Abstract
Although the reaction \({}^{11}{\hbox {B}}(p,3\alpha )\) has been widely studied for its relevance in material science, nuclear structure, nuclear astrophysics, and fusion science, significant discrepancies exist in the data. For the channel proceeding via the ground state of \({}^{8}\hbox {Be}\), the available cross-section data shows large discrepancies of both normalization and energy scale. The present paper reports on a measurement of the \({}^{11}{\hbox {B}}(p,\alpha _{0})\) cross-section using an array of large area segmented silicon detectors and low beam current on an enriched thin target with the aim of resolving the discrepancies amongst previous measurements.
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Data Availability Statement
This manuscript has no associated data or the data will not be deposited [Author’s comment: Tabulated cross sections given in table 1.]
Notes
Eckert and Ziegler source no. 1652-45. Total uncertainty on the activity 3.1%.
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Acknowledgements
We would like to thank Folmer Lyckegaard for manufacturing the target. We also acknowledge financial support from the European Research Council under ERC starting grant LOBENA, No. 307447. OSK acknowledges support from the Villum Foundation through Project No. 10117. MM acknowledges support from the Nustar Collaboration.
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Munch, M., Kirsebom, O.S., Swartz, J.A. et al. Resolving the \({}^{11}\hbox {B}{(p,\alpha _{0})}\) cross-section discrepancies between 0.5 and 3.5 MeV. Eur. Phys. J. A 56, 17 (2020). https://doi.org/10.1140/epja/s10050-019-00016-8
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DOI: https://doi.org/10.1140/epja/s10050-019-00016-8