Abstract
In their recent study Neelam, Shubhchintak, and Chatterjee have claimed that “it would certainly be useful to perform a Coulomb dissociation experiment to find the low-energy capture cross section for the reaction” (). However, it is obvious that a Coulomb dissociation experiment cannot constrain this capture cross section because the dominating branchings of the capture reaction lead to excited states in , which do not contribute in a Coulomb dissociation experiment. An estimate of the total () cross section from Coulomb dissociation of requires a precise knowledge of the -ray branchings in the capture reaction. Surprisingly, the calculation of Neelam, Shubhchintak, and Chatterjee predicts a strongly energy-dependent ground-state branching of the order of 0.05% to 0.6% at energies between 100 and 500 keV, which is almost 2 orders of magnitude below calculations in the direct capture model. Additionally, this calculation of Neelam, Shubhchintak, and Chatterjee deviates significantly from the expected energy dependence for -wave capture.
- Received 6 November 2015
DOI:https://doi.org/10.1103/PhysRevC.93.059801
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