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Title: First spin-parity constraint of the 306 keV resonance in Cl 35 for nova nucleosynthesis

Something of particular interest in astrophysics is the 34 S ( p , γ ) 35 Cl reaction, which serves as a stepping stone in thermonuclear runaway reaction chains during a nova explosion. Although the isotopes involved are all stable, the reaction rate of this significant step is not well known, due to a lack of experimental spectroscopic information on states within the Gamow window above the proton separation threshold of 35 Cl . Furthermore, measurements of level spins and parities provide input for the calculation of resonance strengths, which ultimately determine the astrophysical reaction rate of the 34 S ( p , γ ) 35 Cl proton capture reaction. By performing the 37 Cl ( p , t ) 35 Cl reaction in normal kinematics at the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory, we have conducted a study of the region of astrophysical interest in 35 Cl , and have made the first-ever constraint on the spin and parity assignment for a level at 6677 ± 15 keV ( E r = 306 keV), inside the Gamow window for novae.
 [1] ;  [2] ;  [1] ;  [3] ;  [1] ;  [4] ;  [5] ;  [1] ;  [6] ;  [5] ;  [1] ;  [4] ;  [6] ;  [5] ;  [5] ;  [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Physics Division
  2. (United States). Dept. of Physics and Astronomy
  3. Tennessee Technological Univ., Cookeville, TN (United States). Dept. of Physics
  4. Rutgers Univ., New Brunswick, NJ (United States). Dept. of Physics and Astronomy
  5. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
  6. Oak Ridge Associated Univ., Oak Ridge, TN (United States)
Publication Date:
Grant/Contract Number:
AC05-00OR22725; FG52-08NA28552; FG02-96ER40955; FG02-96ER40983
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 4; Journal ID: ISSN 2469-9985
American Physical Society (APS)
Research Org:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26); National Science Foundation (NSF)
Country of Publication:
United States
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1353507