X-Ray Detection Using Superconducting Tunnel Junction Shaped Normal-Distribution-Function

Tohru TAINO; Tomohiro NISHIHARA; Koichi HOSHINO; Hiroaki MYOREN; Hiromi SATO; Hirohiko M. SHIMIZU; Susumu TAKADA

doi:10.1093/ietele/e90-c.3.566

X-Ray Detection Using Superconducting Tunnel Junction Shaped Normal-Distribution-Function

Tohru TAINO, Tomohiro NISHIHARA, Koichi HOSHINO, Hiroaki MYOREN, Hiromi SATO, Hirohiko M. SHIMIZU, Susumu TAKADA

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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 0.4 K 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 5 nA. By irradiating with 5.9 keV X-rays, we obtained the spectrum of these NDF-STJs. They showed good energy resolution with small magnetic fields of below 3 mT, which is about one-tenth of those for conventional-shaped STJs.

Publication: IEICE TRANSACTIONS on Electronics Vol.E90-C No.3 pp.566-569

Publication Date: 2007/03/01

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Online ISSN: 1745-1353

DOI: 10.1093/ietele/e90-c.3.566

Type of Manuscript: Special Section PAPER (Special Section on Innovative Superconducting Devices and Their Applications)

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Tohru TAINO, Tomohiro NISHIHARA, Koichi HOSHINO, Hiroaki MYOREN, Hiromi SATO, Hirohiko M. SHIMIZU, Susumu TAKADA, "X-Ray Detection Using Superconducting Tunnel Junction Shaped Normal-Distribution-Function" in IEICE TRANSACTIONS on Electronics, vol. E90-C, no. 3, pp. 566-569, March 2007, doi: 10.1093/ietele/e90-c.3.566.
Abstract: 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 0.4 K 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 5 nA. By irradiating with 5.9 keV X-rays, we obtained the spectrum of these NDF-STJs. They showed good energy resolution with small magnetic fields of below 3 mT, which is about one-tenth of those for conventional-shaped STJs.
URL: https://global.ieice.org/en_transactions/electronics/10.1093/ietele/e90-c.3.566/_p

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@ARTICLE{e90-c_3_566,
author={Tohru TAINO, Tomohiro NISHIHARA, Koichi HOSHINO, Hiroaki MYOREN, Hiromi SATO, Hirohiko M. SHIMIZU, Susumu TAKADA, },
journal={IEICE TRANSACTIONS on Electronics},
title={X-Ray Detection Using Superconducting Tunnel Junction Shaped Normal-Distribution-Function},
year={2007},
volume={E90-C},
number={3},
pages={566-569},
abstract={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 0.4 K 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 5 nA. By irradiating with 5.9 keV X-rays, we obtained the spectrum of these NDF-STJs. They showed good energy resolution with small magnetic fields of below 3 mT, which is about one-tenth of those for conventional-shaped STJs.},
keywords={},
doi={10.1093/ietele/e90-c.3.566},
ISSN={1745-1353},
month={March},}

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TY - JOUR
TI - X-Ray Detection Using Superconducting Tunnel Junction Shaped Normal-Distribution-Function
T2 - IEICE TRANSACTIONS on Electronics
SP - 566
EP - 569
AU - Tohru TAINO
AU - Tomohiro NISHIHARA
AU - Koichi HOSHINO
AU - Hiroaki MYOREN
AU - Hiromi SATO
AU - Hirohiko M. SHIMIZU
AU - Susumu TAKADA
PY - 2007
DO - 10.1093/ietele/e90-c.3.566
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E90-C
IS - 3
JA - IEICE TRANSACTIONS on Electronics
Y1 - March 2007
AB - 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 0.4 K 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 5 nA. By irradiating with 5.9 keV X-rays, we obtained the spectrum of these NDF-STJs. They showed good energy resolution with small magnetic fields of below 3 mT, which is about one-tenth of those for conventional-shaped STJs.
ER -