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Sensitivity of 8B breakup cross section to projectile structure in CDCC calculations

N. C. Summers·F. M. Nunes
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Abstract

Given the Astrophysical interest of $^7$Be$(p,γ)^8$B, there have been several experiments applying the Coulomb dissociation method for extracting the capture rate. Measurements at Michigan State are dominated by $E1$ contributions but have a small $E2$ component. On the other hand, a lower energy measurement at Notre Dame has a much stronger $E2$ contribution. The expectation was that the two measurements would tie down the $E2$ and thus allow for an accurate extraction of the $E1$ relevant for the capture process. The aim of this brief report is to show that the $E2$ factor in breakup reactions does not translate into a scaling of the $E2$ contribution in the corresponding capture reaction. We show that changes to the $^8$B single particle parameters, which are directly related to the $E2$ component in the capture reaction, do not effect the corresponding breakup reactions, using the present reaction theory.

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N. C. Summers, F. M. Nunes. 2005-03-15. Sensitivity of 8B breakup cross section to projectile structure in CDCC calculations. https://doi.org/10.1088/0954-3899%2F31%2F12%2F005

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