The LLNL AMS facility

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The AMS facility at Lawrence Livermore National Laboratory (LLNL) routinely measures the isotopes {sup 3}H, {sup 7}Be, {sup 10}Be, {sup 14}C, {sup 26}Al, {sup 36}Cl, {sup 41}Ca, {sup 59,63}Ni, and {sup 129}I. During the past two years, over 30,000 research samples have been measured. Of these samples, approximately 30% were for {sup 14}C bioscience tracer studies, 45% were {sup 14}C samples for archaeology and the geosciences, and the other isotopes constitute the remaining 25%. During the past two years at LLNL, a significant amount of work has gone into the development of the Projectile X-ray AMS (PXAMS) technique. PXAMS uses ... continued below

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9 p.

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Roberts, M. L.; Bench, G. S. & Brown, T. A. May 1996.

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Description

The AMS facility at Lawrence Livermore National Laboratory (LLNL) routinely measures the isotopes {sup 3}H, {sup 7}Be, {sup 10}Be, {sup 14}C, {sup 26}Al, {sup 36}Cl, {sup 41}Ca, {sup 59,63}Ni, and {sup 129}I. During the past two years, over 30,000 research samples have been measured. Of these samples, approximately 30% were for {sup 14}C bioscience tracer studies, 45% were {sup 14}C samples for archaeology and the geosciences, and the other isotopes constitute the remaining 25%. During the past two years at LLNL, a significant amount of work has gone into the development of the Projectile X-ray AMS (PXAMS) technique. PXAMS uses induced characteristic x-rays to discriminate against competing atomic isobars. PXAMS has been most fully developed for {sup 63}Ni but shows promise for the measurement of several other long lived isotopes. During the past year LLNL has also conducted an {sup 129}I interlaboratory comparison exercise. Recent hardware changes at the LLNL AMS facility include the installation and testing of a new thermal emission ion source, a new multianode gas ionization detector for general AMS use, re-alignment of the vacuum tank of the first of the two magnets that make up the high energy spectrometer, and a new cryo-vacuum system for the AMS ion source. In addition, they have begun design studies and carried out tests for a new high-resolution injector and a new beamline for heavy element AMS.

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9 p.

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INIS; OSTI as DE96010425

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  • 7. international accelerator mass spectrometry conference, Tucson, AZ (United States), 20-24 May 1996

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  • Other: DE96010425
  • Report No.: UCRL-JC--123254
  • Report No.: CONF-9605169--1
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 238574
  • Archival Resource Key: ark:/67531/metadc667685

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  • May 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 23, 2016, 4:22 p.m.

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Roberts, M. L.; Bench, G. S. & Brown, T. A. The LLNL AMS facility, article, May 1996; California. (digital.library.unt.edu/ark:/67531/metadc667685/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.