NIFS-532

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Author(s):

J. Uramoto

Title:

Pair Creations of Negative and Positive Pionlike (Muonlike) Particle or K Mesonlike (Muonlike) Particle in H2 or D2 Gas Discharge in Magnetic Field

Date of publication:

Dec. 1997

Key words:

positive pionlike particle pi^+, positive muonlike particle mu^+, positive K mesonlike particle K^+

Abstract:

Both negative pionlike (pi^-) or muonlike (mu^-) Particles and positive pionlike (pi^+) or muonlike (mu^+) particles are extracted at an acceleration voltage of 800V with H^- ions and H^+, H_3^+ ions from outside region of H_2 gas discharge along magnetic field. Similarly, both negative K mesonlike (K^-) or muonlike (mu^-) particles and positive K mesonlike (K^+) or muonlike (mu^+) particles are extracted with D^- ions and D^+, (D_3^+) ions from outside region of D_2 gas discharge along magnetic field. Then, the pi^-, mu^-, K^- particles are detected easily as the apparent current to the beam collector (BC) of a magnetic mass analyzer increases extremely when a positive bias voltage is applied to BC and positive ions are supplied in front of BC. It should be noted that the pi^+, mu^+, K^+ particles do not penetrate a metal plate while the pi^-, mu^-, K^- particles penetrate the metal plate easily.

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