Accelerator micro-analysis in general and accelerator mass spectrometry (AMS) in particular.
AMS at the low-ion-energy limit, including alternative positive-ion AMS.
Cosmogenic-radionuclide environment dating.
Biomedical applications of cosmogenic or anthropogenic long-lived radionuclides.
Environmental radioactivity in general including Fukushima and Chernobyl release assessments.
- Small, David, Bentley, Michael J., Freeman, Stewart P.H.T. , Rodes, Angel and Xu, Sheng (2025) A pre-Pliocene origin of the glacial trimline in the Ellsworth Mountains and the prevalence of old landscapes at high elevations in West Antarctica. Geomorphology, 473, 109634. (doi: 10.1016/j.geomorph.2025.109634).
- Garnett, Mark H. , Bryant, Charlotte L., Freeman, Stewart P.H.T. , Gulliver, Pauline and Ascough, Philippa L. (2023) A database of NERC radiocarbon measurements determined by accelerator mass spectrometry. Radiocarbon, (doi: 10.1017/RDC.2023.18) (Early Online Publication).
- Freeman, Stewart P.H.T. , Dunbar, Elaine , Tripney, Brian G. , Ascough, Philippa L. , Fabel, Derek , Gulliver, Pauline , McIntyre, Cameron , Naysmith, Phillip , Shanks, Richard P. and Xu, Sheng (2023) Another 6 years of radiocarbon secondary-standard AMS with two spectrometers. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 535, pp. 267-271. (doi: 10.1016/j.nimb.2022.12.014).
- Corbett, Lee B., Bierman, Paul R., Brown, Thomas A., Caffee, Marc W., Fink, David, Freeman, Stewart P.H.T. , Hidy, Alan J., Rood, Dylan H., Wilcken, Klaus M. and Woodruff, Thomas E. (2022) Clean quartz matters for cosmogenic nuclide analyses: an exploration of the importance of sample purity using the CRONUS-N reference material. Quaternary Geochronology, 73, 101403. (doi: 10.1016/j.quageo.2022.101403).
- Binnie, S.A. et al. (2020) The origins and implications of paleochannels in hyperarid, tectonically active regions: the northern Atacama Desert, Chile. Global and Planetary Change, 185, 103083. (doi: 10.1016/j.gloplacha.2019.103083).
- Shaw, G. et al. (2019) Analysis of 129I and 127I in soils of the Chernobyl Exclusion Zone, 29 years after the deposition of 129I. Science of the Total Environment, 692, pp. 966-974. (doi: 10.1016/j.scitotenv.2019.07.319) (PMID:31540000).
- Binnie, S.A. et al. (2019) Preliminary results of CoQtz-N: a quartz reference material for terrestrial in-situ cosmogenic ¹⁰Be and ²⁶Al measurements. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 456, pp. 203-212. (doi: 10.1016/j.nimb.2019.04.073).
- Mechernich, S. et al. (2019) Carbonate and silicate intercomparison materials for cosmogenic 36Cl measurements. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 455, pp. 250-259. (doi: 10.1016/j.nimb.2019.01.024).
- Marshall, P., Bayliss, A., Farid, S., Tyers, C., Bronk Ramsey, C., Cook, G. , Doğan, T., Freeman, S.P.H.T. , İlkmen, E. and Knowles, T. (2019) 14C wiggle-matching of short tree-ring sequences from post-medieval buildings in England. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 438, pp. 218-226. (doi: 10.1016/j.nimb.2018.03.018).
- Xu, Sheng and Freeman, Stewart P.H.T. (2019) Identification of 129I interferences in accelerator mass spectrometry. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 438, pp. 96-100. (doi: 10.1016/j.nimb.2018.07.014).
- Sugden, David E., Hein, Andrew S., Woodward, John, Marrero, Shasta M., Rodes, Angel , Dunning, Stuart A., Stuart, Finlay M., Freeman, Stewart P.H.T. , Winter, Kate and Westoby, Matthew J. (2018) Corrigendum to “The million-year evolution of the glacial trimline in the southernmost Ellsworth Mountains, Antarctica” [Earth and Planetary Science Letters 469 (2017) 42–52]. Earth and Planetary Science Letters, 502, pp. 291-292. (doi: 10.1016/j.epsl.2018.08.053).
- Chen, Biying, Xu, Sheng, Cook, Gordon T. , Freeman, Stewart P.H.T. , Hou, Xiaolin, Liu, Cong-Qiang, Naysmith, Philip and Yamaguchi, Katsuhiko (2017) Local variance of atmospheric 14C concentrations around Fukushima Dai-ichi Nuclear Power Plant from 2010 to 2012. Journal of Radioanalytical and Nuclear Chemistry, 314(2), pp. 1001-1007. (doi: 10.1007/s10967-017-5459-8) (PMCID:PMC5658471).
