Extensions of the direct-semidirect model for calculating the high energy component of fast-nucleon induced gamma spectra

Dietrich, F S

Lawrence Livermore National Laboratory

关键词: Protons;    Angular Distribution;    Radiations;    Capture;    74 Atomic And Molecular Physics;   

DOI  :  10.2172/15006436
RP-ID  :  UCRL-ID-139090
RP-ID  :  W-7405-ENG-48
RP-ID  :  15006436

美国|英语

来源: UNT Digital Library

【 摘 要 】

This section reviews extensions and variations of the direct-semidirect (DSD) model for understanding the high-energy component of gamma spectra resulting from radiative capture of fast nucleons; i.e., the part of the spectrum that is not amenable to standard statistical model (Hauser-Feshbach) treatments. We describe recent results on the extension of the DSD model to unbound final states, including comparison with proton and neutron capture data. The importance of including convective-current magnetic radiation to explain proton capture angular distributions in the 30 MeV region is shown. We conclude with a brief discussion of a model closely related to the DSD, the pure-resonance model.