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Title: First proton-transfer study of 18F + p resonances relevant for novae

Abstract

The 18F(p, )15O reaction is the predominant destruction mechanism in novae of the radionuclide 18F, a target of -ray observatories. Thus, its rate is important for understanding 18F production in novae. We have studied resonances in the 18F+p system by making a measurement of a protontransfer reaction 18F(d,n). We have observed 15 19Ne levels, 5 of which are below the proton threshold, including a subthreshold state, which has significant lp=0 strength. Our data provide a direct determination of the spectroscopic strength of these states and new constraints on their spins and parities, thereby resolving a controversy, which involves the 8- and 38- keV resonances. The 18F(p, )15O reaction rate is reevaluated, which takes the subthreshold resonance and other new information determined in this experiment into account.

Authors:
 [1];  [2];  [2];  [3];  [4];  [4];  [5];  [3];  [3];  [6];  [7];  [5];  [4];  [3];  [4];  [2];  [6];  [7];  [7];  [2] more »;  [6];  [8];  [3] « less
  1. Ohio University, Athens
  2. ORNL
  3. Ohio University
  4. University of Tennessee, Knoxville (UTK)
  5. Colorado School of Mines, Golden
  6. Rutgers University
  7. Tennessee Technological University
  8. University of North Carolina, Chapel Hill
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Holifield Radioactive Ion Beam Facility
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1019369
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 83; Journal Issue: 5; Journal ID: ISSN 0556--2813
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; NOVAE; PRODUCTION; PROTONS; RADIOISOTOPES; REACTION KINETICS; RESONANCE; TARGETS

Citation Formats

Adekola, A. S., Bardayan, Daniel W, Blackmon, Jeff C, Brune, C., Chae, K. Y., Domizioli, C., Greife, U., Heinen, Z., Hornish, M., Jones, K. L., Kozub, R. L., Livesay, R. J., Ma, Z., Massey, T., Moazen, Brian, Nesaraja, Caroline D, Pain, S. D., ShrinerJr., J. F., Smith, N. D., Smith, Michael Scott, Thomas, J. S., Visser, D. W., and Voinov, A. First proton-transfer study of 18F + p resonances relevant for novae. United States: N. p., 2011. Web. doi:10.1103/PhysRevC.83.052801.
Adekola, A. S., Bardayan, Daniel W, Blackmon, Jeff C, Brune, C., Chae, K. Y., Domizioli, C., Greife, U., Heinen, Z., Hornish, M., Jones, K. L., Kozub, R. L., Livesay, R. J., Ma, Z., Massey, T., Moazen, Brian, Nesaraja, Caroline D, Pain, S. D., ShrinerJr., J. F., Smith, N. D., Smith, Michael Scott, Thomas, J. S., Visser, D. W., & Voinov, A. First proton-transfer study of 18F + p resonances relevant for novae. United States. doi:10.1103/PhysRevC.83.052801.
Adekola, A. S., Bardayan, Daniel W, Blackmon, Jeff C, Brune, C., Chae, K. Y., Domizioli, C., Greife, U., Heinen, Z., Hornish, M., Jones, K. L., Kozub, R. L., Livesay, R. J., Ma, Z., Massey, T., Moazen, Brian, Nesaraja, Caroline D, Pain, S. D., ShrinerJr., J. F., Smith, N. D., Smith, Michael Scott, Thomas, J. S., Visser, D. W., and Voinov, A. Sat . "First proton-transfer study of 18F + p resonances relevant for novae". United States. doi:10.1103/PhysRevC.83.052801.
@article{osti_1019369,
title = {First proton-transfer study of 18F + p resonances relevant for novae},
author = {Adekola, A. S. and Bardayan, Daniel W and Blackmon, Jeff C and Brune, C. and Chae, K. Y. and Domizioli, C. and Greife, U. and Heinen, Z. and Hornish, M. and Jones, K. L. and Kozub, R. L. and Livesay, R. J. and Ma, Z. and Massey, T. and Moazen, Brian and Nesaraja, Caroline D and Pain, S. D. and ShrinerJr., J. F. and Smith, N. D. and Smith, Michael Scott and Thomas, J. S. and Visser, D. W. and Voinov, A.},
abstractNote = {The 18F(p, )15O reaction is the predominant destruction mechanism in novae of the radionuclide 18F, a target of -ray observatories. Thus, its rate is important for understanding 18F production in novae. We have studied resonances in the 18F+p system by making a measurement of a protontransfer reaction 18F(d,n). We have observed 15 19Ne levels, 5 of which are below the proton threshold, including a subthreshold state, which has significant lp=0 strength. Our data provide a direct determination of the spectroscopic strength of these states and new constraints on their spins and parities, thereby resolving a controversy, which involves the 8- and 38- keV resonances. The 18F(p, )15O reaction rate is reevaluated, which takes the subthreshold resonance and other new information determined in this experiment into account.},
doi = {10.1103/PhysRevC.83.052801},
journal = {Physical Review C},
issn = {0556--2813},
number = 5,
volume = 83,
place = {United States},
year = {2011},
month = {1}
}