- Sugden, David E., Hein, Andrew S., Woodward, John, Marrero, Shasta M., Rodés, Ángel , Dunning, Stuart A., Stuart, Finlay M. , Freeman, Stewart P.H.T. , Winter, Kate and Westoby, Matthew J. (2017) The million-year evolution of the glacial trimline in the southernmost Ellsworth Mountains, Antarctica. Earth and Planetary Science Letters, 469, pp. 42-52. (doi: 10.1016/j.epsl.2017.04.006).
- Rother, Henrik, Stauch, Georg, Loibl, David, Lehmkuhl, Frank and Freeman, Stewart P.H.T. (2017) Late Pleistocene glaciations at Lake Donggi Cona, eastern Kunlun Shan (NE Tibet): early maxima and a diminishing trend of glaciation during the last glacial cycle. Boreas, 46(3), pp. 503-524. (doi: 10.1111/bor.12227).
- Bayliss, A., Marshall, P., Tyers, C., Bronk Ramsey, C., Cook, G. , Freeman, S.P.H.T. and Griffiths, S. (2017) Informing conservation: towards 14C wiggle-matching of short tree-ring sequences from medieval buildings in England. Radiocarbon, 59(3), pp. 985-1007. (doi: 10.1017/RDC.2016.61).
- Linari, Colleen L., Bierman, Paul R., Portenga, Eric W., Pavich, Milan J., Finkel, Robert C. and Freeman, Stewart P.H.T. (2017) Rates of erosion and landscape change along the Blue Ridge escarpment, southern Appalachian Mountains, estimated from in situ cosmogenic 10Be. Earth Surface Processes and Landforms, 42(6), pp. 928-940. (doi: 10.1002/esp.4051).
- Cowie, P.A. et al. (2017) Orogen-scale uplift in the central Italian Apennines drives episodic behaviour of earthquake faults. Scientific Reports, 7, 44858. (doi: 10.1038/srep44858) (PMID:28322311) (PMCID:PMC5359594).
- Bentley, M.J., Hein, A.S., Sugden, D.E., Whitehouse, P.L., Shanks, R. , Xu, S. and Freeman, S.P.H.T. (2017) Deglacial history of the Pensacola Mountains, Antarctica from glacial geomorphology and cosmogenic nuclide surface exposure dating. Quaternary Science Reviews, 158, pp. 58-76. (doi: 10.1016/j.quascirev.2016.09.028).
- Xu, S. et al. (2016) Radiocarbon releases from the 2011 Fukushima nuclear accident. Scientific Reports, 6, 36947. (doi: 10.1038/srep36947) (PMID:27841312) (PMCID:PMC5107918).
- Xu, Sheng, Cook, Gordon T. , Cresswell, Alan J. , Dunbar, Elaine , Freeman, Stewart P.H.T. , Hou, Xiaolin, Kinch, Helen , Naysmith, Philip , Sanderson, David W.C. and Zhang, Luyuan (2016) Carbon, cesium and iodine isotopes in Japanese cedar 1 leaves from Iwaki, Fukushima. Journal of Radioanalytical and Nuclear Chemistry, 310(2), pp. 927-934. (doi: 10.1007/s10967-016-4830-5) (PMID:27746518) (PMCID:PMC5042993).
- Hein, Andrew S., Marrero, Shasta M., Woodward, John, Dunning, Stuart A., Winter, Kate, Westoby, Matthew J., Freeman, Stewart P. H. T. , Shanks, Richard P. and Sugden, David E. (2016) Mid-Holocene pulse of thinning in the Weddell Sea sector of the West Antarctic ice sheet. Nature Communications, 7, 12511. (doi: 10.1038/ncomms12511) (PMID:27545202) (PMCID:PMC4996935).
- Xu, S. et al. (2016) 14C levels in the vicinity of the Fukushima Dai-ichi Nuclear Power Plant prior to the 2011 accident. Journal of Environmental Radioactivity, 157, pp. 90-96. (doi: 10.1016/j.jenvrad.2016.03.013) (PMID:27023156).
- Xu, Sheng, Zhang, Luyuan, Freeman, Stewart P.H.T. , Hou, Xiaolin, Watanabe, Akira, Sanderson, David C.W. , Cresswell, Alan and Yamaguchi, Katsuhiko (2016) Iodine isotopes in precipitation: Four-year time series variations before and after 2011 Fukushima nuclear accident. Journal of Environmental Radioactivity, 155-56, pp. 38-45. (doi: 10.1016/j.jenvrad.2016.02.011) (PMID:26913975).
