Investigation of space-charge effects in gaseous tritium as a source of distortions of the beta spectrum observed in the Troitsk neutrino-mass experiment

Journal Article · Sat Mar 15 00:00:00 EDT 2008 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778808030046· OSTI ID:22028138

Belesev, A I; Geraskin, E V; Zhuikov, B L; Zadorozhny, S V; Kazachenko, O V; Kohanuk, V M; Lihovid, N A; Lobashev, V M; Nozik, A A; Parfenov, V I; Skasyrskaya, A K; Sudachkov, E A; Titiov, N A; Usanov, V G ^[1]

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1. Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)

Results of searches for effects of space-charge accumulation in the gaseous tritium source in the Troitsk neutrino-mass experiment are presented. The broadening and the shift of the L3 line of conversion electrons in a {sup 83m}Kr gaseous source circulating together with tritium was investigated. The attained limit on the magnitude of fluctuations of the space-charge potential makes it possible to set a limit on the negative neutrino mass squared in the Troitsk neutrino-mass experiment (-0.8 < {Delta}m{sub {nu}}{sup 2} {<=} 0 eV{sup 2}), a spurious effect associated with this potential. A statistically reliable shift of the position of the L3 line is discovered. This indicates that processes of of space-charge accumulation do indeed proceed in the source at a level that is significant for the future experiment Katrin.

• OSTI ID: 22028138
• Journal Information: Physics of Atomic Nuclei, Vol. 71, Issue 3; Other Information: Copyright (c) 2008 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA SPECTRA
BUILDUP
CONVERSION
ELECTRONS
FLUCTUATIONS
KRYPTON 83
NEGATIVE MASS
NEUTRINOS
POTENTIALS
REST MASS
SPACE CHARGE
TRITIUM