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Title: Cross-section measurements to low-lying excited final states in the 24M(α,p)27Al*(γ) reaction as an energy source for x-ray bursts

Abstract

Energy production in Type Ia x-ray bursts depends on a number of nuclear reactions that become efficient in a hot environment (up to 2 GK). Model sensitivity studies have been performed in an effort to better identify the reactions that have the largest effect, but these efforts are hampered by the high level of complexity of the astrophysical model and large nuclear physics uncertainties. In a recent study, the 24Mg(α,p)27Al reaction was found to significantly affect the energy generation in x-ray bursts. This manuscript reports the first study of the 24Mg(α,p1,2γ)27Al reaction at energies relevant for x-ray bursts. In conclusion, the branches to the 27Al excited states increase to a small degree the estimates of the total astrophysical 24Mg(α,p)27Al reaction rate.

Authors:
ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1];  [2];  [3]; ORCiD logo [4]; ORCiD logo [1];  [3]; ORCiD logo [3];  [3];  [1]; ORCiD logo [1];  [5];  [1]; ORCiD logo [6];  [7];  [3];  [1] more »;  [1] « less
  1. University of Notre Dame, IN (United States)
  2. Ohio University, Athens, OH (United States)
  3. University of Tennessee, Knoxville, TN (United States)
  4. Sunkyunkwan University, Suwon (South Korea)
  5. Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
  6. University of Notre Dame, IN (United States); KU Leuven (Belgium)
  7. University of Tennessee, Knoxville, TN (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Univ. of Notre Dame, IN (United States); Univ. of Tennessee, Knoxville, TN (United States); Ohio Univ., Athens, OH (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1668347
Grant/Contract Number:  
FG02-96ER40963; FG02-88ER40387; NA0003883; NA000213
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 102; Journal Issue: 3; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Explosive burning; H & He induced nuclear reactions; Nuclear astrophysics; Nuclear physics of explosive environments

Citation Formats

Ahn, T., Aguilar, S., deBoer, R. J., Bardayan, D. W., Boeltzig, A., Brune, C. R., Burcher, S. P., Chae, K. Y., Henderson, S. L., Grzywacz, R. K., Jones, K. L., Kovoor, J. M., Macon, K. T., Manukyan, K., Mosby, S., O'Malley, P. D., Renaud, M., Smith, K., Thornsberry, C., Vande Kolk, B., and Wiescher, M. Cross-section measurements to low-lying excited final states in the 24M(α,p)27Al*(γ) reaction as an energy source for x-ray bursts. United States: N. p., 2020. Web. doi:10.1103/physrevc.102.035805.
Ahn, T., Aguilar, S., deBoer, R. J., Bardayan, D. W., Boeltzig, A., Brune, C. R., Burcher, S. P., Chae, K. Y., Henderson, S. L., Grzywacz, R. K., Jones, K. L., Kovoor, J. M., Macon, K. T., Manukyan, K., Mosby, S., O'Malley, P. D., Renaud, M., Smith, K., Thornsberry, C., Vande Kolk, B., & Wiescher, M. Cross-section measurements to low-lying excited final states in the 24M(α,p)27Al*(γ) reaction as an energy source for x-ray bursts. United States. doi:10.1103/physrevc.102.035805.
Ahn, T., Aguilar, S., deBoer, R. J., Bardayan, D. W., Boeltzig, A., Brune, C. R., Burcher, S. P., Chae, K. Y., Henderson, S. L., Grzywacz, R. K., Jones, K. L., Kovoor, J. M., Macon, K. T., Manukyan, K., Mosby, S., O'Malley, P. D., Renaud, M., Smith, K., Thornsberry, C., Vande Kolk, B., and Wiescher, M. Tue . "Cross-section measurements to low-lying excited final states in the 24M(α,p)27Al*(γ) reaction as an energy source for x-ray bursts". United States. doi:10.1103/physrevc.102.035805.
@article{osti_1668347,
title = {Cross-section measurements to low-lying excited final states in the 24M(α,p)27Al*(γ) reaction as an energy source for x-ray bursts},
author = {Ahn, T. and Aguilar, S. and deBoer, R. J. and Bardayan, D. W. and Boeltzig, A. and Brune, C. R. and Burcher, S. P. and Chae, K. Y. and Henderson, S. L. and Grzywacz, R. K. and Jones, K. L. and Kovoor, J. M. and Macon, K. T. and Manukyan, K. and Mosby, S. and O'Malley, P. D. and Renaud, M. and Smith, K. and Thornsberry, C. and Vande Kolk, B. and Wiescher, M.},
abstractNote = {Energy production in Type Ia x-ray bursts depends on a number of nuclear reactions that become efficient in a hot environment (up to 2 GK). Model sensitivity studies have been performed in an effort to better identify the reactions that have the largest effect, but these efforts are hampered by the high level of complexity of the astrophysical model and large nuclear physics uncertainties. In a recent study, the 24Mg(α,p)27Al reaction was found to significantly affect the energy generation in x-ray bursts. This manuscript reports the first study of the 24Mg(α,p1,2γ)27Al reaction at energies relevant for x-ray bursts. In conclusion, the branches to the 27Al excited states increase to a small degree the estimates of the total astrophysical 24Mg(α,p)27Al reaction rate.},
doi = {10.1103/physrevc.102.035805},
journal = {Physical Review C},
number = 3,
volume = 102,
place = {United States},
year = {2020},
month = {9}
}

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