Excitation and decay of electric giant resonances in the 40Ca(e,e'x) and 40Ca(p,p'x) reactions

von Neumann-Cosel P.; Diesener H.; Helm U.; Herbert G.; Huck V.; Richter A.; Schrieder G.; Stascheck A.; Stiller A.; Ryckebusch J.; Carter J.; Cowley A.A.; Fearick R.W.; Lawrie J.J.; Mills S.J.; Newman R.T.; Pilcher J.V.; Smit F.D.; Vilakazi Z.Z.; Whittal D.M.

Excitation and decay of electric giant resonances in the 40Ca(e,e'x) and 40Ca(p,p'x) reactions

Date

1994

Authors

von Neumann-Cosel P.

Diesener H.

Helm U.

Herbert G.

Huck V.

Richter A.

Schrieder G.

Stascheck A.

Stiller A.

Ryckebusch J.

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Abstract

The excitation and decay of electric giant resonances in 40Ca in the excitation energy range Ex = 8 - 26 MeV was investigated with the (e,e'x; x=p,α) reaction for momentum transfers from 0.25 to 0.66 fm-1. The angular correlations of proton decay into low-lying states of 39K are successfully described by a RPA continuum approach emphasizing the importance of multistep contributions. The dominant reaction mechanism is extracted from a comparison of the branching ratios into resolved final channels with statistical model calculations and a fluctuation analysis. First results of a 40Ca(p,p'x) experiment covering the same 40Ca excitation region permit insight into the fine structure of the GQR and its decay. © 1994.

Citation

Nuclear Physics, Section A
569
02-Jan

URI

http://hdl.handle.net/10019.1/12339

Collections

Stellenbosch University - Scopus Publications

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