- Hein, Andrew S., Woodward, John, Marrero, Shasta M., Dunning, Stuart A., Steig, Eric J., Freeman, Stewart P.H.T. , Stuart, Finlay M. , Winter, Kate, Westoby, Matthew J. and Sugden, David E. (2016) Evidence for the stability of the West Antarctic Ice Sheet divide for 1.4 million years. Nature Communications, 7, 10325. (doi: 10.1038/ncomms10325) (PMID:26838462) (PMCID:PMC4742792).
- Xu, Sheng, Zhang, Luyuan, Freeman, Stewart P.H.T. , Hou, Xiaolin, Yamaguchi, Katsuhiko, Cresswell, Alan J. and Sanderson, David C.W. (2016) 129I and 137Cs in groundwater in the vicinity of Fukushima Dai-ichi nuclear power plant. Geochemical Journal, 50(3), pp. 287-291. (doi: 10.2343/geochemj.2.0414).
- Freeman, Stewart P.H.T. , Shanks, Richard P. , Donzel, Xavier and Gaubert, Gabriel (2015) Radiocarbon positive-ion mass spectrometry. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, pp. 229-232. (doi: 10.1016/j.nimb.2015.04.034).
- Shanks, Richard P. , Ascough, Philippa L. , Dougans, Andrew, Gallacher, Paul, Gulliver, Pauline , Rood, Dylan H., Xu, Sheng and Freeman, Stewart P.H.T. (2015) Performance of the rebuilt SUERC single-stage accelerator mass spectrometer. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, pp. 76-79. (doi: 10.1016/j.nimb.2015.07.122).
- Shanks, Richard P. and Freeman, Stewart P.H.T. (2015) 160keV 26Al-AMS with a single-stage accelerator mass spectrometer. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, pp. 307-310. (doi: 10.1016/j.nimb.2015.07.121).
- Shanks, Richard P. and Freeman, Stewart P.H.T. (2015) Sputter-pits casting to measure AMS sample consumption. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, pp. 168-172. (doi: 10.1016/j.nimb.2015.03.060).
- Xu, Sheng, Freeman, Stewart P.H.T. , Rood, Dylan H. and Shanks, Richard P. (2015) Decadal 10Be, 26Al and 36Cl QA measurements on the SUERC 5MV accelerator mass spectrometer. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 361, pp. 39-42. (doi: 10.1016/j.nimb.2015.03.064).
- Xu, Sheng, Cook, Gordon T. , Cresswell, Alan J. , Dunbar, Elaine , Freeman, Stewart P.H.T. , Hastie, Helen, Hou, Xiaolin, Jacobsson, Piotr , Naysmith, Philip and Sanderson, David C.W. (2015) Radiocarbon concentration in modern tree rings from Fukushima, Japan. Journal of Environmental Radioactivity, 146, pp. 67-72. (doi: 10.1016/j.jenvrad.2015.04.004) (PMID:25917022).
- Tranel, Lisa M., Spotila, James A., Binnie, Steven A. and Freeman, Stewart P.H.T. (2015) Quantifying variable erosion rates to understand the coupling of surface processes in the Teton Range, Wyoming. Geomorphology, 228, pp. 409-420. (doi: 10.1016/j.geomorph.2014.08.018).
- Xu, Sheng, Zhang, Luyuan, Freeman, Stewart P.H.T. , Hou, Xiaolin, Shibata, Yasuyuki, Sanderson, David , Cresswell, Alan , Doi, Taeko and Tanaka, Atsushi (2015) Speciation of radiocesium and radioiodine in Aarosols from Tsukuba after the Fukushima nuclear accident. Environmental Science and Technology, 49(2), pp. 1017-1024. (doi: 10.1021/es504431w).
- Duxbury, J., Bierman, P. R., Portenga, E. W., Pavich, M. J., Southworth, S. and Freeman, Stewart P.H.T. (2015) Erosion rates in and around Shenandoah National Park, Virginia, determined using analysis of cosmogenic 10Be. American Journal of Science, 315(1), pp. 46-76. (doi: 10.2475/01.2015.02).
- Xu, Sheng, Freeman, Stewart P.H.T. , Rood, Dylan H. and Shanks, Richard P. (2014) 26Al interferences in accelerator mass spectrometry measurements. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 333, pp. 42-45. (doi: 10.1016/j.nimb.2014.04.009).
- Xu, Sheng, Freeman, Stewart P.H.T. , Hou, Xiaolin, Watanabe, Akira, Yamaguchi, Katsuhiko and Zhang, Luyuan (2013) Iodine isotopes in precipitation: temporal responses to 129I emissions from the Fukushima nuclear accident. Environmental Science and Technology, 47(19), pp. 10851-10859. (doi: 10.1021/es401527q).
- Xu, Sheng, Liu, Cong Qiang, Freeman, Stewart , Lang, Yun Chao, Schnabel, Christoph, Tu, Cheng Long, Wilcken, Klaus and Zhao, Zhi Qi (2013) In-situ cosmogenic 36Cl denudation rates of carbonates in Guizhou karst area. Chinese Science Bulletin, 58(20), pp. 2473-2479. (doi: 10.1007/S11434-013-5756-8).
