Search for Radiative [beta]-Decay of the Free Neutron: 1

Results of the first experiment to search for the radiative decay mode of the free neutron are reported. The γ-spectrum was studied in the energy region from 35 keV to 100 keV in six Cs(Tl) scintillators, each set at an angle of 35° to, and shielded from, a central plastic scintillator electron dete...

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Bibliographic Details
Published in:Journal of research of the National Institute of Standards and Technology 2005-07, Vol.110 (4), p.415-420
Main Authors: Byrne, J, Khafizov, R U, Mostovoi, Yu A, Rozhnov, O
Format: Article
Language:English
Subjects:
Electrons
Neutrons
Particle physics
Physics
Protons
Quantum theory
Radiation
Technology standards
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Summary:Results of the first experiment to search for the radiative decay mode of the free neutron are reported. The γ-spectrum was studied in the energy region from 35 keV to 100 keV in six Cs(Tl) scintillators, each set at an angle of 35° to, and shielded from, a central plastic scintillator electron detector. Triple coincidences were recorded with recoil protons detected in a micro-channel plate. A limit for the branching ratio BR < 6.9 × 10^sup -3^ (90 % confidence level) was obtained, which is greater that the theoretical prediction by not more than a few tenths of a percent. [PUBLICATION ABSTRACT]
ISSN:1044-677X