Open AccessSpectroscopic study of the radionuclide Na21 for the astrophysical F17(α,p)Ne20 reaction rate
Author(s) -
S. M.,
K. Y. Chae,
SungHoon Ahn,
D. W. Bardayan,
K. A. Chipps,
J. A. Cizewski,
M. E. Howard,
R. L. Kozub,
Kyujin Kwak,
B. Manning,
M. Matoš,
P. D. O’Malley,
S. D. Pain,
William A. Peters,
S. T. Pittman,
A. Ratkiewicz,
M. S. Smith,
S. Strauss
Publication year - 2017
Publication title -
physical review. c
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.679
H-Index - 235
eISSN - 2469-9993
pISSN - 2469-9985
DOI - 10.1103/physrevc.96.025810
Subject(s) - physics , atomic physics , spins , nuclear reaction , proton , energy (signal processing) , beam energy , tandem accelerator , nuclear physics , spectroscopy , beam (structure) , deuterium , ion , optics , quantum mechanics , condensed matter physics
The Mg-24(p,alpha)Na-21 reaction was measured at the Holifield Radioactive Ion Beam Facility of the Oak Ridge National Laboratory to study the spectroscopy of the radionuclide Na-21. A 31-MeV proton beam from the 25 MV tandem accelerator bombarded isotopically enriched Mg-24 targets. Recoiling He-4 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 Na-21 energy levels were constrained. The astrophysicallyi-mportant F-17(alpha, p)Ne-20 reaction rate was also calculated for the first time using resonance parameters for 12 energy levels