- Wilcken, K.M., Freeman, S.P.H.T. , Schnabel, C., Binnie, S.A., Xu, S. and Phillips, R. (2013) 36Cl accelerator mass spectrometry with a bespoke instrument. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 294, pp. 107-114. (doi: 10.1016/j.nimb.2012.04.027).
- Wilcken, K.M., Freeman, S.P.H.T. , Xu, S. and Dougans, A. (2013) Single-stage accelerator mass spectrometer radiocarbon-interference identification and positive-ionisation characterisation. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 294, pp. 353-355. (doi: 10.1016/j.nimb.2012.03.034).
- Xu, S., Freeman, S.P.H.T. , Sanderson, D. , Shanks, R. and Wilcken, K.M. (2013) Cl can interfere with Al3+ AMS but B need not matter to Be measurement. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 294, pp. 403-405. (doi: 10.1016/j.nimb.2012.01.045).
- Xu, Sheng, Hoshizumi, Hideo, Uto, Kozo and Freeman, Stewart P.H.T. (2013) Radiocarbon dating of Fugendake Volcano in Unzen, SW Japan. Radiocarbon, 55(2-3), pp. 1850-1861. (doi: 10.2458/azu_js_rc.55.16207).
- Merchel, S. et al. (2012) Quality assurance in accelerator mass spectrometry: results from an international round-robin exercise for 10Be. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 289, pp. 68-73. (doi: 10.1016/j.nimb.2012.07.038).
- Cook, G.T. , Higham, T.F.G., Naysmith, P. , Brock, F., Freeman, S.P.F.T. and Bayliss, A. (2012) Assessment of infinite-age bones from the upper Thames Valley, UK, as 14C background standards. Radiocarbon, 54(3-4), pp. 845-853. (doi: 10.2458/azu_js_rc.v54i3–4.16161).
- Cortés-Aranda, J., González L., G., Binnie, S. A., Robinson, R., Freeman, S.P.H.T. and Vargas E., G. (2012) Paleoseismology of the Mejillones Fault, northern Chile: Insights from cosmogenic 10Be and optically stimulated luminescence determinations. Tectonics, 31(2), TC2017. (doi: 10.1029/2011TC002877).
- Bentley, Michael J., Sugden, David E., Fogwill, Christopher J., Le Brocq, Anne M., Hubbard, Alun L., Dunai, Tibor J. and Freeman, Stewart P. H. T. (2011) Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: Constraints on past ice volume change: REPLY. Geology, 39(5), e240. (doi: 10.1130/g32140y.1).
- Bentley, M.J., Johnson, J.S., Hodgson, D.A., Dunai, T., Freeman, S.P.H.T. and O Cofaigh, C. (2011) Rapid deglaciation of Marguerite Bay, western Antarctic Peninsula in the Early Holocene. Quaternary Science Reviews, 30(23-24), pp. 3338-3349. (doi: 10.1016/j.quascirev.2011.09.002).
- Johnson, J.S., Bentley, M.J., Roberts, S.J., Binnie, S.A. and Freeman, S.P.H.T. (2011) Holocene deglacial history of the north east Antarctic Peninsula - a review and new chronological constraints. Quaternary Science Reviews, 30, pp. 3791-3802. (doi: 10.1016/j.quascirev.2011.10.011).
- Kong, P., Na, C., Brown, R. , Fabel, D. , Freeman, S. , Xiao, W. and Wang, Y. (2011) Cosmogenic 10Be and 26Al dating of paleolake shorelines in Tibet. Journal of Asian Earth Sciences, 41(3), pp. 263-273. (doi: 10.1016/j.jseaes.2011.02.016).
- Merchel, S. et al. (2011) Ultra-trace analysis of 36Cl by accelerator mass spectrometry: an interlaboratory study. Analytical and Bioanalytical Chemistry, 400(9), pp. 3125-3132. (doi: 10.1007/s00216-011-4979-2).
- Naysmith, P. et al. (2010) 14C AMS at SUERC: improving QA data from the 5 MV tandem AMS and 250 kV SSAMS. Radiocarbon, 52(2), pp. 263-271. (doi: 10.1017/S003382220004529X).
- Bentley, M.J., Fogwill, C.J., Le Brocq, A.M., Hubbard, A.L., Sugden, D.E., Dunai, T. and Freeman, S. (2010) Deglacial history of the West Antarctic Ice Sheet in the Weddell Sea embayment: Constraints on past ice volume change. Geology, 38(5), pp. 411-414. (doi: 10.1130/G30754.1).
