ENERGY RESOLVED X-RAY-DETECTION IN AL-NB PROXIMITY LAYERS

被引：12

作者：

GOLDIE, DJ ^{[1
]}

PATEL, C ^{[1
]}

BOOTH, NE ^{[1
]}

SALMON, GL ^{[1
]}

机构：

[1] SPACE RES ORG NETHERLANDS,LAB SPACE RES UTRECHT,3584 CA UTRECHT,NETHERLANDS

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1993年 / 6卷 / 03期

关键词：

D O I：

10.1088/0953-2048/6/3/008

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on our initial investigation of the response to 6 keV x-rays of composite aluminium/niobium films forming one side of a superconducting tunnel junction. The non-equilibrium state generated by the x-ray interactions that occur in the thick Nb layer is detected with high-resolution detectors. We find a noise-limited energy resolution of 100 eV (full width at half maximum) for x-rays of incident energy 5.89 keV. The choice of a smaller gap superconductor as a probe film permits detection of the phonons generated by quasiparticle trapping from the Nb and enhancement of the initial quasiparticle number. The results also demonstrate the strong dependence of the detected signal as a function of bias voltage which is inherent in tunnel junctions between dissimilar superconductors.

引用

页码：203 / 208

页数：6

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