X-Ray Detection Using Superconducting Tunnel Junction Shaped Normal-Distribution-Function(<Special Section>Innovative Superconducting Devices and Their Applications)
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概要
- 論文の詳細を見る
A normal-distribution-function-shaped superconducting tunnel junction (NDF-STJ) which consists of Nb/Al-AlO_x/Al/Nb has been fabricated as an X-ray detector. Current-voltage characteristics were measured at 0.4K using three kinds of STJs, which have the dispersion parameters σ of 0.25, 0.45 and 0.75. These STJs showed very low subgap leakage current of about 5nA. By irradiating with 5.9keV X-rays, we obtained the spectrum of these NDF-STJs. They showed good energy resolution with small magnetic fields of below 3mT, which is about one-tenth of those for conventional-shaped STJs.
- 社団法人電子情報通信学会の論文
- 2007-03-01
著者
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Sato Hiromi
Riken
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Sato H
Riken
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TAINO Tohru
Saitama University
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NISHIHARA Tomohiro
Saitama University
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HOSHINO Koichi
Saitama University
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MYOREN Hiroaki
Saitama University
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SHIMIZU Hirohiko
RIKEN
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TAKADA Susumu
Saitama University
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KATO Hiroshi
The authors are with RIKEN (The Institute of Physical and Chemical Research)
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Kato H
Saitama University
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Kato Hiroshi
Saitama University
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Kato Haruo
Saitama University
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