- Fabel, D. , Small, D., Miguens-Rodriguez, M. and Freeman, S. (2010) Cosmogenic nuclide exposure ages from the 'Parallel Roads' of Glen Roy, Scotland. Journal of Quaternary Science, 25(4), pp. 597-603. (doi: 10.1002/jqs.1318).
- Freeman, S.P.H.T. , Cook, G.T. , Dougans, A.B., Naysmith, P. , Wilcken, K.M. and Xu, S. (2010) Improved SSAMS performance. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268(7-8), pp. 715-717. (doi: 10.1016/j.nimb.2009.10.012).
- Wilcken, K., Freeman, S. , Dougans, A., Xu, S., Galbiati, A. and Oliver, K. (2010) Carbon carbon detection: diamond detectors and AMS. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268(7-8), pp. 851-853. (doi: 10.1016/j.nimb.2009.10.047).
- Wilcken, K., Freeman, S. , Dougans, A., Xu, S., Loger, R. and Schnabel, C. (2010) Improved 36Cl AMS at 5MV. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268(7-8), pp. 748-751. (doi: 10.1016/j.nimb.2009.10.021).
- Wilcken, K., Freeman, S. , Xu, S. and Dougans, A. (2010) Attempted positive ion radiocarbon AMS. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268(7-8), pp. 712-714. (doi: 10.1016/j.nimb.2009.10.011).
- Xu, S., Dougans, A.B., Freeman, S.P.H.T. , Schnabel, C. and Wilcken, K.M. (2010) Improved 10Be and 26Al AMS with a 5 MV spectrometer. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268(7-8), pp. 736-738. (doi: 10.1016/j.nimb.2009.10.018).
- Schulze-Konig, T., Maden, C., Denk, E., Freeman, S. , Stocker, M., Suter, M., Synal, H.A. and Walczyk, T. (2010) Comparison of 41Ca analysis on 0.5 MV and 5 MV-AMS systems. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268, pp. 752-755. (doi: 10.1016/j.nimb.2009.10.022).
- Johnsen, T.F., Alexanderson, H., Fabel, D. and Freeman, S. (2009) New 10Be cosmogenic ages from the Vimmerby moraine confirm the timing of Scandinavian ice sheet deglaciation in southern Sweden. Geografiska Annaler. Series A: Physical Geography, 91(2), pp. 113-120. (doi: 10.1111/j.1468-0459.2009.00358.x).
- Clark, J., McCabe, A.M., Schnabel, C., Clark, P.U., Freeman, S.P.H.T. , Maden, C. and Xu, S. (2009) 10Be chronology of the last deglaciation of County Donegal, northwestern Ireland. Boreas, 38(1), pp. 111-118. (doi: 10.1111/j.1502-3885.2008.00040.x).
- Clark, J., McCabe, A.M., Schnabel, C., Clark, P.U., McCarron, S., Freeman, S.P.H.T. , Maden, C. and Xu, S. (2009) Cosmogenic 10Be chronology of the last deglaciation of western Ireland, and implications for sensitivity of the Irish Ice Sheet to climate change. Geological Society of America Bulletin, 121(1-2), pp. 3-16. (doi: 10.1130/B26288.1).
- Mathews, J.A., Shakesby, R.A., Schnabel, C. and Freeman, S.P.H.T. (2008) Cosmogenic 10Be and 26Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event (c. 10 ka) at its type-site. Holocene, 18(8), pp. 1155-1164. (doi: 10.1177/0959683608096585).
- Merchel, S., Arnold, M., Aumaître, G., Benedetti, L., Bourlès, D.L., Braucher, R., Alfimov, V., Freeman, S.P.H.T. , Steier, P. and Wallner, A. (2008) Towards more precise 10Be and 36Cl data from measurements at the 10-14 level: influence of sample preparation. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 266(22), pp. 4921-4926. (doi: 10.1016/j.nimb.2008.07.031).
- Roberts, D.H., Long, A.J., Schnabel, C., Freeman, S.P.H.T. and Simpson, M.J.R. (2008) The deglacial history of southeast sector of the Greenland Ice Sheet during the Last Glacial Maximum. Quaternary Science Reviews, 27(15-16), pp. 1505-1516. (doi: 10.1016/j.quascirev.2008.04.008).
- Freeman, S.P.H.T. , Dougans, A., McHargue, L., Wilcken, K.M. and Xu, S. (2008) Performance of the new single stage accelerator mass spectrometer at the SUERC. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 266(10), pp. 2225-2228. (doi: 10.1016/j.nimb.2008.02.085).
- Wilcken, K.M., Freeman, S.P.H.T. , Xu, S. and Dougans, A. (2008) Positive ion AMS with single stage accelerator and RF-plasma ion source at SUERC. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 266(10), pp. 2229-2232. (doi: 10.1016/j.nimb.2008.03.067).
