Open AccessTHE LIFETIME MEASUREMENT OF THE 28Si COMPOUND STATE OF 13.095 MeV BY THE BLOCKING EFFECT
Author(s) -
金卫国,
赵国庆,
邵其鋆,
任月华,
吴向坚,
周筑颖
Publication year - 1987
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.36.819
Subject(s) - excited state , blocking (statistics) , monte carlo method , radiation , atomic physics , materials science , calibration , energy (signal processing) , blocking effect , physics , optics , statistics , mathematics , quantum mechanics , psychology , developmental psychology
The methods for treating the Al single crystals have been improved and high quality crystals are obtained. The experiment of radiation damage in the Al crystals is carried out and the lifetime of the 28Si compound state of 13.095 MeV, excited by the 27Al(p,a)24 Mg resonant reaction at Ep = 1565keV, is measured. The lifetime, τ = 16.3±2.4 as, is deduced by comparison with the calibration curves calculated with Monte Carlo model and "analytical" methods. The corresponding energy level widtk, Γ = 40±6eV, is in good agreement with that reported in the literature.