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Title: Isospin mixing reveals 30P(p, γ)31S resonance influencing nova nucleosynthesis

Abstract

Here, the thermonuclear 30P(p, γ)31S reaction rate is critical for modeling the final elemental and isotopic abundances of ONe nova nucleosynthesis, which affect the calibration of proposed nova thermometers and the identification of presolar nova grains, respectively. Unfortunately, the rate of this reaction is essentially unconstrained experimentally, because the strengths of key 31S proton capture resonance states are not known, largely due to uncertainties in their spins and parities. Using the β decay of 31Cl, we have observed the β-delayed γ decay of a 31S state at Ex = 6390.2(7) keV, with a 30P(p, γ)31S resonance energy of Er = 259.3(8) keV, in the middle of the 30P(p, γ)31S Gamow window for peak nova temperatures. This state exhibits isospin mixing with the nearby isobaric analog state at Ex = 6279.0(6) keV, giving it an unambiguous spin and parity of 3/2+ and making it an important l = 0 resonance for proton capture on 30P.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [3];  [4];  [1];  [1];  [1];  [1];  [3];  [5];  [1];  [2];  [6];  [1];  [1];  [7] more »;  [1];  [8];  [3];  [1] « less
  1. Michigan State Univ., East Lansing, MI (United States)
  2. Univ. of Notre Dame, Notre Dame, IN (United States)
  3. McMaster Univ., Hamilton, ON (Canada)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  5. Michigan State Univ., East Lansing, MI (United States); Univ. of Notre Dame, Notre Dame, IN (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. Michigan State Univ., East Lansing, MI (United States); Univ. of Southern Indiana, Evansville, IN (United States)
  8. Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1261528
Alternate Identifier(s):
OSTI ID: 1240763
Grant/Contract Number:  
AC05-00OR22725; NA0000979
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 116; Journal Issue: 10; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Bennett, M. B., Wrede, C., Brown, B. A., Liddick, S. N., Perez-Loureiro, D., Bardayan, D. W., Chen, A. A., Chipps, K. A., Fry, C., Glassman, B. E., Langer, C., Larson, N. R., McNeice, E. I., Meisel, Z., Ong, W., O'Malley, P. D., Pain, S. D., Prokop, C. J., Schatz, H., Schwartz, S. B., Suchyta, S., Thompson, P., Walters, M., and Xu, X. Isospin mixing reveals 30P(p, γ)31S resonance influencing nova nucleosynthesis. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.116.102502.
Bennett, M. B., Wrede, C., Brown, B. A., Liddick, S. N., Perez-Loureiro, D., Bardayan, D. W., Chen, A. A., Chipps, K. A., Fry, C., Glassman, B. E., Langer, C., Larson, N. R., McNeice, E. I., Meisel, Z., Ong, W., O'Malley, P. D., Pain, S. D., Prokop, C. J., Schatz, H., Schwartz, S. B., Suchyta, S., Thompson, P., Walters, M., & Xu, X. Isospin mixing reveals 30P(p, γ)31S resonance influencing nova nucleosynthesis. United States. https://doi.org/10.1103/PhysRevLett.116.102502
Bennett, M. B., Wrede, C., Brown, B. A., Liddick, S. N., Perez-Loureiro, D., Bardayan, D. W., Chen, A. A., Chipps, K. A., Fry, C., Glassman, B. E., Langer, C., Larson, N. R., McNeice, E. I., Meisel, Z., Ong, W., O'Malley, P. D., Pain, S. D., Prokop, C. J., Schatz, H., Schwartz, S. B., Suchyta, S., Thompson, P., Walters, M., and Xu, X. 2016. "Isospin mixing reveals 30P(p, γ)31S resonance influencing nova nucleosynthesis". United States. https://doi.org/10.1103/PhysRevLett.116.102502. https://www.osti.gov/servlets/purl/1261528.
@article{osti_1261528,
title = {Isospin mixing reveals 30P(p, γ)31S resonance influencing nova nucleosynthesis},
author = {Bennett, M. B. and Wrede, C. and Brown, B. A. and Liddick, S. N. and Perez-Loureiro, D. and Bardayan, D. W. and Chen, A. A. and Chipps, K. A. and Fry, C. and Glassman, B. E. and Langer, C. and Larson, N. R. and McNeice, E. I. and Meisel, Z. and Ong, W. and O'Malley, P. D. and Pain, S. D. and Prokop, C. J. and Schatz, H. and Schwartz, S. B. and Suchyta, S. and Thompson, P. and Walters, M. and Xu, X.},
abstractNote = {Here, the thermonuclear 30P(p, γ)31S reaction rate is critical for modeling the final elemental and isotopic abundances of ONe nova nucleosynthesis, which affect the calibration of proposed nova thermometers and the identification of presolar nova grains, respectively. Unfortunately, the rate of this reaction is essentially unconstrained experimentally, because the strengths of key 31S proton capture resonance states are not known, largely due to uncertainties in their spins and parities. Using the β decay of 31Cl, we have observed the β-delayed γ decay of a 31S state at Ex = 6390.2(7) keV, with a 30P(p, γ)31S resonance energy of Er = 259.3(8) keV, in the middle of the 30P(p, γ)31S Gamow window for peak nova temperatures. This state exhibits isospin mixing with the nearby isobaric analog state at Ex = 6279.0(6) keV, giving it an unambiguous spin and parity of 3/2+ and making it an important l = 0 resonance for proton capture on 30P.},
doi = {10.1103/PhysRevLett.116.102502},
url = {https://www.osti.gov/biblio/1261528}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 10,
volume = 116,
place = {United States},
year = {Tue Mar 08 00:00:00 EST 2016},
month = {Tue Mar 08 00:00:00 EST 2016}
}

