Heavy ion AMS with a "small" accelerator

被引：48
|
作者：
Steier, P
Golser, R
Kutschera, W
Liechtenstein, V
Priller, A
Valenta, A
Vockenhuber, C
机构：
[1] Univ Vienna, Inst Isotop Res & Nucl Phys, VERA Lab, A-1090 Vienna, Austria
[2] Russian Res Ctr, Kurchatov Inst, Inst Nucl Fus, Moscow, Russia
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2002年 / 188卷
关键词：
AMS; uranium; U-236; joachimsthal;
D O I：
10.1016/S0168-583X(01)01114-4
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Compared to heavy ion ANIS at large tandem accelerators (TV greater than or equal to 8 MV) and for cases where stable isobar interference is absent, a small facility like VERA (TV = 3 MV) is shown to be able to offset the disadvantage of lower ion energy. After testing the system with Pb-210/Pb-208 isotope ratio measurements, we prove this by a measurement of U-236 at natural levels in a material separated before 1918 and therefore free from anthropogenic contamination. An isotopic ratio of U-236/U-238 = (6.1 +/- 0.4) x 10(-11) was found for this material. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：283 / 287
页数：5
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