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

Abstract

The {sup 18}F(p,{alpha}){sup 15}O reaction is the predominant destruction mechanism in novae of the radionuclide {sup 18}F, a target of {gamma}-ray observatories. Thus, its rate is important for understanding {sup 18}F production in novae. We have studied resonances in the {sup 18}F+p system by making a measurement of a proton-transfer reaction {sup 18}F(d,n). We have observed 15 {sup 19}Ne levels, 5 of which are below the proton threshold, including a subthreshold state, which has significant l{sub p}=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 {sup 18}F(p,{alpha}){sup 15}O reaction rate is reevaluated, which takes the subthreshold resonance and other new information determined in this experiment into account.

Authors:
 [1];  [2]; ; ; ;  [3]; ; ; ; ;  [1]; ; ; ;  [4]; ;  [5]; ; ;  [6] more »;  [7] « less
  1. Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701 (United States)
  2. (United States)
  3. Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)
  4. Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States)
  5. Department of Physics, Colorado School of Mines, Golden, Colorado 80401 (United States)
  6. Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019 (United States)
  7. Department of Physics, Tennessee Technological University, Cookeville, Tennessee 38505 (United States)
Publication Date:
OSTI Identifier:
21502442
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 83; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.83.052801; (c) 2011 American Institute of Physics; Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ALPHA DECAY; FLUORINE 18 TARGET; GAMMA RADIATION; KEV RANGE; NEON 19; NOVAE; OXYGEN 15; PARITY; PROTON REACTIONS; PROTONS; REACTION KINETICS; RESONANCE; SPIN; TRANSFER REACTIONS; ANGULAR MOMENTUM; BARYON REACTIONS; BARYONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BINARY STARS; CHARGED-PARTICLE REACTIONS; DECAY; DIRECT REACTIONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY RANGE; ERUPTIVE VARIABLE STARS; EVEN-ODD NUCLEI; FERMIONS; HADRON REACTIONS; HADRONS; IONIZING RADIATIONS; ISOTOPES; KINETICS; LIGHT NUCLEI; MINUTES LIVING RADIOISOTOPES; NEON ISOTOPES; NUCLEAR DECAY; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; NUCLEONS; OXYGEN ISOTOPES; PARTICLE PROPERTIES; RADIATIONS; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; STARS; TARGETS; VARIABLE STARS

Citation Formats

Adekola, A. S., Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019, Bardayan, D. W., Blackmon, J. C., Nesaraja, C. D., Smith, M. S., Brune, C. R., Heinen, Z., Hornish, M. J., Massey, T. N., Voinov, A. V., Chae, K. Y., Domizioli, C., Ma, Z., Moazen, B., Greife, U., Livesay, R. J., Jones, K. L., Pain, S. D., Thomas, J. S., and Kozub, R. L. First proton-transfer study of {sup 18}F+p resonances relevant for novae. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.83.052801.
Adekola, A. S., Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019, Bardayan, D. W., Blackmon, J. C., Nesaraja, C. D., Smith, M. S., Brune, C. R., Heinen, Z., Hornish, M. J., Massey, T. N., Voinov, A. V., Chae, K. Y., Domizioli, C., Ma, Z., Moazen, B., Greife, U., Livesay, R. J., Jones, K. L., Pain, S. D., Thomas, J. S., & Kozub, R. L. First proton-transfer study of {sup 18}F+p resonances relevant for novae. United States. doi:10.1103/PHYSREVC.83.052801.
Adekola, A. S., Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019, Bardayan, D. W., Blackmon, J. C., Nesaraja, C. D., Smith, M. S., Brune, C. R., Heinen, Z., Hornish, M. J., Massey, T. N., Voinov, A. V., Chae, K. Y., Domizioli, C., Ma, Z., Moazen, B., Greife, U., Livesay, R. J., Jones, K. L., Pain, S. D., Thomas, J. S., and Kozub, R. L. Sun . "First proton-transfer study of {sup 18}F+p resonances relevant for novae". United States. doi:10.1103/PHYSREVC.83.052801.
@article{osti_21502442,
title = {First proton-transfer study of {sup 18}F+p resonances relevant for novae},
author = {Adekola, A. S. and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019 and Bardayan, D. W. and Blackmon, J. C. and Nesaraja, C. D. and Smith, M. S. and Brune, C. R. and Heinen, Z. and Hornish, M. J. and Massey, T. N. and Voinov, A. V. and Chae, K. Y. and Domizioli, C. and Ma, Z. and Moazen, B. and Greife, U. and Livesay, R. J. and Jones, K. L. and Pain, S. D. and Thomas, J. S. and Kozub, R. L.},
abstractNote = {The {sup 18}F(p,{alpha}){sup 15}O reaction is the predominant destruction mechanism in novae of the radionuclide {sup 18}F, a target of {gamma}-ray observatories. Thus, its rate is important for understanding {sup 18}F production in novae. We have studied resonances in the {sup 18}F+p system by making a measurement of a proton-transfer reaction {sup 18}F(d,n). We have observed 15 {sup 19}Ne levels, 5 of which are below the proton threshold, including a subthreshold state, which has significant l{sub p}=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 {sup 18}F(p,{alpha}){sup 15}O 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, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 83,
place = {United States},
year = {2011},
month = {5}
}