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Works referenced in this record:

The Imprint of Nova Nucleosynthesis in Presolar Grains
journal, September 2004


Stellar Nucleosynthesis and the Isotopic Composition of Presolar Grains from Primitive Meteorites
journal, May 1998


Stardust in meteorites
journal, November 2011


Nucleosynthesis in classical novae
journal, October 2006


Astrophysical Reaction Rates From Statistical Model Calculations
journal, May 2000


The Ame2012 atomic mass evaluation
journal, December 2012


Nuclear Thermometers for Classical Novae
journal, December 2012


Astrophysically important S 31 states studied with the S 32 ( p , d ) S 31 reaction
journal, July 2007


New P 30 ( p , γ ) S 31 resonances and oxygen-neon nova nucleosynthesis
journal, November 2007


Evidence for the existence of the astrophysically important 6.40-MeV state of 31 S
journal, November 2013


One-nucleon pickup reactions on 32S: Experimental results and shell-model calculations
journal, August 1999


Key Resonances in the P 30 ( p , γ ) S 31 Gateway Reaction for the Production of Heavy Elements in ONe Novae
journal, June 2012


Isospin symmetry breaking at high spin in the mirror nuclei Ar 35 and Cl 35
journal, March 2007


Analog E 1 transitions and isospin mixing
journal, August 2008


Lifetime measurements in mirror nuclei 31 S and 31 P: A test for isospin mixing
journal, January 2011


Thermonuclear S 30 ( p , γ ) Cl 31 reaction in type I x-ray bursts
journal, April 2009


Excited states in 31S studied via beta decay of 31Cl
journal, January 2006


Shell-model studies of the astrophysical rapid-proton-capture reaction P 30 ( p , γ ) S 31
journal, June 2014


Nuclear Data Sheets for
journal, February 2013


Classical-Nova Contribution to the Milky Way’s Al 26 Abundance: Exit Channel of the Key Al 25 ( p , γ ) Si 26 Resonance
journal, December 2013


Commissioning the A1900 projectile fragment separator
journal, May 2003


Radio Frequency Fragment Separator at NSCL
journal, July 2009

  • Bazin, D.; Andreev, V.; Becerril, A.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 606, Issue 3
  • https://doi.org/10.1016/j.nima.2009.05.100

Digital data acquisition system implementation at the National Superconducting Cyclotron Laboratory
journal, March 2014

  • Prokop, C. J.; Liddick, S. N.; Abromeit, B. L.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 741
  • https://doi.org/10.1016/j.nima.2013.12.044

β decay of 32 Cl: Precision γ -ray spectroscopy and a measurement of isospin-symmetry breaking
journal, February 2012


Nuclear Data Sheets for A = 32
journal, September 2011


A peak-fitting and calibration program for Ge(Li) detectors
journal, December 1969


Split Isobaric Analog State in Ni 55 : Case of Strong Isospin Mixing
journal, December 2013


β decay of proton-rich nucleus Al 23 and astrophysical consequences
journal, October 2006


New “USD” Hamiltonians for the sd shell
journal, September 2006


sd -shell observables for the USDA and USDB Hamiltonians
journal, December 2008