書誌事項
- 公開日
- 2004-08
- 権利情報
-
- https://www.elsevier.com/tdm/userlicense/1.0/
- https://www.elsevier.com/legal/tdmrep-license
- https://doi.org/10.15223/policy-017
- https://doi.org/10.15223/policy-037
- https://doi.org/10.15223/policy-012
- https://doi.org/10.15223/policy-029
- https://doi.org/10.15223/policy-004
- DOI
-
- 10.1016/j.nimb.2004.04.022
- 公開者
- Elsevier BV
この論文をさがす
説明
Abstract MALT (Micro-Analysis Laboratory, Tandem accelerator) at The University of Tokyo is a research and service facility for elemental and isotopic analysis using a tandem accelerator for AMS, PIXE and NRA. Among these, AMS is the most promising technique at MALT. After the AMS-8 conference in 1999, the overall performance was greatly improved for 10Be-, 26Al- and 14C-AMS. For 10Be-AMS, the negative ion current was considerably increased by a new Cs-ionizer system and the replacement of the compound powder (Nb instead of Ag) for the BeO target. More than 3 μA current of BeO− ions can be extracted while it had been typically 1 μA before. For 26Al-AMS, by examining the sample ignition process, the negative ion gain was increased more than 200 nA (typically 100 nA before), which greatly improved the overall efficiency. For 14C-AMS, the 12C− current dependency problem has been moderated substantially by installing a fine controllable Cs oven and careful beam tuning. As a consequence, the precision is now better than 0.5% for modern carbon. In addition, systems for 36Cl-AMS and 129I-AMS are currently being developed for future research programs at MALT.
収録刊行物
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- Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
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Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 223-224 92-99, 2004-08
Elsevier BV
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詳細情報 詳細情報について
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- CRID
- 1363670319017223168
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- NII論文ID
- 30003325869
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- ISSN
- 0168583X
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- データソース種別
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- CiNii Articles
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