Levels in sup 23 Na Excited by the sup 19 F( alpha , alpha ) sup 19 F, sup 19 F( alpha , gamma ) sup 23 Na and sup 19 F( alpha ,p) sup 22 Ne Reactions

摘要

Excitation functions have been measured at five angles for sup 19 F( alpha , alpha ) sup 19 F scattering process up to Esub( alpha )=3.7 MeV. The yield curves for the sup 19 F( alpha , gamma ) sup 23 Na, sup 19 F( alpha ,psub(0)) sup 22 Ne and sup 19 F( alpha ,psub(1) gamma ) sup 22 Ne reactions were also obtained in simultaneous measurements. Multi-level R-Matrix calculation was used to analyse the elastic scattering data yielding parameters for 16 resonances. Sixty resonances corresponding to levels in sup 23 Na were seen in the different reactions. A comparison of resonance energy and total width data is given. The sup 19 F( alpha , gamma ) sup 23 Na reaction below Esub( alpha )=2.3 MeV was studied also with thick target measurements. Decay schemes are given for two resonances. The alpha -particle strength is discussed. (Atomindex citation 15:032415)