DEVELOPMENT OF MICROCALORIMETERS FOR HIGH-RESOLUTION X-RAY SPECTROSCOPY

被引：16

作者：

KELLEY, RL ^{[1
]}

MOSELEY, SH ^{[1
]}

STAHLE, CK ^{[1
]}

SZYMKOWIAK, AE ^{[1
]}

JUDA, M ^{[1
]}

MCCAMMON, D ^{[1
]}

ZHANG, J ^{[1
]}

机构：

[1] UNIV WISCONSIN,DEPT PHYS,MADISON,WI 53706

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1993年 / 93卷 / 3-4期

关键词：

D O I：

10.1007/BF00693424

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have been developing microcalorimeters for use in X-ray spectroscopy. These devices have very high spectral resolution (several eV) and high intrinsic quantum efficiency, making them particularly useful for astrophysical applications. Work has evolved over a 10 year period from simple proof-of-concept devices to functional arrays. An energy resolution of 7.3 eV at 6 keV has been demonstrated for the smallest absorbers used, and a resolution of approximately 12 eV for devices with a pixel area of approximately 1/4 mm2. Present work is focused on making 36 pixel monolithic arrays with individual pixel areas of up to approximately 1 mm2. As the size of the absorbing area is increased, high spectral resolution is more difficult to achieve not only because of the increased heat capacity, but also because of problems with uniform thermalization. We have observed non-ideal effects in large absorbers that must be controlled and minimized before the fabrication of low noise, larger area microcalorimeters can be accomplished.

引用

页码：225 / 230

页数：6

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