ENERGY-RESOLVING SUPERCONDUCTING X-RAY-DETECTORS WITH CHARGE AMPLIFICATION DUE TO MULTIPLE QUASI-PARTICLE TUNNELING

被引：95

作者：

MEARS, CA ^{[1
]}

LABOV, SE ^{[1
]}

BARFKNECHT, AT ^{[1
]}

机构：

[1] CONDUCTUS INC,SUNNYVALE,CA 94086

来源：

APPLIED PHYSICS LETTERS | 1993年 / 63卷 / 21期

关键词：

D O I：

10.1063/1.110286

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting tunnel junctions coupled to superconducting absorbers may be used as high-resolution, high-efficiency x-ray spectrometers. We have tested devices with niobium x-ray absorbing layers coupled to aluminum layers that serve as quasiparticle traps. The energy resolution at 6 keV was 49 eV full width at half-maximum. We estimate that each quasiparticle tunnels an average of 19 times before recombining, increasing the total charge transferred and therefore decreasing the effects of electronic noise.

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页码：2961 / 2963

页数：3

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