Response of Large Nb-Based Tunnel Junction to X-Rays.
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- MAEHATA Keisuke
- Department of Nuclear Engineering Kyushu University
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- YOSHIDA Shin-ichi
- Department of Nuclear Engineering Kyushu University
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- ISHIBASHI Kenji
- Department of Nuclear Engineering Kyushu University
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- NAKAGAWA Hiroshi
- Electrotechnical Laboratory
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- AKOH Hiroshi
- Electrotechnical Laboratory
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- JOOSSE Koen
- Electrotechnical Laboratory
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- TAKADA Susumu
- Electrotechnical Laboratory
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- KATAGIRI Masaki
- Japan Atomic Energy Research Institute
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- KISHIMOTO Maki
- Japan Atomic Energy Research Institute
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- UKIBE Masahiro
- Department of Quantum Engineering and Systems, University of Tokyo
Bibliographic Information
- Other Title
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- Response of Large Nb-Based Tunnel Junct
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Abstract
High quality Nb-based tunnel junctions with surface areas of 100×100μm2 and 200×200μm2 were tested by irradiating X-rays. According to the decrease in the disappearance of quasiparticles before tunneling, the 200×200μm2 junction exhibited better X-ray response than that of 100×100μm2 one. In the operation of the 200×200μm2 junction, two kinds of stable operation modes with different pulse heights were found by applying a magnetic field with different ramping speeds. The higher pulse height mode was observed with a ramping-speed faster than about 200G/s. After tuning of the bias current in the higher mode operation, the energy required for single electron collection was obtained to be 6.5meV and the junction detected 5.9keV X-rays of 55Mn with an energy resolution (FWHM) of 93eV. The 200×200μm2 junction has the largest dimension among tunnel junctions exceeding silicon-semiconductor detectors in energy resolution.
Journal
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- Journal of Nuclear Science and Technology
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Journal of Nuclear Science and Technology 34 (10), 979-982, 1997
Atomic Energy Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204094892160
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- NII Article ID
- 10002078251
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- NII Book ID
- AA00703720
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- COI
- 1:CAS:528:DyaK2sXnslCgs7o%3D
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- ISSN
- 18811248
- 00223131
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- NDL BIB ID
- 4326331
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed