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Solar neutrino

Journal Article:

Abstract

The measurement of solar neutrino was performed by using the reaction /sup 37/cl+..nu..sub(e)..-->../sup 37/Ar+e/sup -/ by Davis et al. The argon gas produced through the above mentioned reaction in a tank containing 610 ton of C/sub 2/Cl/sub 4/ was collected and measured. The rate of production of /sup 37/Ar was 0.13+-0.20/day, and the net production rate by the solar neutrino was 0.06+-0.20/day, being corrected for background. This value corresponds to 0.5+-1.0 SNU. Theoretical calculation with the model of spherically symmetric solar development gave an expected value of 5.6 SNU, which is in contradiction with the experimental value. Reason of this discrepancy was considered. The possibility of decay of neutrino to the other particles with weak interaction is very slight. Various models of the sun were investigated, but the results were still inconsistent with the experiment. The mixing of matters in the sun may cause the reduction of neutrino. If He gas comes to the center of the sun by mixing, the reaction, /sup 3/He+/sup 3/He, progresses excessively at the center, and it produces the expansion of the core of the sun. Then, the temperature drops and the neutrino is reduced. Various models which can explain the neutrino of less than  More>>
Authors:
Sugimoto, D [1] 
  1. Tokyo Univ. (Japan). Coll. of General Education
Publication Date:
Jan 01, 1975
Product Type:
Journal Article
Reference Number:
AIX-07-254073; EDB-76-072690
Resource Relation:
Journal Name: Uchusen Kenkyu; (Japan); Journal Volume: 19:2
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; SOLAR RADIATION; NEUTRINOS; ASTROPHYSICS; CHLORINE 37 TARGET; COSMIC RAY FLUX; KINETICS; NEUTRINO DETECTION; NEUTRINO REACTIONS; SOLAR ACTIVITY; ELEMENTARY PARTICLES; FERMIONS; LEPTON REACTIONS; LEPTONS; MASSLESS PARTICLES; NUCLEAR REACTIONS; RADIATION DETECTION; RADIATION FLUX; RADIATIONS; TARGETS; 640104* - Astrophysics & Cosmology- Solar Phenomena
OSTI ID:
7181705
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: UCKEA
Submitting Site:
INIS
Size:
Pages: 304-308
Announcement Date:

Journal Article:

Citation Formats

Sugimoto, D. Solar neutrino. Japan: N. p., 1975. Web.
Sugimoto, D. Solar neutrino. Japan.
Sugimoto, D. 1975. "Solar neutrino." Japan.
@misc{etde_7181705,
title = {Solar neutrino}
author = {Sugimoto, D}
abstractNote = {The measurement of solar neutrino was performed by using the reaction /sup 37/cl+..nu..sub(e)..-->../sup 37/Ar+e/sup -/ by Davis et al. The argon gas produced through the above mentioned reaction in a tank containing 610 ton of C/sub 2/Cl/sub 4/ was collected and measured. The rate of production of /sup 37/Ar was 0.13+-0.20/day, and the net production rate by the solar neutrino was 0.06+-0.20/day, being corrected for background. This value corresponds to 0.5+-1.0 SNU. Theoretical calculation with the model of spherically symmetric solar development gave an expected value of 5.6 SNU, which is in contradiction with the experimental value. Reason of this discrepancy was considered. The possibility of decay of neutrino to the other particles with weak interaction is very slight. Various models of the sun were investigated, but the results were still inconsistent with the experiment. The mixing of matters in the sun may cause the reduction of neutrino. If He gas comes to the center of the sun by mixing, the reaction, /sup 3/He+/sup 3/He, progresses excessively at the center, and it produces the expansion of the core of the sun. Then, the temperature drops and the neutrino is reduced. Various models which can explain the neutrino of less than ISNU have been presented. However, other theory says that the reduction of neutrino is not expected even if the mixing is considered. A problem concerning the mixing is whether the thermal instability which causes the mixing exists. (Kato, T.).}
journal = {Uchusen Kenkyu; (Japan)}
volume = {19:2}
journal type = {AC}
place = {Japan}
year = {1975}
month = {Jan}
}