A multiwire proportional counter for XAS fluorescence experiments

被引：2
|
作者：
Barrea, RA
Tamura, E
Tolentino, HCN
机构：
[1] Lab Nacl Luz Sincrotron, BR-13083970 Campinas, SP, Brazil
[2] Univ Nacl Cordoba, Fac Matemat Astron & Fis, RA-5010 Cordoba, Argentina
来源：
JOURNAL OF SYNCHROTRON RADIATION | 2001年 / 8卷 / 02期
关键词：
multiwire proportional counters; x-ray detectors; diluted samples; fluorescence EXAFS;
D O I：
10.1107/S0909049500014746
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A multiwire proportional counter was used in fluorescence X-ray absorption measurements and a comparison to a Si( Li) and NaI(Tl) detectors was done. The main features of the multiwire proportional counter are its high counting rate capability (10(7) counts.s(-1)) and large active area (6 x 6 cm(2)). It was shown that the MWPC is suitable for fluorescence absorption. Although the maximum capability was not reached in the present experiments, it was found that as the counting rate increase the MWPC performance became better than Si(Li) detectors and shows a similar response to the scintillator counter at medium counting rates (up to 10(5) counts.s(-1)).
引用
收藏
页码：381 / 383
页数：3
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