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Muon spin relaxation for Ar+NO2 systems in transverse and longitudinal magnetic fields

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Abstract

Surface muons produced in UT-MSL were introduced into argon gas of 4.0±0.2 atm with NO2 (0–30 ppm), and muonium signals were detected in the presence of a transverse (1.7–3.4 G) and a longitudinal magnetic field (0–3.5 kG) at 295±1 K. The cross section for the transverse relaxation was (11.0±1.0)×10−16 cm2. The relaxation rates in different longitudinal magnetic fields show that the rate does not follow the conventional equation which assumes that the relaxation occurs mainly by spin-exchange interaction. Similar measurements were performed for the Mu+O2 system. These findings indicate that chemical reactions contribute to these relaxation rates.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, The University of Tokyo, Bunkyo-ku, 113, Tokyo, Japan

    T. Kondow, A. Matsushita & K. Kuchitsu

  2. Department of Physics and Meson Science Laboratory, The University of Tokyo, Bunkyo-ku, 113, Tokyo, Japan

    K. Nishiyama, Y. Morozumi & K. Nagamine

Authors
  1. T. Kondow
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  2. A. Matsushita
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  3. K. Kuchitsu
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  4. K. Nishiyama
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  5. Y. Morozumi
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  6. K. Nagamine
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Kondow, T., Matsushita, A., Kuchitsu, K. et al. Muon spin relaxation for Ar+NO2 systems in transverse and longitudinal magnetic fields. Hyperfine Interact 32, 807–812 (1986). https://doi.org/10.1007/BF02394988

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  • DOI: https://doi.org/10.1007/BF02394988

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