Microscopic cluster model of α + α bremsstrahlung following a Siegert approach

3rd International Workshop on "State of the Art in Nuclear Cluster Physics"

Dohet-Eraly, J.^1,2 ; Baye, D.^2

TRIUMF, 4004 Wesbrook Mall, Vancouver

BC

V6T 2A3, Canada^1

Physique Quantique and Physique Nucléaire Théorique et Physique Mathematique, Université Libre de Bruxelles (ULB), C.P. 229, Brussels

B-1050, Belgium^2

关键词: Cluster models;    Meson exchange;    Photon energy;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/569/1/012074/pdf
DOI  :  10.1088/1742-6596/569/1/012074

来源: IOP

【 摘 要 】

We have recently developed a microscopic cluster model of nucleus-nucleus bremsstrahlung, which takes implicitly account of a part of the meson-exchange current effects, by applying an extension of the Siegert theorem valid for arbitrary photon energy. This model is applied to the α + α bremsstrahlung. The differences between the bremsstrahlung cross sections obtained in the non-Siegert and Siegert approaches are displayed and discussed. The theoretical bremsstrahlung cross sections are compared with experimental measurements. Whereas the agreement with quite old experimental data is fair, a rather important discrepancy between the theoretical results and the more recent experimental data is noticed. Some paths to investigate this disagreement are proposed.