Detection of synchrotron radiation by Nb-based superconducting tunnel junctions

K. Maehata, K. Ishibashi, H. Nakagawa, H. Akoh, S. Takada, T. Nakashima, H. Shimizu, M. Yoshizawa, M. Katagiri

Research output: Contribution to journalArticlepeer-review


Monoenergetic X-rays extracted from synchrotron radiation were detected by two kinds of Nb-based superconducting tunnel junctions. Each of junctions had been fabricated by using different fabrication processes. Measurements were carried out under severe noisy circumstances. A cooled-FET preamplifier was employed to improve the signal to noise ratio. Pulse height distributions of the output signal of the preamplifier were obtained for monoenergetic X-rays in a range of 4 to 15 keV. Values of the energy for single electron collection were found to exhibit a nonlinear dependence on the energy of incident X-rays.

Original languageEnglish
Pages (from-to)29-34
Number of pages6
JournalDenshi Gijutsu Sogo Kenkyusho Iho/Bulletin of the Electrotechnical Laboratory
Issue number6-7
Publication statusPublished - 1997

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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