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Development of Laboratory Experimental System to Clarify Solar Wind Charge Exchange Mechanism with TES Microcalorimeter

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Abstract

Significant fraction of the cosmic diffuse soft X-ray emission (0.1–1 keV) is caused by the Solar Wind Charge eXchange (SWCX) process between the solar wind ion (Cq+, Nq+, Oq+ etc.) and the interplanetary neutral matter. It is difficult to identify spectral features of SWCX with the spectral resolution of existing X-ray astronomy satellites. We are developing a laboratory experimental system with transition edge sensor (TES) X-ray microcalorimeters, in order to clarify the SWCX mechanism. This experiment is designed to measure Charge eXchange (CX) X-rays using Electron Cyclotron Resonance Ion Source (ECRIS) that generates multi-charged ions. Emission lines (OVIII: 2p→1s; 654 eV) by CX between O8+ and neutral He atom is aimed to be measured with energy resolution better than 10 eV. The TES microcalorimeter is cooled by a double-stage adiabatic demagnetization refrigerator (DADR), however, our TES microcalorimeter are not working potentially due to magnetic field contamination. This paper reports our experimental system, present results, and future prospects.

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Authors and Affiliations

  1. Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo, 192-0397, Japan

    T. Enoki, Y. Ishisaki, H. Akamatsu, Y. Ezoe, T. Ohashi, T. Kanda, T. Ishida & H. Tanuma

  2. The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, Tokyo, 182-8585, Japan

    H. Ohashi

  3. ARD/JAXA, 2-1-1 Swngen, Tsukuba-shi, Ibaraki, 305-8505, Japan

    K. Shinozaki

  4. ISAS/JAXA, 3-1-1 Yoshinodai, Chuo, Sagamihara, Kanagawa, 252-5210, Japan

    K. Mitsuda

Authors
  1. T. Enoki
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  2. Y. Ishisaki
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  3. H. Akamatsu
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  4. Y. Ezoe
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  5. T. Ohashi
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  6. T. Kanda
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  7. T. Ishida
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  8. H. Tanuma
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  9. H. Ohashi
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  10. K. Shinozaki
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  11. K. Mitsuda
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Corresponding author

Correspondence to T. Enoki.

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Enoki, T., Ishisaki, Y., Akamatsu, H. et al. Development of Laboratory Experimental System to Clarify Solar Wind Charge Exchange Mechanism with TES Microcalorimeter. J Low Temp Phys 167, 771–776 (2012). https://doi.org/10.1007/s10909-012-0486-x

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  • DOI: https://doi.org/10.1007/s10909-012-0486-x

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