Energy deposition and GDR emission in inelastic alpha particle scattering

✍ Scribed by G. Viesti; M. Lunardon; D. Fabris; G. Negbbia; M. Cinausero; E. Fioretto; D.R. Napoli; G. Prete; K. Hagel; J.B. Natowitz; R. Wada; P. Gonthier; Z. Majka; R. Alfarro; Y. Zhao; N. Mdeiwayeh; T. Ho

• Book ID: 104337230
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 427 KB
• Volume: 649
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(99)00055-x

✦ Synopsis

Neutron fold distributions measured for the reaction 2°gBi(c~,~') at 240 MeV have been analyzed with the help of Statistical Model calculations to determine the distribution of excitation energy in the primary target fragments as a function of the projectile energy loss, EL. Results show that the distributions in excitation energy feature a plateau which extends from the kinematical limit Ex=EL to very small excitations, suggesting a variety of interactions of the beam particles with the target nucleus. Requiring an additional coincidence with a light charged particle leads to selection of a significant higher average excitation energy. This effect is extrapolated to explore results of previous GDR decay measurements in the case of a ~°8pb target. Corrections of derived GDR parameters due to the partial transfer of excitation energy are suggested.