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Nuclear Instruments & Methods in Physics Research, Section B: Beam Interactions With Materials and Atoms 1997: Vol 123 Table of Contents PDF

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Preview Nuclear Instruments & Methods in Physics Research, Section B: Beam Interactions With Materials and Atoms 1997: Vol 123 Table of Contents

Nuclear Instruments and Methods in Physics Research B 123 (1997) xiii—xix NIM B Beam interactions with Materi&a Altosms Contents Ne ob COOP SS Se Ss SOSH Ses Fee SES 6 on eo CROC TOT AVE eae Vii DEE cece earicvooeseesehc seweesp ceece etr ecee eeeeert s ix EG So 6 66 60 6 46 866 h 66 OKC OOO SOHO EES OROCECROCECEDESE OEERS OE OSS Xx Section I. In Memory of Linas Kilius Linas Rimgaudas Kilius (1949-1996) Fi, GEE Seether ebenecece c CMW eWES HMM Ck c Hebe ede bon ots l Ion source design criteria for AMS L.R. Kilius, W.E. Kieser, A.E. Litherland, X.-L. Zhao, J.C. Rucklidge and R.P. Beukens ........ 5 Molecular fragment problems in heavy element AMS LR. Kilius, X.-L. Zhao, A.B. Lithesiand and UB. Purser... wc ccc ccc cece cree sec ecens 10 Neutral injection for AMS ee OP LC RERE REE RELEE ELS CETL TLE ee i8 Section II. Reports from new AMS Facilities The Leibniz-Labor AMS facility at the Christian-Albrechts University, Kiel, Germany M.-J. Nadeau, M. Schleicher, P.M. Grootes, H. Erlenkeuser, A. Gottdang, D.J.W. Mous, J.M. ea Ses £6 5 65.85 FE ee COO 6 EEO AS 6 PCTSSS WES SS 22 The AMS facility at the National Institute for Environmental Studies (NIES), Japan H. Kume, Y. Shibata, A. Tanaka, M. Yoneda, Y. Kumamoto, T. Uehiro and M. Morita ......... 31 Brazilian accelerator mass spectrometry program G.M. Santos, J.C. Acquadro, R.M. Anjos, P.R.S. Gomes, C. Tenreiro, R. Liguori Neto, M.M. Coimbra, C.R. Appoloni, A.M.M. Maciel, N.H. Medina, M.A. Rizzuto and N. Carlin Filho. ...... 34 The AMS program at the TANDAR accelerator D.E. Alvarez, J.O.F. Niello, M. di Tada, A.M.J. Ferrero, G.V. Marti, O.A. Capurro, A.J. Pacheco, J.E. Testoni, D. Abriola, A. Etchegoyen, E. Achterberg and M. Ramirez .............2.206- 39 Accelerator mass spectrometry at the Kyoto University tandem accelerator M. Nakamura, Y. Tazawa, H. Matsumoto, M. Hirose, K. Ogino, M. Kohno and J. Funaba........ 43 VERA: A new AMS facility in Vienna W. Kutschera, P. Collon, H. Friedmann, R. Golser, P. Hille, A. Priller, W. Rom, P. Steier, S. ‘Wena, A. Wee, TE, Creme GG, WHR bi Ue he eee ere eC eee 47 Section III. Reports from existing AMS Facilities Status of the NSF-Arizona AMS laboratory D.J. Donahue, J.W. Beck, D. Biddulph, G.S. Burr, C. Courtney, P.E. Damon, A.L. Hatheway, L. Hewitt, A.J.T. Jull, T. Lange, N. Lifton, R. Maddock, L.R. McHargue, J.M. O’Malley and L.J. ES TTT ETL CEE OORT LUT TTT OTC ULLCTTTT TCT eT Te 51 The LLNL AMS facility M.L. Roberts, G.S. Bench, T.A. Brown, M.W. Caffee, R.C. Finkel, S.P.H.T. Freeman, L.J. Hainsworth, M. Kashgarian, J.E. McAninch, I.D. Proctor, J.R. Southon and J.S. Vogel.......... 57 Status report of the PSI/ETH AMS facility H.