New description of four-body breakup reaction

Details New description of four-body breakup reaction New description of four-body breakup reaction

2010-06-03

arxiv.org/abs/1006.0668v2

Phys.Rev.C82:051602,2010

Physics

Nuclear Physics

Nuclear Theory

5 pages, 5 figures

Scientific paper

10.1103/PhysRevC.82.051602

We present a novel method of smoothing discrete breakup cross sections calculated by the method of continuum-discretized coupled-channels. The method based on the complex scaling method is tested with success for $^{58}$Ni($d$, $pn$) reaction at 80 MeV as an example of a three-body breakup reaction, and applied to $^{12}$C($^6$He, $nn^4$He) reaction at 229.8 MeV as a typical example of a four-body breakup reaction. The new method does not need to derive continuum states of the projectile in order to evaluate the breakup cross section as a smooth factor of the excitation energy of the projectile. Fast convergence of the breakup cross section with respect to extending the modelspace is confirmed. For the $^6$He breakup cross section, the resonant component is separated from the non-resonant one.

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