ISSN:
1434-601X
Schlagwort(e):
24.90+d
;
25.55.−e
;
25.70.−z
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract The continua excited by inelastic scattering of 26 MeV/Aα- and6Li-particles from28Si have been studied at forward angles by coincident detection ofγ-rays in final nuclei after particle decay. While the coincident γ-ray spectra in6Li-induced reactions show only transitions in massA=24, 27 and 28 nuclei, in theα-induced reactionsγ-transitions in mass 20 to 28 nuclei were observed. Inelastic6Li-scattering with energy losses between 30 and 80 MeV predominantly leads toγ-transitions in27Si and27Al. We interpret this as due to a dominant direct one-nucleon removal process producing the characteristic “triangular” shapes of the inclusive inelastic6Li spectra.6Li-induced reactions on27Al show a corresponding behaviour. The typical flatα-spectra result from additional truly inelastic processes which lead to highly excited states in the target nuclei and subsequent evaporation of nucleons andα-particles. This is supported by the measuredγ-multiplicities and by means of Hauser-Feshbach calculations which allow to deduce that part of the inelasticα-continuum which decays by particle evaporation.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01289548
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