Isospin mixing in the giant dipole resonance

E. Kuhlmann

doi:10.1103/PhysRevC.20.415

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Isospin mixing in the giant dipole resonance

E. Kuhlmann

Institut für Experimentalphysik I, Ruhr-Universität Bochum, 4630 Bochum, Federal Republic of Germany

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Phys. Rev. C 20, 415 – Published 1 August, 1979

DOI: https://doi.org/10.1103/PhysRevC.20.415

Abstract

The amount of isospin mixing in the region of the giant dipole resonance was determined by a comparison of $α$ -capture reaction cross sections in self-conjugate and nonconjugate nuclei. For the two nuclei ${}^{24}{Mg}$ and ${}^{32}S$ Coulomb matrix elements $〈 V_{c} 〉 = 11 and 4$ keV at mean excitation energies of 17.6 and 15.7 MeV, respectively, were found.

NUCLEAR REACTIONS ${}^{20, 22}{Ne}$ ( $α$ , $γ_{0}$ ), ${}^{28, 30}{Si}$ ( $α$ , $γ_{0}$ ), $4 <~ E_{α} <~ 16$ MeV; deduced Coulomb matrix elements.

References (13)

D. H. Wilkinson, Philos. Mag. 1, 379 (1956)
D. R. Lux, N. T. Porile, and S. M. Grimes, Phys. Rev. C 15, 1308 (1977)
H. L. Harney, H. A. Weidenmüller, and A. Richter, Phys. Rev. C 16, 1774 (1977)
P. G. Bizzetti and A. M. Bizzetti-Sona, Nucl. Phys. A108, 274 (1968)
E. Kuhlmann, E. Ventura, J. R. Calarco, D. G. Mavis, and S. S. Hanna, Phys. Rev. C 11, 1525 (1975)
E. Kuhlmann, J. R. Calarco, V. K. C. Cheng, D. G. Mavis, J. R. Hall, and S. S. Hanna, Phys. Rev. C (to be published)
L. Meyer-Schützmeister, Z. Vager, R. E. Segel, and P. P. Singh, Nucl. Phys. A108, 180 (1968)
E. H. Auerbach, Brookhaven National Laboratory Report No. 6562, 1962 (unpublished)
E. Kuhlmann, F. Börchers, H. de Jong, and J. Krug, Nucl. Phys. A318, 125 (1979)
M. Kildir and J. R. Huizenga, Phys. Rev. C8, 1965 (1973)
S. Shlomo and G. J. Wagner, Z. Phys. A285, 283 (1978)
J. Atkinson et al., Nucl. Phys. A114, 143 (1968)
C. Rolfs et al., Nucl. Phys. A199, 328 (1973) , ibid. A235, 450 (1974) I. Berka et al., ibid. A288, 317 (1977)

[c1] D. H. Wilkinson, Philos. Mag. 1, 379 (1956)

[c2] D. R. Lux, N. T. Porile, and S. M. Grimes, Phys. Rev. C 15, 1308 (1977)

[c3] H. L. Harney, H. A. Weidenmüller, and A. Richter, Phys. Rev. C 16, 1774 (1977)

[c4] P. G. Bizzetti and A. M. Bizzetti-Sona, Nucl. Phys. A108, 274 (1968)

[c5] E. Kuhlmann, E. Ventura, J. R. Calarco, D. G. Mavis, and S. S. Hanna, Phys. Rev. C 11, 1525 (1975)

[c6] E. Kuhlmann, J. R. Calarco, V. K. C. Cheng, D. G. Mavis, J. R. Hall, and S. S. Hanna, Phys. Rev. C (to be published)

[c7] L. Meyer-Schützmeister, Z. Vager, R. E. Segel, and P. P. Singh, Nucl. Phys. A108, 180 (1968)

[c8] E. H. Auerbach, Brookhaven National Laboratory Report No. 6562, 1962 (unpublished)

[c9] E. Kuhlmann, F. Börchers, H. de Jong, and J. Krug, Nucl. Phys. A318, 125 (1979)

[c10] M. Kildir and J. R. Huizenga, Phys. Rev. C8, 1965 (1973)

[c11] S. Shlomo and G. J. Wagner, Z. Phys. A285, 283 (1978)

[c12] J. Atkinson et al., Nucl. Phys. A114, 143 (1968)

[c13] C. Rolfs et al., Nucl. Phys. A199, 328 (1973) , ibid. A235, 450 (1974) I. Berka et al., ibid. A288, 317 (1977)

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Isospin mixing in the giant dipole resonance

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