A low-background γγ-coincidence spectrometer for radioisotope studies

被引：5

作者：

Tillett, Andrew ^{[1
]}

Dermigny, John ^{[1
,2
]}

Emamian, Mark ^{[2
,3
]}

Tonin, Yuri ^{[1
,6
]}

Bucay, Igal ^{[1
]}

Smith, Rachel L. ^{[4
,5
]}

Darken, Michael ^{[1
]}

Dearing, Corey ^{[1
]}

Orbon, Mikaela ^{[1
]}

Iliadis, Christian ^{[1
,2
]}

机构：

[1] Univ North Carolina Chapel Hill, Dept Phys & Astron, Chapel Hill, NC 27599 USA

[2] Triangle Univ Nucl Lab, Durham, NC 27708 USA

[3] Duke Univ, Dept Phys, Durham, NC 27708 USA

[4] North Carolina Museum Nat Sci, 121 West Jones St, Raleigh, NC 27603 USA

[5] Appalachian State Univ, Dept Phys & Astron, 525 Rivers St, Boone, NC 28608 USA

[6] Minist Educ Brazil, CAPES Fdn, BR-70040020 Brasilia, DF, Brazil

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2017年 / 871卷

关键词：

elsarticle.cls; LaTeX; Elsevier; Template; RAY SPECTROMETER; LEVEL; DETECTORS; SYSTEM;

D O I：

10.1016/j.nima.2017.07.057

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The performance of a new, low-background NaI(Tl) spectrometer, based on gamma gamma-coincidence counting, is discussed. We present experimental coincidence efficiencies, timing resolutions, background count rates, and minimum detectable activities. The spectrometer has been simulated using Geant4, and the results are used for estimating coincidence efficiencies for volume sources. To test the device, we measured the cosmogenic Al-26 activity in a small (17.7 g) meteorite fragment. We find a value of 52.9 +/- 7.8 dpm/kg, in agreement with the activity measured previously in a much larger fragment of the same meteorite using a HPGe detector. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：66 / 71

页数：6

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