-A. Synal, G. Bonani, M. Débeli, R.M. Ender, P. Gartenmann, P.W. Kubik, Ch. Schnabel and M. PSUs oN SCUSU SUSU UTE CGES DEREC CEH EEOC ESSEC UR OTERO COCO TORSO ESOC 62 0168-/5978 /3$17X.0 0 © 1997 Elsevier Science B.V. All rights reserved xiv Contents Status and plans for the PRIME Lab AMS facility D. Elmore, X. Ma, T. Miller, K. Mueller, M. Perry, F. Rickey, P. Sharma, P. Simms, M. Lipschutz | S, PPPEPTECCETTEL CTE EETC ESCE E PERRT EEEECOEET 69 Research and measurement program at the ANTARES AMS facility C. Tuniz, D. Fink, M.A.C. Hotchkis, G.E. Jacobsen, E.M. Lawson, A.M. Smith and Q. Hua ...... 73 Development plans for the AMS facility at the Institute of Geological and Nuclear Sciences, New Zealand PT TTT CORRE ETTCTTTT TTC TECU TET 79 Improvements to the PKUAMS injection system Lu Xiangyang, Li Kun, Zhao Qiang, Li Bin, Liu Kexin, Guo Zhiyu, Wang Jianjun and Yuan Jinglin . 84 The Groningen AMS tandetron eK TTT eee ee TT Te Tee TTC TERT ET TL TT TL 87 The Erlangen AMS facility: status report and research program W. Kretschmer, G. Anton, M. Bergmann, E. Finckh, B. Kowalzik, M. Klein, M. Leigart, S. Merz, G. DEorgemsoth and 1. PIUNQRT. ww ccc ccc ccc cece eee ce re eeseeseceseseseseees 93 Precision and mass fractionation in '“C analysis with AMS K. van der Borg, C. Alderliesten, A.F.M. de Jong, A. van den Brink, A.P. de Haas, HJ.H. Kerse- PST OCR TTETTLT TTEU ETOETEEC 97 Status of the SINR mini-cyclotron AMS facility M. Chen, X. Lu, G. Chen, S. Xu, L. Shen, D. Li, Y. Zhang, P. Gong, Y. Zhang and W. Zhou ..... 102 Current status of the AMS system at the University of Tokyo K. Kobayashi, S. Hatori, H. Nagai, K. Yoshida, M. Imamura, H. Matsuzaki, M. Murayama, M. Sakamoto, Y. Aramaki, M. Tanikawa, S. Shibata, H. Ohashi, U. Zoppi, C. Nakano, Y. Sunohara and pA —«_s PPUVTEETE TILL Ter TT Tree Te 107 Section IV. New instrumentation, methods and applications Microbeam AMS: prospects of new geological applications Fe PRPS ECCT TO CTT CCC CTT TTT CCC EL 112 Measurement of *'Kr in the atmosphere P. Collon, T. Antaya, B. Davids, M. Fauerbach, R. Harkewicz, M. Hellstrom, W. Kutschera, D. Morrissey, R. Pardo, M. Paul, B. Sherrill and M. Steiner... 2... 2... ee ee ee ee ee eee eee 122 AMS at the Munich gas-filled analyzing magnet system GAMS io Be Ch . . . ccc ccoeeee ee ee sekes en ewreees ees 128 Fe measurements with an EN tandem accelerator P. Gartenmann, C. Schnabel, M. Suter and H.-A. Synal. . 2... ee eee ee ee ee es 132 Measurement of ©N i and ~Ni by accelerator mass spectrometry using characteristic projectile X-rays J.E. McAninch, L.J. Hainsworth, A.A. Marchetti, M.R. Leivers, P.R. Jones, A.E. Dunlop, R. Mauthe, 5S. Vogel, LD. Proctor and T. Straume .. wc ccc ccc ccc cree creer eceeeeeeeee 137 The Chalk River AMS time-of-flight detection system V.T. Koslowsky, H.R. Andrews, W.G. Davies and K. Murnaghan .........---2+++++eee8- 144 AMS of '*C at low energies 8 ES rr er rs re er ee ar 148 Design of a compact | MV AMS system for biomedical research B.J. Hughey, R.E. Klinkowstein, R.E. Shefer, P.L. Skipper, S.R. Tannenbaum and J.S. Wishnok.... 