Abstract
The observation of secondary -rays provides an alternative method of measuring cross sections that populate excited final states in nuclear reactions. The angular distributions of these -rays also provide information on the underlying reaction mechanism. Despite the large number of data of this type in the literature, publicly available -matrix codes do not have the ability to calculate these types of angular distributions. In this paper, the mathematical formalism derived by C. R. Brune and R. J. deBoer [Phys. Rev. C 102, 024628 (2020)] is implemented in the -matrix code azure2 and calculations are compared with previous data from the literature for the reaction. In addition, new measurements, made at the University of Notre Dame Nuclear Science Laboratory using the Hybrid Array of Gamma Ray Detectors (HAGRiD), are reported that span the energy range from MeV to . Excellent agreement between the data and the phenomenological fit is obtained up to the limit of the previous fit at and the -matrix fit is extended from MeV up to MeV, where and reactions are fit simultaneously for the first time. An excellent reproduction of the and data is achieved, but inconsistencies and difficulty in fitting other data are encountered and discussed.
8 More- Received 12 June 2020
- Revised 11 May 2021
- Accepted 1 June 2021
DOI:https://doi.org/10.1103/PhysRevC.103.065801
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