A Novel Type of Absorber Presenting a Constant Detection Efficiency for up to 25 keV X-Ray Photons

被引：6

作者：

Rodrigues, M. ^{[1
]}

Loidl, M. ^{[1
]}

Le-Bret, C. ^{[1
]}

机构：

[1] CEA, LIST, Lab Natl Henry Becquerel, F-91191 Gif Sur Yvette, France

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2012年 / 167卷 / 3-4期

关键词：

X-ray spectrometry; Metallic magnetic calorimeters; Cryogenic detectors; METALLIC MAGNETIC CALORIMETERS; SPECTROMETRY;

D O I：

10.1007/s10909-012-0537-3

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A novel type of absorber, dedicated to cryogenic detectors, was conceived to reach a high and constant intrinsic detection efficiency (> 98%) for up to 25 keV X-ray photons. The absorber consists of two layers having a different atomic number Z. The role of the first layer (large Z) is to make negligible the transmission through the absorber; while the second layer (medium Z) has to reabsorb the escape photons from the first layer. A metallic magnetic calorimeter was realized with an Au-Ag absorber. The required thicknesses of both layers were determined using Monte Carlo simulation of the efficiency. To show the advantages of such a detector, its efficiency and its energy resolution are compared to the efficiency and energy resolution of a gold absorber using a Am-241 source.

引用

页码：510 / 515

页数：6

共 8 条

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