Deep Underground Search for Massive Magnetic Monopoles by CR-39 Plastic Track Detector

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概要

• 論文の詳細を見る

• A 80 m' detector array consisting of two layers of CR-39 plastic track detector andan iron absorber was exposed at deep underground (2700 rn.w.e.) in Kamioka minefor 1.8 yr. This plastic plate can detect tracks of penetrating monopoles with energyloss ratc greater than that of a neucleus with Z/73>, 10. Considering recoil of the Cand 0 atoms in CR-39 due to diamagnetic repulsion, CR-39 plastic detector is considered to be sensitive to the monopoles at velocities down to about 10- ' c. We havefound no monopole candidate, and this implies that the upper limit on the flux ofgrand-unified-theory monopoles with r?10 'c or r;>5.5Xl0 'c is 3.0lxl10 "cm 's 'sr ' at 90% confidence level.

• 社団法人日本物理学会の論文
• 1986-11-15

著者

• TASAKA Shigeki

  Faculty of Education, Gifu University

• Tasaka Shigeki

  Faculty Of Education Gifu University

• SUDA Teruhiro

  Institute for Cosmic Ray Research,University of Tokyo

• Suda Teruhiro

  Institute For Cosmic Ray Research University Of Tokyo

関連論文

• PRELIMINARY RESULTS FROM RADON OBSERVATION AT SYOWA STATION, ANTARCTICA, DURING 1996
• Atmospheric Neutrino Background and Pion Nuclear Effect for KAMIOKA Nucleon Decay Experiment
• Search for Nucleon Decays into Anti-Neutrino+Mesons
• Search for Nucleon Decays Catalyzed by Magnetic Monopoles
• Search for Nucleon Decay into Charged Lepton+Mesons
• Deep Underground Search for Massive Magnetic Monopoles by CR-39 Plastic Track Detector

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