Spectroscopic study of the radionuclide 21Na for the astrophysical 17F(α,p)20Ne reaction rate

Cha, S. M.; Chae, K. Y.; Ahn, S.; Bardayan, D. W.; Chipps, Kelly A.; Cizewski, J. A.; Howard, M. E.; Kozub, R. L.; Kwak, K.; Manning, B.; Matos, M.; O'Malley, P. D.; Pain, Steven D.; Peters, William A.; Pittman, Stephen T.; Ratkiewicz, A.; Smith, Michael Scott; Strauss, S.

doi:10.1103/physrevc.96.025810

Title: Spectroscopic study of the radionuclide ²¹Na for the astrophysical ¹⁷F(α,p)²⁰Ne reaction rate

Journal Article · 30 August 2017 · Physical Review. C

DOI: https://doi.org/10.1103/physrevc.96.025810 · OSTI ID:1471870

Cha, S. M. ^[1]; Chae, K. Y. ^[1]; Ahn, S. ^[2]; Bardayan, D. W. ^[3];

^[4]; Cizewski, J. A. ^[5]; Howard, M. E. ^[5]; Kozub, R. L. ^[6]; Kwak, K. ^[7]; Manning, B. ^[5]; Matos, M. ^[8]; O'Malley, P. D. ^[5];

^[9]; Peters, William A. ^[10]; Pittman, Stephen T. ^[9]; Ratkiewicz, A. ^[5];

^[9]; Strauss, S. ^[5]

Sungkyunkwan Univ., Suwon (Republic of Korea)
Univ. of Tennessee, Knoxville, TN (United States)
Univ. of Notre Dame, IN (United States)
Colorado School of Mines, Golden, CO (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Rutgers Univ., New Brunswick, NJ (United States)
Tennessee Technological Univ., Cookeville, TN (United States)
Ulsan National Institute of Science and Technology (UNIST), Ulsan (Korea, Republic of)
Louisiana State Univ., Baton Rouge, LA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Oak Ridge Associated Univ., Oak Ridge, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

The ²⁴Mg(p,α)²¹Na reaction was measured at the Holifield Radioactive Ion Beam Facility of the Oak Ridge National Laboratory to study the spectroscopy of the radionuclide ²¹Na. A 31-MeV proton beam from the 25 MV tandem accelerator bombarded isotopically enriched ²⁴Mg targets. Recoiling ⁴He particles were identified by an annular silicon strip detector array. Two energy levels at E_x=6.594 and 7.132 MeV were observed for the first time. By comparing the experimentally obtained angular distributions and distorted wave Born approximation calculations, the spins and parities of ²¹Na energy levels were constrained. The astrophysically-important ¹⁷F(α,p)²⁰Ne reaction rate was also calculated for the first time using resonance parameters for 12 energy levels.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC05-00OR22725; FG52-08NA28552; FG02-96ER40955; FG02-96ER40983

OSTI ID:: 1471870

Alternate ID(s):: OSTI ID: 1377980

Journal Information:: Physical Review. C, Journal Name: Physical Review. C Journal Issue: 2 Vol. 96; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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