153 A compact 4c Isotope Ratio Mass Spectrometer for biomedical applications D.J.W. Mous, K.H. Purser, W. Fokker, R. van den Broek and R.B. Koopmans ........-+++-- 159 The novel HVEE multi-element AMS system Fis CI GE TAB, BOs 3 occa ceed cee scrcecenceseeowscenesevenees 163 AMS detection of chlorine-36 using small tandems EEE > eb 06 65 664606666606 6554056686 6 00:6 685 b OOO RN SO RKE EES OO POS 167 New detector concepts for AMS R. Golser, H. Friedmann, A. Priller, P. Steier, W. Kutschera, O. Benka and E. Steinbauer........ 170 Contents XV Development of a gas AE-position sensitive E detector for AMS studies N. Funaya, T. Baba, N. Miyazaki, T. Takahashi, T. Kaikura, R. Seki, K. Furuno, S. Jiang and Y. Nagashima 2282.94 @ ee 6 O82 2.68 2:3 6:28 2 2. 2 Fs Ce 6 a2 6 6 8 ¢- 6 6.6.8 C66 eee 8 6 6. 62D Ce &€ O24 @ 2 @ Reducing the magnet switching time for AMS at PRIME Lab M. Perry, D. Elmore, F. Rickey, B. Bhukhanwala and E. Chong Se €.e 8 6&8 8 Oe 8626. 2 te 6 6 8 2 8 8 D9 Detection of *'Ca with a ’Li>”Cl molecular pilot beam T. Baba, N. Funaya, N. Miyazaki, T. Takahashi, T. Kaikura, R. Seki, S. Sueno, S. Jiang and Y. Nagashima 183 SeCeCcwes2.aeeesdeoe &©@eee@e 2eseetcewti eo ee 2 6 6.8 06 62 8618.68 464 ¢ eS 2 6.8 & 6-6 6 8.8 2:8 8 eS ee eS Experimental investigation of the destruction of 1 MeV "CH, molecules in single and double stripping foils B.J. Hughey, R.E. Shefer, R.E. Klinkowstein, X.L. Zhao, W.E. Kieser and A.E. Litherland 186 Section V. Performance reports and project summaries from different facilities First performance tests of VERA A. Priller, R. Golser, P. Hille, W. Kutschera, W. Rom, P. Steier, A. Wallner and E. Wild 193 The PRIME Lab external research program P. Sharma, D. Elmore and S. Vogt 199 , -@-2 2 @€e2 Oe. 8. 2. 6.8.6.6. 8-2. 6 ee 6 2. ae 8: 6.6.2 OP £2 Oe ee 8 Oe ee OE The new Chalk River AMS ion source, sample changer and external sample magazine V.T. Koslowsky, N. Bray, Y. Imahori, H.R. Andrews and W.G. Davies yee eeoceece ese esces#s ts 6s 6 Section VI. AMS sample and target preparation chemistry Corrections for contamination background in AMS '4C measurements ees ES IS non 66 6566 Od OSS 6% 60s 646 668 06 046 08 SOHO 0 OS Re Radiocarbon dating organic residues at the microgram level D.L. Kimer, R. Burky, R.E. Taylor and J.R. Southon 2 ee 2a et 2. 62:82 €@ 6 8.0 @. 62 6:8 &¢.6& 2 os. 6 8-2 8 8 6 @ 2 Enrichment of sub-milligram size carbon samples Pe, GE Z, WE GE FUE ves 6 hc meee eK SOs ee OK SHOR CSE DOSS OE SOS ES AMS sample handling in Groningen A.Th. Aests-Bijma, H.AJ. Meijer and J. van der Plictt. . . ccc ccccccccccccscccccccces The reduction of sample memory effects in the Chalk River AMS ion source V.T. Koslowsky, H.R. Andrews, W.G. Davies, Y. Imahori and M. Bolusmjak............... Ultra-separation of nickel from copper metal for the measurement of Ni by AMS A.A. Marchetti, LJ. Hainsworth, J.E. McAninch, M.R. Leivers, P.R. Jones, I.D. Proctor and T. EE 6b. 6 0 8:0 6846 8 8868 88 Oe OR OOS 6 606 O46 05S SSO ORDER OS OHO HO The chemical behavior of Be, Al, Fe, Ca and Mg during AMS target preparation from terrestrial silicates modeled with chemical speciation calculations NS 5 6 6-6. 