INVESTIGATION OF EPITAXIAL NIOBIUM BASED SUPERCONDUCTING TUNNEL JUNCTION DETECTORS

被引：4

作者：

LEMKE, S ^{[1
]}

HEBRANK, F ^{[1
]}

FOMINAYA, F ^{[1
]}

GROSS, R ^{[1
]}

HUEBENER, RP ^{[1
]}

RANDO, N ^{[1
]}

VANDORDRECHT, A ^{[1
]}

HUEBNER, P ^{[1
]}

VIDELER, P ^{[1
]}

PEACOCK, A ^{[1
]}

机构：

[1] EUROPEAN SPACE AGCY,ESTEC,DEPT SPACE SCI,DIV ASTROPHYS,2201 AZ NOORDWIJK,NETHERLANDS

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)91331-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Superconducting Nb/Al-AlO(x)/Nb tunnel junctions (STJs) with epitaxial niobium base electrode are investigated as weak x-ray detectors. The recorded x-ray spectra show a two peak structure that is attributed to the absorption of 6 keV x-rays in the two junction electrodes. Low Temperature Scanning Electron Microscopy (LTSEM) proves, that the high charge output peak of the x-ray spectra is associated with x-rays absorbed in the epitaxial niobium film. The significantly reduced charge output for events in the polycrystalline niobium electrode is found to be bias voltage dependent.

引用

页码：1663 / 1664

页数：2

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