Search for Radiative β-Decay of the Free Neutron.

Autor: Byrne J; Department of Physics and Astronomy, University of Sussex, Brighton BN1 9QH, U.K., Khafizov RU; RSC Kurchatov Institute, 127562 Moscow, Russia., Mostovoi YA; RSC Kurchatov Institute, 127562 Moscow, Russia., Rozhnov O; Petersburg Nuclear Physics Institute, 188350 Gatchina, Russia., Solovei VA; Petersburg Nuclear Physics Institute, 188350 Gatchina, Russia., Beck M; Katholicke Universiteit Leuven, B-3001 Leuven, Belgium., Kozlov VU; Katholicke Universiteit Leuven, B-3001 Leuven, Belgium., Severijns N; Katholicke Universiteit Leuven, B-3001 Leuven, Belgium.
Jazyk: angličtina
Zdroj: Journal of research of the National Institute of Standards and Technology [J Res Natl Inst Stand Technol] 2005 Aug 01; Vol. 110 (4), pp. 415-20. Date of Electronic Publication: 2005 Aug 01 (Print Publication: 2005).
DOI: 10.6028/jres.110.063
Abstrakt: 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(-3) (90 % confidence level) was obtained, which is greater that the theoretical prediction by not more than a few tenths of a percent.
Databáze: MEDLINE