- Kaplan, M.R., Fogwill, C.J., Sugden, D.E., Hulton, N.R.J., Kubik, P.W. and Freeman, S.P.H.T. (2008) Southern Patagonian glacial chronology for the Last Glacial period and implications for Southern Ocean climate. Quaternary Science Reviews, 27(3-4), pp. 284-294. (doi: 10.1016/j.quascirev.2007.09.013).
- Phillips, W.M., Hall, A.M., Ballantyne, C.K., Binnie, S., Kubik, P.K. and Freeman, S.P.H.T. (2008) Extent of the last ice sheet in northern Scotland tested with cosmogenic 10Be exposure ages. Journal of Quaternary Science, 23(2), pp. 101-107. (doi: 10.1002/jqs.1161).
- Codilean, A.T., Bishop, P., Stuart, F.M., Hoey, T.B. , Fabel, D. and Freeman, S.P.H.T. (2008) Single-grain cosmogenic 21Ne concentrations in fluvial sediments reveal spatially variable erosion rates. Geology, 36(2), pp. 159-162. (doi: 10.1130/G24360A.1).
- Golledge, Nicholas R., Fabel, Derek , Everest, Jeremy D., Freeman, Stewart and Binnie, Steven (2007) First cosmogenic10Be age constraint on the timing of Younger Dryas glaciation and ice cap thickness, western Scottish Highlands. Journal of Quaternary Science, 22(8), pp. 785-791. (doi: 10.1002/jqs.1113).
- Jull, A. J. T. et al. (2007) 3He,20,21,22Ne,14C,10Be,26Al, and36Cl in magnetic fractions of cosmic dust from Greenland and Antarctica. Meteoritics and Planetary Science, 42(10), pp. 1831-1840. (doi: 10.1111/j.1945-5100.2007.tb00541.x).
- Kaplan, M.R., Coronato, A., Hulton, N.R.J., Rabassa, J.O., Kubik, P.W. and Freeman, S.P.H.T. (2007) Cosmogenic nuclide measurements in southernmost South America and implications for landscape change. Geomorphology, 87(4), pp. 284-301. (doi: 10.1016/j.geomorph.2006.10.005).
- Freeman, S. et al. (2007) The SUERC AMS laboratory after 3 years. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 259(1), pp. 66-70. (doi: 10.1016/j.nimb.2007.01.312).
- Maden, C., Anastasi, P.A.F., Dougans, A., Freeman, S.P.H.T. , Kitchen, R., Klody, G., Schnabel, C., Sundquist, M., Vanner, K. and Xu, S. (2007) SUERC AMS ion detection. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 259(1), pp. 131-139. (doi: 10.1016/j.nimb.2007.01.151).
- Schnabel, C., Reinhardt, L., Barrows, T.T., Bishop, P., Davidson, A., Fifield, L.K., Freeman, S. , Kim, J.Y., Maden, C, and Xu, S, (2007) Inter-comparison in 10Be analysis starting from pre-purified quartz. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 259(1), pp. 571-575. (doi: 10.1016/j.nimb.2007.01.298).
- Xu, Sheng, Dougans, Andrew, Freeman, Stewart P.H.T. , Maden, Colin and Loger, Roger (2007) A gas ion source for radiocarbon measurement at SUERC. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 259(1), pp. 76-82. (doi: 10.1016/j.nimb.2007.01.311).
- Atarashi-Andoh, M. et al. (2007) 129I/127I ratios in surface waters of the English Lake District. Applied Geochemistry, 22(3), pp. 628-636. (doi: 10.1016/j.apgeochem.2006.12.008).
- Schnabel, C. et al. (2007) 129I/127I ratios in Scottish coastal surface sea water: geographical and temporal responses to changing emissions. Applied Geochemistry, 22(3), pp. 619-627. (doi: 10.1016/j.apgeochem.2006.12.007).
- Ertunc, Tanya, Xu, Sheng, Bryant, Charlotte L., Currie, Margaret, Freeman, Stewart T. , Maden, Colin and Murray, Callum (2007) Investigation into background levels of small organic samples at the NERC Radiocarbon Laboratory. Radiocarbon, 49(2), pp. 271-280..
- Kong, P., Fabel, D. , Brown, R. and Freeman, S. (2007) Cosmic-ray exposure age of Martian meteorite GRV 99027. Science in China Series D-Earth Sciences, 50, pp. 1521-1524. (doi: 10.1007/s11430-007-0089-6).
- Marshall, WA, Gehrels, WR, Garnett, MH, Freeman, SPHT , Maden, C and Xu, S (2007) The use of 'bomb spike' calibration and high-precision AMS C-14 analyses to date salt-marsh sediments deposited during the past three centuries. Quaternary Research, 68, pp. 325-337. (doi: 10.1016/j.yqres.2007.07.005).
