Hot-Spot Detection Model in Superconducting Nano-Stripline Detector for keV Ions
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概要
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Superconducting nano-stripline detectors (SSLDs) are promising for realizing ideal ion detection in mass spectrometry. We have investigated the ion detection efficiency of a niobium nitride (NbN) SSLD, measuring the bias current dependence of the detection efficiency for Ar+, Ar2+, and Ar3+ ions accelerated by static voltages between 0.5 and 3 kV. The bias current dependence exhibited a distinct plateau in a high bias region and an abrupt reduction at a certain bias current (threshold bias current) that decreased with increasing kinetic energy. It was found that the kinetic energy dependence of the threshold bias current is consistent with a hot-spot model.
- 2011-08-25
著者
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Wang Zhen
National Inst. Information And Communications Technol. Kobe Jpn
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UKIBE Masahiro
National Institute of Advanced Industrial Science and Technology
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OHKUBO Masataka
National Institute of Advanced Industrial Science and Technology
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Miki Shigehito
National Inst. Information And Communications Technol. Kobe Jpn
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Shiki Shigetomo
National Astronomical Observatory
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Suzuki Koji
National Institute Of Advanced Industrial Science And Technology (aist)
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Miki Shigehito
National Institute of Information and Communications Technology (NICT), Kobe 651-2492, Japan
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Koike Masaki
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
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Suzuki Koji
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
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