Characterization of Coincidence Doppler Broadening and Positron Annihilation Lifetime Systems at INL

被引：5
|
作者：
Taylor, C. N. [1 ]
Fuerst, T. F. [2 ]
Shimada, M. [1 ]
机构：
[1] Idaho Natl Lab, Fus Safety Program, 2525 Freemont Ave, Idaho Falls, ID 83415 USA
[2] Colorado Sch Mines, Dept Chem & Biol Engn, Golden, CO 80401 USA
来源：
18TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION (ICPA-18) | 2019年 / 2182卷
关键词：
Positron annihilation lifetime spectroscopy; coincidence Doppler broadening; titanium deuteride; HYDROGEN EMBRITTLEMENT; TITANIUM;
D O I：
10.1063/1.5135842
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
A new combined positron annihilation lifetime spectroscopy (PALS) and coincidence Doppler broadening (CDB) system has been constructed at Idaho National Laboratory (INL). The design and commissioning process are discussed with practical guidelines that can be followed for the installation of new systems. In addition, the new system was used to investigate defect structure in titanium and titanium deuteride samples where the deuterium concentration ranges from 0.10 to 2 x 10(-5). The TiD samples were found to be largely defect free based on the positron lifetimes and SW curves. Ratio curves of the CDB spectra showed elemental sensitivity to the deuterium in the samples, that increased with deuterium concentration.
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页数：6
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