High-Resolution Study of Isobaric Analog Resonances in Na23

G. A. Keyworth, P. Wilhjelm, G. C. Kyker, Jr., H. W. Newson, and E. G. Bilpuch
Phys. Rev. 176, 1302 – Published 20 December 1968
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Abstract

Excitation functions for the elastic scattering of protons by Ne22 have been measured at 90°, 105°, 120°, 135°, 150°, and 160° from 0.8 to 3.13 MeV, and for the reaction Ne22(p, p)Ne*22 (first excited state), at 90°, 120°, and 150° from 2.0 to 3.13 MeV, with an average energy resolution of about 250 eV. Spins, parities, and partial and total widths have been extracted for the large majority of the 76 resonances observed. Two isobaric analog states, those of the sixth and seventh excited states of Ne23, have been identified. Both analogs are evidenced as fragmentations of the broad T> states into enhancement of the background T< states. A sum rule applied to the individual fine-structure widths implies spectroscopic factors in agreement with those extracted from (d, p) stripping measurements on Ne22.

  • Received 16 July 1968

DOI:https://doi.org/10.1103/PhysRev.176.1302

©1968 American Physical Society

Authors & Affiliations

G. A. Keyworth*, P. Wilhjelm, G. C. Kyker, Jr., H. W. Newson, and E. G. Bilpuch§

  • Duke University, Durham, North Carolina

  • *Now at Los Alamos Scientific Laboratory, Los Alamos, N. M.
  • Research Associate, University of North Carolina, Chapel Hill, N. C., 1966-67. Now at Niels Bohr Institute, Copenhagen, Denmark.
  • Now at Oakland University, Rochester, Mich.
  • §This work was supported in part by the U. S. Atomic Energy Commission, and the computations involved were performed in the Triangle Universities Computing Center which is supported in part by the National Science Foundation.

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Vol. 176, Iss. 4 — December 1968

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