6.000 6 0 6 6S 60040006605 006 8 600 bs ee bee Seb eeese 235 Section VII. Biomedical applications of AMS Elements in biological AMS Ba. VEE, G. Rees GE GA ee. PUREED coro ce eecererceroseoeseoceceeseees 241 A programme for long-term retention studies of '*C-labelled compounds in man using the Lund AMS facility K. Stenstrém, S. Leide-Svegborn, B. Erlandsson, R. Hellborg, G. Skog, S. Mattsson, L.-E. Nilsson ft PPT TT TTT EPRICE ee Te TE eee 245 36C] and '7°1 in teeth and bones R.J. Comett, L. Chant, H.R. Andrews, W.G. Davies, B.F. Greiner, Y. Imahori, V.T. Koslowsky, T. otues, SALT. REG GRO GRE. BERNER cc ccc ccc ccc cer sees sececceeesececceces 249 The influence of dissolved silicate on the physiological chemistry of aluminium, studied in humans using tracer *°Al and accelerator mass spectrometry S.J. King, J.P. Day, C. Oldham, J.F. Popplewell, P. Ackrill, P.B. Moore, G.A. Taylor, J.A. Edwardson, L.K. Fifield, K. Liu and R.G. Cresswell ....022 .e e.ee e.e ee.e ee.e ee e XVi Contents Investigations of the human aluminium biokinetics with ?°Al and AMS G. Kislinger, C. Steinhausen, M. Alvarez-Brickmann, C. Winklhofer, T.-H. Ittel and E. Nolte ..... 259 Human calcium metabolism including bone resorption measured with *"Ca tracer S.P.H.T. Freeman, J.C. King, N.E. Vieira, L.R. Woodhouse and A.L. Yergey ..............- 266 High resolution AMS imaging of radiocarbon in biomedical applications Z.X. Jiang, C. Bronk Ramsey, R.E.M. Hedges, P. Somogyi, J.D.B. Roberts and A. Cowey ....... 271 AMS measurements to study uptake and distribution of ?°Al in mice and the role of the transferrin receptor in aluminium absorption mechanisms J. Barker, J. Templar, S.J. King, J.P. Day, M.W.B. Bradbury, A. Radunovic, F. Ueda, K. Raja, J.S. RA GRE FoF sN s 5 6 6 66 Hee COS OdEEESeeKEKo OE RO Led OSH EOE OCHO EHS HOR 275 °Al uptake and accumulation in the rat brain S. Yumoto, H. Nagai, M. Imamura, H. Matsuzaki, K. Hayashi, A. Masuda, H. Kumazawa, H. Ohashi GE a, HE 8 6c 6656 6 6 ASO EE HHS OTS 66646 0006-6 0 OO OEHEO DE 14 WO* Measurements of aluminum transport in wheat at the cellular level R.R. Johnson, A.D.M. Glass, H. Kronzucker, Z. Gelbart, E. Venczel, M. Paul, D. Berkovits, A. Ce, Bs ME GD Gs ES 0 00's 0 6'0 6666 066 OO FECES OH 6096 Hee 8 eHR EA 283 Section VIII. Cosmogenic nuclides in dust, ice and sediments Identification of bomb-produced chlorine-36 in mid-latitude glacial ice of North America Se | PTET TS LE ETE CTT TCT TUTTE TET eT Measurements of the “co, bomb pulse in firn and ice at Law Dome, Antarctica V.A. Levchenko, D.M. Etheridge, R.J. Francey, C. Trudinger, C. Tuniz, E.M. Lawson, A.M. Smith, G.E. Jacobsen, Q. Hua, M.A.C. Hotchkis, D. Fink, V. Morgan and J. Head. ................ '°Be and dust S. Baumgartner, J. Beer, G. Wagner, P. Kubik, M. Suter, G.M. Raisbeck and F. Yiou .......... A long-term variation of Be flux changes at ODP Site 925 on the Ceara Rise in the equatorial Atlantic M. Murayama, H. Nagai, M. Imamura, S. Hatori, K. Kobayashi and A. Taira ............... Be investigations of sediments, soils and loess at GNS I.J. Graham, R.G. Ditchburn, R.J. Sparks and N.E. Whitehead ............0.2002 2e2 ee e New interpretation of the '°Be and “Al content in cosmic spherules U. Zoppi, H. Matsuzaki, K. Kobayashi, M. Imamura, H. Nagai, S. Hatori, C. Nakano and Y. 6 6 0:8 6 ooo. 6068 68600 bE Ce OES sc6 00004 ONE EN 6 OF oes 65 8 88 Section IX. Isotopes, production rates and cross sections Measurement of proton production cross sections of '°Be and *°Al from elements found in lunar rocks J.M. Sisterson, K. Kim, A. Beverding, P.A.J. Englert, M. Caffee, AJ.T. Jull, D.J. Donahue, L. MccHargue, C. Castaneda, J. Vincent and R.C. Reedy... cc cccccccvcccscccccvccces Measurements of proton-induced production cross sections for °C] from Ca and K M. Imamura, K. Nishiizumi, M.W. Caffee and S. Shibata ......2..02. e. ce.ce .ec.cce es Cosmogenic chlorine-36 production in K-feldspar J.M. Evans, J.O.H. Stone, L.K. Fifield and R.G. Cresswell... ....0.2 eee. eee. ee. cec ces In-situ production of radionuclides at great depths B. Heisinger, M. Niedermayer, F.J. Hartmann, G. Korschinek, E. Nolte, G. Morteani, S. Neumaier, SP, Oy SS Ss IG, PES cece ccc ee eneccensee seseveensue s Section X. '”°I and “CI applications of AMS The '??I AMS program at PRIME Lab Po EL, A EO, Be OG WEN s co ccceeeceesseresseceseeweeeccecsees Determination of total iodine and sample preparation for AMS measurement of '297 in environmental matrices Pi, EF, ks Ss Se Be ED “Soe we ewe ese cbedbconeseeeeicvewss Contents XVii Oil formation and fluid convection in Railroad Valley, NV: a study using cosmogenic isotopes to determine the onset of hydrocarbon migration Fas A, She Se WEIN e666. 06 4-0.0.65 666606 65 84 68S O10 CASA OS OO OO 356 The distribution of '7°I around West Valley, an inactive nuclear fuel reprocessing facility in Western New York i 6 4560s6e0 sd5 O66 00e e6 0 We 60 66e 64606 6SST 8dS b ea 129 I interlaboratory comparison es SE ee ee UE 6 od 0: o'6. 6-0 6 OO Re RS os OOOO See eee eee Cl 36 — A potential paleodating tool G.M. Milton, SJ. Kramer, T.G. Kotzer, J.C.D. Milton, H.R. Andrews, L.A. Chant, R.J. Cornett, W.G. Davies, B.F. Greiner, Y. Imahori, V.T. Koslowsky and J.W. McKay..............206- Is *°Cl from weapons’ test fallout still cycling in the atmosphere? R.J. Cormett, H.R. Andrews, L.A. Chant, W.G. Davies, B.F. Greiner, Y. Imahori, V.T. Koslowsky, T. Se, Sees TE, DE io 6 dG 6 OO 4 N 05-66 Oe Oh OER swe ose we Ores A new interpretation of the distribution of bomb-produced chlorine-36 in the environment, with special reference to the Laurentian Great Lakes J.C.D. Milton, G.M. Milton, H.R. Andrews, L.A. Chant, R.J.J. Cornett, W.G. Davies, B.F. Greiner, Y. Imahori, V.T. Koslowsky, T. Kotzer, S.J. Kramer and J.W. McKay ............222e005 Use of chlorine-36 as tracer for the evolution of waters in geothermal and tectonically active areas in Western Turkey ie eT EE. 6 8.66 04.5.0536- 6S 6 oa 0 HOS 460060 CHES OOOO OS HESS Section XI. Some applications of AMS to different isotopes Environmental ”’Sr measurements M. Paul, D. Berkovits, L.D. Cecil, H. Feldstein, A. Hershkowitz, Y. Kashiv and S. Vogt ........ Accelerator mass spectrometry of the planetary elements L.K. Fifield, A.P. Clacher, K. Morris, S.J. King, R.G. Cresswell, J.P. Day and F.R. Livens....... Determination of the half-life of ’’Se with the accelerator mass spectrometry technique Jiang Songsheng, Guo Jingru, Jiang Shan, Li Chunsheng, Cui Anzhi, He Ming, Wu Shaoyong and Li PFE eeee ree TT eee eee TEL ee CTT TCR CERT LOTR TTT EE Tritium depth profiling in carbon by accelerator mass spectrometry M. Friedrich, G. Sun, R. Grétzschel, R. Behrisch, C. Garcia-Rosales and M.L. Roberts ......... 410 Evidence for anomalous "ag and Ag compositions in iron meteorites G.-J. Ding, L.R. Kilius, G.C. Wilson, X.-L. Zhao and J.C. Rucklidge ...........0000eeee 414 In-situ AMS determination of Re—Os isochron in IIA iron meteorites G.-J. Ding, L.R. Kilius, G.C. Wilson, X.-L. Zhao and J.C. Rucklidge ..........05000eees 424 Section XII. Environmental and paleoclimatic studies using AMS “Cc The first trans-Arctic '*C section: comparison of the mean ages of the deep waters in the Eurasian and Canadian basins of the Arctic Ocean P. Schlosser, B. Kromer, B. Ekwurzel, G. Bénisch, A. McNichol, R. Schneider, K. von Reden, H.G. EN ERE TrPe ene 431 AMS measurements of the '“C distribution in the Pacific Ocean K.F. von Reden, A.P. McNichol, J.C. Peden, K.L. Elder, A.R. Gagnon and R.J. Schneider ....... 438 Radiocarbon in marine dissolved organic carbon (DOC) M. Le Clercq, J. Van der Plicht, H.AJ. Meijer and H.J.W. De Baar..........2..20 ee2 e2e e '4C AMS measurements of the bomb pulse in N- and S-hemisphere tropical trees Field variability of carbon isotopes in soil organic carbon S.W. Leavitt, E.A. Paul, E. Pendall, PJ. Pinter Jr. and B.A. Kimball... ..........02500006- XViii Contents '4C dating of sediment samples W. Kretschmer, G. Anton, M. Bergmann, E. Finckh, B. Kowalzik, M. Klein, M. Leigart, S. Merz, G. Morgenroth, I. Piringer, H. Kiister, R.D. Low and T. Nakamura .........02.2s. e2ee2ee s 455 The 5000-year environmental change and associated human activities at Sokho-nor Lake, Inner Mongo- lia, P.R. China Le Xieneyans, Yuan Baocyim, Guo Ziiye and LI RGR... cc ccc ccc ccc cece ccccccccsece AMS "“C chronological study of holocene activities in active faults in Japan T. Nakamura, M. Okamura, K. Shimazaki, T. Nakata, N. Chida, Y. Suzuki, M. Okuno and A. Ikeda AMS radiocarbon dating of the Sakurajima tephra group, Southern Kyushu, Japan M. Okuno, T. Nakamura, H. Moriwaki and T. Kobayashi ..........ce.ce0 e.ee0ce2ee s Radiocarbon ‘‘dating’’ of individual chemical compounds in atmospheric aerosol: First results compar- ing direct isotopic and multivariate statistical apportionment of specific polycyclic aromatic hydrocar- bons Ria, GE, Ds , Ge, EE Oe, A UD occ ects e see eee wee ereses 475 Section XIII. Applications of AMS to archaeology AMS “Cc dating of lime mortar J. Heinemeier, H. Jungner, A. Lindroos, A. Ringbom, T. von Konow and N. Rud............. 487 Radiocarbon AMS dating of the ancient sites with earliest pottery from the Russian Far East Y.V. Kuzmin, A.J.T. Jull, Z.S. Lapshina and V.E. Medvedev... cc ccccccccccccccccccs 496 Textural and in situ analytical constraints on the provenance of smelted and native archaeological copper in the Great Lakes region of Eastern North America Gi. Witeon, L.A. Paviteh, G.