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

Abstract

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.

Authors:
 [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:
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)
OSTI Identifier:
1354658
Alternate Identifier(s):
OSTI ID: 1353507
Grant/Contract Number:  
AC05-00OR22725; FG52-08NA28552; FG02-96ER40955; FG02-96ER40983
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 95; Journal Issue: 4; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Chipps, K. A., Rutgers Univ., New Brunswick, NJ, Pain, S. D., Kozub, R. L., Bardayan, D. W., Cizewski, J. A., Chae, K. Y., Liang, J. F., Matei, C., Moazen, B. H., Nesaraja, C. D., O'Malley, P. D., Peters, W. A., Pittman, S. T., Schmitt, K. T., and Smith, M. S. First spin-parity constraint of the 306 keV resonance in Cl35 for nova nucleosynthesis. United States: N. p., 2017. Web. doi:10.1103/PhysRevC.95.045808.
Chipps, K. A., Rutgers Univ., New Brunswick, NJ, Pain, S. D., Kozub, R. L., Bardayan, D. W., Cizewski, J. A., Chae, K. Y., Liang, J. F., Matei, C., Moazen, B. H., Nesaraja, C. D., O'Malley, P. D., Peters, W. A., Pittman, S. T., Schmitt, K. T., & Smith, M. S. First spin-parity constraint of the 306 keV resonance in Cl35 for nova nucleosynthesis. United States. doi:10.1103/PhysRevC.95.045808.
Chipps, K. A., Rutgers Univ., New Brunswick, NJ, Pain, S. D., Kozub, R. L., Bardayan, D. W., Cizewski, J. A., Chae, K. Y., Liang, J. F., Matei, C., Moazen, B. H., Nesaraja, C. D., O'Malley, P. D., Peters, W. A., Pittman, S. T., Schmitt, K. T., and Smith, M. S. Fri . "First spin-parity constraint of the 306 keV resonance in Cl35 for nova nucleosynthesis". United States. doi:10.1103/PhysRevC.95.045808. https://www.osti.gov/servlets/purl/1354658.
@article{osti_1354658,
title = {First spin-parity constraint of the 306 keV resonance in Cl35 for nova nucleosynthesis},
author = {Chipps, K. A. and Rutgers Univ., New Brunswick, NJ and Pain, S. D. and Kozub, R. L. and Bardayan, D. W. and Cizewski, J. A. and Chae, K. Y. and Liang, J. F. and Matei, C. and Moazen, B. H. and Nesaraja, C. D. and O'Malley, P. D. and Peters, W. A. and Pittman, S. T. and Schmitt, K. T. and Smith, M. S.},
abstractNote = {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.},
doi = {10.1103/PhysRevC.95.045808},
journal = {Physical Review C},
number = 4,
volume = 95,
place = {United States},
year = {Fri Apr 28 00:00:00 EDT 2017},
month = {Fri Apr 28 00:00:00 EDT 2017}
}

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