Published March 2007 | Version v1
Journal article Metadata-only

X-ray detection using superconducting tunnel junction shaped normal-distribution-function

Creators

  • 1. Saitama Univ., Saitama, Saitama (Japan)
  • 2. RIKEN, Wako, Saitama (JP)

Description

A normal-distribution-function-shaped superconducting tunnel junction (NDF-STJ) which consists of Nb/Al-AlOx/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. (author)

Additional details

Publishing Information

Journal Title
IEICE Transactions on Electronics
Journal Volume
90
Journal Issue
3
Journal Page Range
p. 566-568
ISSN
0916-8524

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
38086250
Subject category
S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Descriptors DEI
ALUMINIUM; ALUMINIUM OXIDES; DISPERSIONS; DISTRIBUTION FUNCTIONS; ENERGY RESOLUTION; JOSEPHSON EFFECT; KEV RANGE 01-10; LAYERS; LEAKAGE CURRENT; MAGNETIC FIELDS; NIOBIUM; RADIATION DETECTORS; SUPERCONDUCTING JUNCTIONS; TEMPERATURE DEPENDENCE; TUNNEL EFFECT; X-RAY DETECTION
Descriptors DEC
ALUMINIUM COMPOUNDS; CHALCOGENIDES; CURRENTS; DETECTION; ELECTRIC CURRENTS; ELEMENTS; ENERGY RANGE; FUNCTIONS; KEV RANGE; MEASURING INSTRUMENTS; METALS; OXIDES; OXYGEN COMPOUNDS; RADIATION DETECTION; REFRACTORY METALS; RESOLUTION; TRANSITION ELEMENTS

Optional Information

Notes
5 refs., 5 figs.