-5. Dime and RG. Pergter . ww ccc ec ccc cece cceccsces 498 A probiematic source of organic contamination of linen H.E. Gove, S.J. Mattingly, A.R. David and L.A. Garza-Valdes ..........0.2 2ee2 ee.ee2e s 504 Section XIV. Negative ions and negative ion sources New approaches to negative ions: resonant ionization spectroscopy and storage rings AST Ter Te eTe e eT eee a Te CTE CTU TCE LOL re 508 Weakly-bound negative ions studied by laser excitation and AMS ee, Gy GU, GO, RN OE OE, FN 6 cc we ecco ce ceeeereceseeccccenees 515 A negative ion survey; towards the completion of the periodic table of the negative ions M.-J. Nadeau, M.A. Garwan, X.-L. Zhao and A.E. Litherland. .............0ee0 eee2e 521 A theoretical study of some negative ions of interest to accelerator mass spectrometry ee Or Ge, Ns sn o'e 6c 0 6 65:60 6 6666 6 OOS S60 Oe CORO HO? 527 Carbon anions and dianion clusters a ele li i oh i a ls ek ee el es ee a eee ee ae we Gre 532 Hybrid ion sources: Radiocarbon measurements from microgram to milligram Se ED I , CRs 5 kn bce bee se bess ows 0 6 8 66 0b oes £0 oes we OO 539 Hold-up and memory effect for carbon in a compact microwave ion source R.J. Schneider, K.F. von Reden, J.S.C. Wills, W.T. Diamond, R. Lewis, G. Savard and H. Schmeing 546 A compact multi-sample high-intensity negative ion source W.Z. Gelbart, R.R. Johnson, M. Paul, D. Berkovits, A. Hershkowitz, F. Cifarelli, R.B. Schubank and 550 A preliminary report on the characteristics of a CO, gas ion source MGF-SNICS at NIES-TERRA Y. Shibata, H. Kume, A. Tanaka, M. Yoneda, Y. Kumamoto, T. Uehiro and M. Morita ......... 554 The AUSTRALIS microbeam ion source a 6 eee Oh ee eee ee esene eee wees ees 558 Section XV. Trace element AMS (TEAMS) A new accelerator mass spectrometer for trace element analysis at the Naval Research Laboratory K.S. Grabowski, D.L. Knies, G.K. Hubler and H.A. Enge ......022. ee. eee. e.ee .enc es Contents xix TEAMS depth profiles in semiconductors S.A. Datar, S.N. Renfrow, B.N. Guo, J.M. Anthony, Z.Y. Zhao and F.D. McDaniel ........... 571 Accelerator SIMS at PSI/ETH Zurich Paces GD, Ee, EE, ee OU I OER, Cs nc i skc e ee sehen eeeer eer eeaceeces 575 Trace-element analysis of mineral grains using accelerator mass spectrometry — from sampling to interpretation G.C. Wilson, L.R. Kilius, J.C. Rucklidge, G.-J. Ding and X.-L. Zhao ............2.22206- 579 Precious metal abundances in selected iron meteorites: in-situ AMS measurements of the six platinum- group elements plus gold G.C. Wilson, J.C. Rucklidge, L.R. Kilius, G.-J. Ding and R.G. Cresswell... ..........20006- 583 1-200 amu tunable Pretzel magnet notch-mass-filter and injector for trace element accelerator mass spectrometry D.L. Knies, K.S. Grabowski, G.K. Hubler and H.A. Enge Section XVI. Summary of the Conference Conference summary: Trends in AMS PTT CTT TEC TOEECIR EEE TLL TEL CLCTLeTe 594

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