Study of the Proton Pairing Vibrations as an Example of Elementary Nuclear Modes

摘要

A study of the proton pairing vibrations as an example of elementary nuclear modes is discussed. The ( exp 3 He,n) reaction has been used to study 0 exp + proton pair vibration modes for nuclei at Z = 40, 50 and 82. Evidence is presented that Z = 38 is a better shell closure than Z = 40 but not at all perfect. For Z = 50 and 82 correction must be made for the substantial particle hole interaction to obtain agreement with the pairing vibration model. The interaction with neutron pairing quanta is rather small in all cases. (ERA citation 03:020303)