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Title: Lowest excited states of {sup 13}O

Abstract

An excitation function for resonance elastic scattering of p+{sup 12}N was measured in the center of mass energy range of 0.8-2.7 MeV. Measurements were performed using inverse kinematics and the thick-target techniques. The data were analyzed in the framework of the R-matrix formalism. A definitive spin and parity assignment was possible for the first excited state of {sup 13}O at an excitation energy of 2.69 MeV as J{sup {pi}}=(1/2){sup +}. An indication of the presence of a new level in {sup 13}O at an excitation energy of 3.29 MeV with tentative spin-parity assignment J{sup {pi}}=(1/2){sup -} or (3/2){sup -} was obtained. We evaluate the impact of this measurement on the reaction rate of {sup 12}N(p,{gamma}){sup 13}O for nucleosynthesis in low-metallicity stars.

Authors:
; ; ; ; ; ; ;  [1];  [2]; ;  [3]; ; ; ;  [4];  [2];  [5]
  1. Institute for Structure and Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46556 (United States)
  2. Physics Department, Florida State University, Tallahassee, Florida 32306 (United States)
  3. Texas A and M University, College Station, Texas 77843 (United States)
  4. Physics Department, University of Michigan, Ann Arbor, Michigan 48109 (United States)
  5. (United Kingdom)
Publication Date:
OSTI Identifier:
20991020
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevC.75.024607; (c) 2007 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; ALLOCATIONS; CENTER-OF-MASS SYSTEM; ELASTIC SCATTERING; EXCITATION; EXCITATION FUNCTIONS; EXCITED STATES; MEV RANGE 01-10; NITROGEN 12; NUCLEOSYNTHESIS; OXYGEN 13; PARITY; R MATRIX; REACTION KINETICS; RESONANCE; SPIN

Citation Formats

Skorodumov, B. B., Boutachkov, P., Aprahamian, A., Almaraz, S., Kolata, J. J., Lamm, L. O., Quinn, M., Woehr, A., Rogachev, G. V., Goldberg, V. Z., Mukhamedzhanov, A., Amro, H., Becchetti, F. D., Chen, Y., Jiang, H., Brown, S., and Department of Physics, University of Surrey, GU2 7XH. Lowest excited states of {sup 13}O. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.024607.
Skorodumov, B. B., Boutachkov, P., Aprahamian, A., Almaraz, S., Kolata, J. J., Lamm, L. O., Quinn, M., Woehr, A., Rogachev, G. V., Goldberg, V. Z., Mukhamedzhanov, A., Amro, H., Becchetti, F. D., Chen, Y., Jiang, H., Brown, S., & Department of Physics, University of Surrey, GU2 7XH. Lowest excited states of {sup 13}O. United States. doi:10.1103/PHYSREVC.75.024607.
Skorodumov, B. B., Boutachkov, P., Aprahamian, A., Almaraz, S., Kolata, J. J., Lamm, L. O., Quinn, M., Woehr, A., Rogachev, G. V., Goldberg, V. Z., Mukhamedzhanov, A., Amro, H., Becchetti, F. D., Chen, Y., Jiang, H., Brown, S., and Department of Physics, University of Surrey, GU2 7XH. Thu . "Lowest excited states of {sup 13}O". United States. doi:10.1103/PHYSREVC.75.024607.
@article{osti_20991020,
title = {Lowest excited states of {sup 13}O},
author = {Skorodumov, B. B. and Boutachkov, P. and Aprahamian, A. and Almaraz, S. and Kolata, J. J. and Lamm, L. O. and Quinn, M. and Woehr, A. and Rogachev, G. V. and Goldberg, V. Z. and Mukhamedzhanov, A. and Amro, H. and Becchetti, F. D. and Chen, Y. and Jiang, H. and Brown, S. and Department of Physics, University of Surrey, GU2 7XH},
abstractNote = {An excitation function for resonance elastic scattering of p+{sup 12}N was measured in the center of mass energy range of 0.8-2.7 MeV. Measurements were performed using inverse kinematics and the thick-target techniques. The data were analyzed in the framework of the R-matrix formalism. A definitive spin and parity assignment was possible for the first excited state of {sup 13}O at an excitation energy of 2.69 MeV as J{sup {pi}}=(1/2){sup +}. An indication of the presence of a new level in {sup 13}O at an excitation energy of 3.29 MeV with tentative spin-parity assignment J{sup {pi}}=(1/2){sup -} or (3/2){sup -} was obtained. We evaluate the impact of this measurement on the reaction rate of {sup 12}N(p,{gamma}){sup 13}O for nucleosynthesis in low-metallicity stars.},
doi = {10.1103/PHYSREVC.75.024607},
journal = {Physical Review. C, Nuclear Physics},
number = 2,
volume = 75,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}