Simultaneous measurement of tritium and radiocarbon by ultra-low-background proportional counting

被引：0

作者：

Mace, Emily ^{[1
]}

Aalseth, Craig ^{[1
]}

Alexander, Tom ^{[1
]}

Back, Henning ^{[1
]}

Day, Anthony ^{[1
]}

Hoppe, Eric ^{[1
]}

Keillor, Martin ^{[1
]}

Moran, Jim ^{[1
]}

Overman, Cory ^{[1
]}

Panisko, Mark ^{[1
]}

Seifert, Allen ^{[1
]}

机构：

[1] Pacific Northwest Natl Lab, 902 Battelle Blvd,MSIN J4-65, Richland, WA 99352 USA

来源：

APPLIED RADIATION AND ISOTOPES | 2017年 / 126卷

关键词：

Tritium; Radiocarbon; Ultra-low-background; Proportional counting; Dual-isotope measurements; CHEMICAL FORMS; C-14; WATER; METHANE; ENVIRONMENT; FUKUOKA; JAPAN; H-3;

D O I：

10.1016/j.apradiso.2016.12.033

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Use of ultra-low-background capabilities at Pacific Northwest National Laboratory provide enhanced sensitivity for measurement of low-activity sources of tritium and radiocarbon using proportional counters. Tritium levels are nearly back to pre-nuclear test backgrounds (similar to 2-8 TU in rainwater), which can complicate their dual measurement with radiocarbon due to overlap in the beta decay spectra. We present results of single-isotope proportional counter measurements used to analyze a dual-isotope methane sample synthesized from similar to 120 mg of H2O and present sensitivity results.

引用

页码：171 / 174

页数：4

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