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Title: Level structure of {sup 21}Mg: Nuclear and astrophysical implications

Abstract

Resonant elastic scattering of a radioactive {sup 20}Na beam incident upon protons in a polyethylene target has been used to probe the level structure of {sup 21}Mg above the proton decay threshold. Three states have been observed, and their properties deduced through analysis based on the R-matrix formalism. The results improve and extend previous studies of this nucleus. An estimate of the {sup 20}Na(p,{gamma}){sup 21}Mg reaction rate, including these new data, suggests this reaction will not play a significant role in explosive hydrogen burning in astrophysical sites such as novae and x-ray bursts.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ;  [1];  [2];  [2];  [3];  [4]
  1. School of Physics, University of Edinburgh, Mayfield Road, Edinburgh, EH9 3JZ (United Kingdom)
  2. (Canada)
  3. (United Kingdom)
  4. (United States)
Publication Date:
OSTI Identifier:
20771343
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 73; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.73.034320; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CAPTURE; ELASTIC SCATTERING; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; HYDROGEN BURNING; MAGNESIUM 21; NOVAE; NUCLEAR DECAY; NUCLEAR REACTION KINETICS; POLYETHYLENES; PROTON REACTIONS; PROTON-NUCLEON INTERACTIONS; PROTONS; R MATRIX; RESCATTERING; RESONANCE SCATTERING; SODIUM 20; X RADIATION

Citation Formats

St Murphy, A.J., Aliotta, M., Davinson, T., Ruiz, C., Woods, P.J., D'Auria, J.M., Buchmann, L., Chen, A.A., Laird, A.M., Sarazin, F., Walden, P., Fulton, B.R., Pearson, J.E., Brown, B.A., Simon Fraser University, Burnaby, British Columbia V5A 1S6, TRIUMF, Vancouver, British Columbia V6T 2A3, University of York, York, YO10 5DD, and National Superconducting Cyclotron Facility, Michigan State University, East Lansing, Michigan 48824. Level structure of {sup 21}Mg: Nuclear and astrophysical implications. United States: N. p., 2006. Web. doi:10.1103/PhysRevC.73.034320.
St Murphy, A.J., Aliotta, M., Davinson, T., Ruiz, C., Woods, P.J., D'Auria, J.M., Buchmann, L., Chen, A.A., Laird, A.M., Sarazin, F., Walden, P., Fulton, B.R., Pearson, J.E., Brown, B.A., Simon Fraser University, Burnaby, British Columbia V5A 1S6, TRIUMF, Vancouver, British Columbia V6T 2A3, University of York, York, YO10 5DD, & National Superconducting Cyclotron Facility, Michigan State University, East Lansing, Michigan 48824. Level structure of {sup 21}Mg: Nuclear and astrophysical implications. United States. doi:10.1103/PhysRevC.73.034320.
St Murphy, A.J., Aliotta, M., Davinson, T., Ruiz, C., Woods, P.J., D'Auria, J.M., Buchmann, L., Chen, A.A., Laird, A.M., Sarazin, F., Walden, P., Fulton, B.R., Pearson, J.E., Brown, B.A., Simon Fraser University, Burnaby, British Columbia V5A 1S6, TRIUMF, Vancouver, British Columbia V6T 2A3, University of York, York, YO10 5DD, and National Superconducting Cyclotron Facility, Michigan State University, East Lansing, Michigan 48824. Wed . "Level structure of {sup 21}Mg: Nuclear and astrophysical implications". United States. doi:10.1103/PhysRevC.73.034320.
@article{osti_20771343,
title = {Level structure of {sup 21}Mg: Nuclear and astrophysical implications},
author = {St Murphy, A.J. and Aliotta, M. and Davinson, T. and Ruiz, C. and Woods, P.J. and D'Auria, J.M. and Buchmann, L. and Chen, A.A. and Laird, A.M. and Sarazin, F. and Walden, P. and Fulton, B.R. and Pearson, J.E. and Brown, B.A. and Simon Fraser University, Burnaby, British Columbia V5A 1S6 and TRIUMF, Vancouver, British Columbia V6T 2A3 and University of York, York, YO10 5DD and National Superconducting Cyclotron Facility, Michigan State University, East Lansing, Michigan 48824},
abstractNote = {Resonant elastic scattering of a radioactive {sup 20}Na beam incident upon protons in a polyethylene target has been used to probe the level structure of {sup 21}Mg above the proton decay threshold. Three states have been observed, and their properties deduced through analysis based on the R-matrix formalism. The results improve and extend previous studies of this nucleus. An estimate of the {sup 20}Na(p,{gamma}){sup 21}Mg reaction rate, including these new data, suggests this reaction will not play a significant role in explosive hydrogen burning in astrophysical sites such as novae and x-ray bursts.},
doi = {10.1103/PhysRevC.73.034320},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 73,
place = {United States},
year = {Wed Mar 15 00:00:00 EST 2006},
month = {Wed Mar 15 00:00:00 EST 2006}
}