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Author(s):
J. Uramoto
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Title:
Clear Detection of Negative Pionlike Particles from H2 Gas Discharge in Magnetic Field
Date of publication:
Oct. 1997
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Key words:
negative pionlike particle pi^-, secondary electron, positive ion
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Abstract:
Electron density outslde H_2 gas discharge plasma along magnetic field, is abruptly reduced as H^- ions are produced. From the region, negative pionlike particles pi^- are extracted together with H^- ions. Then, as decay products of the pi^-, negative muonlike particles mu^- are also observed with high energy electrons. These particles are clearly detected by a magnetic mass analyzer MA utilizing secondary electrons gennerated in the beam collector of MA and secondary positive ions within MA. The production mechanism of pi^- is explained by interaction between an electron bunch and a positive ion bunch in the outside of the plasma.
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