MEASUREMENTS OF NATURAL CONCENTRATIONS OF I-129 IN URANIUM ORES BY ACCELERATOR MASS-SPECTROMETRY

被引：26

作者：

BOARETTO, E ^{[1
]}

BERKOVITS, D ^{[1
]}

HOLLOS, G ^{[1
]}

PAUL, M ^{[1
]}

机构：

[1] WEIZMANN INST SCI,DEPT NUCL PHYS,IL-76100 REHOVOT,ISRAEL

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1990年 / 50卷 / 1-4期

关键词：

D O I：

10.1016/0168-583X(90)90369-6

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

An accelerator mass spectrometry system is described and utilized for measurements of 129I concentrations in natural and environmental samples. We report here on measurements of 129I isotopic abundances in iodine reagents and in iodine of mineral origin and of 129I concentrations in uranium ores of different origins. The 129I isotopic abundances for two measured contemporary iodine reagents and for iodine from a deep underground brine are 1.3 × 10-13 and about 4 × 10-14, respectively. 129I U ratios in the range 10-13-10-12 are measured and compared to a simple model of 129I production by spontaneous and induced fission of uranium. No clear correlation with the uranium concentrations or residence times is observed. © 1990.

引用

页码：280 / 285

页数：6

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