Measurements of 135Cs/137Cs in debris from the Trinity nuclear test

被引：0
|
作者：
Boggs, Mark A. [1 ]
Reinhard, Andrew A. [1 ]
Inglis, Jeremy [1 ]
Tutt, James [1 ]
Lee, Gabrielle [1 ]
Margiotta, Cheriece [1 ]
机构：
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2023年 / 332卷 / 10期
关键词：
TIMS; Nuclear debris; Cesium; Nuclear forensics; CESIUM ISOTOPE RATIOS; ENVIRONMENTAL-SAMPLES; MASS-SPECTROMETRY; FISSION-PRODUCTS; CATION-EXCHANGE; CS-135; FRACTIONATION; CONSTRAINTS; VOLATILITY; FALLOUT;
D O I：
10.1007/s10967-023-09096-9
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Cs-135/Cs-137 measurements were performed on a set of debris samples from the first nuclear test, Trinity. Debris from several locations around ground zero of the event were purified and analyzed for Cs-135/Cs-137 by thermal ionization mass spectrometry (TIMS). The Cs-isotopic measurements presented here are the first high precision TIMS Cs-135/Cs-137 measurements of trinitite from variable locations and cooling histories relative to ground zero. Our measurements show a large fractionation from the predicted fission yields, all with a relative enrichment in Cs-137. Cs-135/Cs-137 ratios indicate that condensation times varied between different debris forms, however they are not consistent with an unfractionated decay to Cs from independent fission products. Variations in Cs-135/Cs-137 ratios are observed with relative distance from ground zero as well as Cs-135/Cs-137 heterogeneities between different trinitite lithologies within a single sample.
引用
收藏
页码：4157 / 4165
页数：9
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