Cross-section measurement of the 82Kr ($p,γ$)83Rb reaction in inverse kinematics

• Published in: Physical review. C 2023-03, Vol.107 (3)
• Main Authors: Tsantiri, A., Palmisano-Kyle, A., Spyrou, A., Mohr, P., Berg, H. C., DeYoung, P. A., Dombos, A. C., Gastis, Panagiotis, Good, E. C., Harris, C. M., Liddick, S. N., Lyons, S. M., Olivas-Gomez, O., Owens-Fryar, G., Pereira, J., Richard, A. L., Simon, A., Smith, M. K., Zegers, R. G. T.
• Format: Article
• Language: English
• Subjects: A ≤ 89; H & He induced nuclear reactions; Nuclear astrophysics; NUCLEAR PHYSICS AND RADIATION PHYSICS; Nuclear reactions; Nucleosynthesis in explosive environments; Photonuclear reactions; Radiation detectors
• ISSN: 2469-9985
• DOI: 10.1103/PhysRevC.107.035808

The total cross section of the 82Kr(p,γ)83Rb reaction was measured for the first time at effective center-of-mass energies between 2.4 and 3.0 MeV, within the relevant Gamow window for the astrophysical γ process. The experiment took place at the National Superconducting Cyclotron Laboratory at Michigan State University using the ReA facility. A 82Kr beam was directed onto a hydrogen gas cell located at the center of the Summing NaI(Tl) (SuN) detector. Here, the obtained spectra were analyzed using the γ-summing technique and the extracted cross section was compared to standard statistical model calculations using the non-smoker and talys codes. The comparison indicates that standard statistical model calculations tend to overproduce the cross section of the 82Kr(p,γ)83Rb reaction relative to the experimentally measured values. Furthermore, the experimental data were used to provide additional constraints on the nuclear level density and the γ-ray strength function used in the statistical model calculations.