- Naysmith, P. , Scott, E.M. , Cook, G.T., Heinemeier, J.., van der Plicht, J., Van Strydonck, M., Ramsey, C.B., Grootes, P.M. and Freeman, S.P.H.T. (2007) A cremated bone intercomparison study. Radiocarbon, 49(2), pp. 403-408. (doi: 10.1017/S0033822200042338).
- Prudncio, M. I., Marques, R., Rebelo, L., Cook, G. T. , Cardoso, G. O., Naysmith, P. , Freeman, S. T. , Franco, D. and Brito, P. (2007) Radiocarbon and blue optically stimulated luminescence chronologies of the Oitavos consolidated dune (Western Portugal). Radiocarbon, 49(2), pp. 1145-1151..
- Ascough, P.L., Cook, G.T., Dugmore, A.J., Scott, E.M. and Freeman, S.P.H.T. (2005) Influence of mollusk species on marine DELTA R determinations. Radiocarbon, 47(3), pp. 433-440..
- Ertunc, Tanya, Xu, Sheng, Bryant, Charlotte L., Maden, Colin, Murray, Callum , Currie, Margaret and Freeman, Stewart T. (2005) Progress in AMS target production in sub-milligram samples at the NERC Radiocarbon Laboratory. Radiocarbon, 47(3), pp. 453-464..
- Freeman, S. et al. (2004) Initial measurements with the SUERC accelerator mass spectrometer. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 223-24, pp. 195-198. (doi: 10.1016/j.nimb.2004.04.040).
- Freeman, S., Bishop, P., Bryant, C., Cook, G., Fallick, A.E., Harkness, D., Metcalfe, S., Scott, M., Scott, R. and Summerfield, M. (2004) A new environmental sciences AMS laboratory in Scotland. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 223-24, pp. 31-34. (doi: 10.1016/j.nimb.2004.04.010).
- Xu, S., Anderson, R., Bryant, C., Cook, G.T. , Dougans, A., Freeman, S. , Naysmith, P. , Schnabel, C. and Scott, E.M. (2004) Capabilities of the new suerc 5MV AMS facility for C-14 dating. Radiocarbon, 46(1), pp. 59-64. (doi: 10.1017/S0033822200039357).
- Buchholz, Bruce A., Freeman, Stewart P.H.T. , Haack, Kurt W. and Vogel, John S. (2000) Tips and traps in the 14C bio-AMS preparation laboratory. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 172(1-4), pp. 404-408. (doi: 10.1016/S0168-583X(00)00142-7).
- Freeman, S.P.H.T. , Beck, B., Bierman, J.M., Caffee, M.W., Heaney, R.P., Holloway, L., Marcus, R., Southon, J.R. and Vogel, J.S. (2000) The study of skeletal calcium metabolism with Ca-41 and Ca-45. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 172, pp. 930-933. (doi: 10.1016/S0168-583X(00)00341-4).
- Mani, Chitra, Freeman, Stewart , Nelson, David O., Vogel, John S. and Turteltaub, Kenneth W. (1999) Species and strain comparisons in the macromolecular binding of extremely low doses of [14C]benzene in rodents, using accelerator mass spectrometry. Toxicology and Applied Pharmacology, 159(2), pp. 83-90. (doi: 10.1006/taap.1999.8707) (PMID:10495771).
- Mauthe, Robert J., Dingley, Karen H., Leveson, Steven H., Freeman, Stewart P.H.T. , Turesky, Robert J., Garner, R. Colin and Turteltaub, Kenneth W. (1999) Comparison of DNA-adduct and tissue-available dose levels of MeIQx in human and rodent colon following administration of a very low dose. International Journal of Cancer, 80(4), pp. 539-545. (doi: 10.1002/(SICI)1097-0215(19990209)80:4<539::AID-IJC10>3.0.CO;2-C) (PMID:9935154).
- Dingley, Karen H., Freeman, S.P.H.T. , Nelson, David O., Garner, R Colin. and Turteltaub, Kenneth W. (1998) Covalent binding of 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline to albumin and hemoglobin at environmentally relevant doses. Comparison of human subjects and F344 rats. Drug Metabolism and Disposition, 26(8), pp. 825-8. (PMID:9698300).
- Mauthe, R.J., Snyderwine, E.G., Ghoshal, A., Freeman, S.P. and Turteltaub, K.W. (1998) Distribution and metabolism of 2-amino-1-methyl-6-phenylimidazo[4,5- b]pyridine (PhIP) in female rats and their pups at dietary doses. Carcinogenesis, 19(5), pp. 919-924. (doi: 10.1093/carcin/19.5.919) (PMID:9635883).
