Superconducting Nb-Ta-Al-AlOx-Al X-ray detectors with spatial resolution

被引：11

作者：

Friedrich, S ^{[1
]}

Segall, K ^{[1
]}

Gaidis, MC ^{[1
]}

Toledano, DS ^{[1
]}

Prober, DE ^{[1
]}

Szymkowiak, AE ^{[1
]}

Moseley, SH ^{[1
]}

机构：

[1] NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1996年 / 370卷 / 01期

关键词：

D O I：

10.1016/0168-9002(95)01053-X

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Superconducting X-ray detectors based on SIS tunnel junctions offer potential for high spectral resolution and single photon efficiency. When used in a double junction geometry, they also offer spatial resolution needed for focal plane imaging. We are developing Nb-Ta-Al-AlOx-Al detectors for space-based X-ray astronomy applications. The design employs superconductor bandgap engineering for improved charge collection and adaptability for double junction geometries. For irradiation of a single junction device with 6 keV X-rays at a single location, the detectors have an energy resolution of 87 eV at 0.27 K. Initial studies of double junction detectors show a spectral resolution of 178 eV and an inferred spatial resolution of 4 mu m over an effective length of 60 mu m.

引用

页码：44 / 46

页数：3

共 10 条

[1] SUPERCONDUCTING NB-TA-AL-ALOX-AL TUNNEL-JUNCTIONS FOR X-RAY-DETECTION [J].