- Gilman, S. Douglass, Gee, Shirley J., Hammock, Bruce D., Vogel, John S., Haack, Kurt, Buchholz, Bruce A., Freeman, Stewart P.H.T. , Wester, Ronald C., Hui, Xiaoying and Maibach, Howard I. (1998) Analytical performance of accelerator mass spectrometry and liquid scintillation counting for detection of 14C-labeled atrazine metabolites in human urine. Analytical Chemistry, 70(16), pp. 3463-3469. (doi: 10.1021/ac971383v) (PMID:9726169).
- Kaye, Barry, Garner, R. Colin, Mauthe, Robert J., Freeman, Stewart P.H.T. and Turteltaub, Kenneth W. (1997) A preliminary evaluation of accelerator mass spectrometry in the biomedical field. Journal of Pharmaceutical and Biomedical Analysis, 16(3), pp. 541-543. (doi: 10.1016/S0731-7085(97)00104-0).
- Bench, G., Freeman, S. , Roberts, M. and Sideras-Haddad, E. (1997) The bioscience nuclear microscopy program at LLNL. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 130(1-4), pp. 419-425. (doi: 10.1016/S0168-583X(97)00235-8).
- Freeman, Stewart P.H.T. , King, Janet C., Vieira, Nancy E., Woodhouse, Leslie R. and Yergey, Alfred L. (1997) Human calcium metabolism including bone resorption measured with 41Ca tracer. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 123(1-4), pp. 266-270. (doi: 10.1016/S0168-583X(96)00701-X).
- Roberts, M.L. et al. (1997) The LLNL AMS facility. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 123(1-4), pp. 57-61. (doi: 10.1016/S0168-583X(96)00426-0).
- Vogel, John S., McAninch, Jeffrey and Freeman, Stewart P.H.T. (1997) Elements in biological AMS. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 123(1-4), pp. 241-244. (doi: 10.1016/S0168-583X(96)00679-9).
- Freeman, Stewart P.H.T. and Vogel, John S. (1995) Biomedical accelerator mass spectrometry. International Journal of Mass Spectrometry and Ion Processes, 143, pp. 247-256. (doi: 10.1016/0168-1176(95)04157-G).
- Freeman, S.P.H.T. , Serfass, R.E., King, J.C., Southon, J.R., Fang, Y., Woodhouse, L.R., Bench, G.S. and McAninch, J.E. (1995) Biological sample preparation and 41Ca AMS measurement at LLNL. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 99(1-4), pp. 557-561. (doi: 10.1016/0168-583X(95)00342-8).
- McAninch, J.E., Bench, G.S., Freeman, S.P.H.T. , Roberts, M.L., Southon, J.R., Vogel, J.S. and Proctor, I.D. (1995) PXAMS — projectile X-ray AMS: X-ray yields and applications. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 99(1-4), pp. 541-545. (doi: 10.1016/0168-583X(94)00633-4).
- Morse, D.H., Bench, G.S., Freeman, S.P.H.T. and Pontau, A.E. (1995) Microbeam PIXE analysis using wavelength dispersive spectrometry. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 99(1-4), pp. 427-430. (doi: 10.1016/0168-583X(94)00636-9).
- Freeman, S.P.H.T. , Ramsey, C. Bronk and Hedges, R.E.M. (1994) Imaging AMS. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 92(1-4), pp. 231-236. (doi: 10.1016/0168-583X(94)96011-9).
- Freeman, S.P.H.T. (1993) Imaging SIMS with an accelerator (and biomedical applications). Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 79(1-4), pp. 627-630. (doi: 10.1016/0168-583X(93)95429-9).
- Freeman, S.P.H.T. , Bronk, C.R. and Hedges, R.E.M. (1990) The design of a radiocarbon muprobe for tracer mapping in biological specimens. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 52(3-4), pp. 405-409. (doi: 10.1016/0168-583X(90)90446-2).
- Bryant, C.L. et al. (2013) Pre-Treatment Procedures and Quality Control at the NERC Radiocarbon Facility-East Kilbride. 21st International Radiocarbon Conference, Paris, France, 09-13 Jul 2012..
- TRansfer - Exposure - Effects (TREE): Integrating the science needed to underpin radioactivity assessments for humans and wildlife.. NERC RATE grant. 3% of £2.5M, 2013-2018.
- BRITICE-CHRONO (British-Irish Ice Sheet reconstruction).. ERC consortium grant. 6% of £2.7M, 2012-2017.
- Earthquake hazard from 36Cl exposure dating of elapsed time and Coulomb stress transfer.. NERC standard grant. 15% of £709k, 2012-2015.
- A new approach to West Antarctic Ice Sheet evolution using blue-ice moraines on nunataks.. NERC standard grant. 16% of £558k, 2012-2015.
- Thinning history of the Foundation-Thiel Trough Ice Stream: a key control on deglaciation of the West Antarctic Ice Sheet, Weddell Sea embayment.. NERC Antarctic Funding Initiative grant. 15% of £394k, 2009-2013.
