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Prog. Theor. Phys. Vol. 59 No. 2 (1978) pp. 465-479

[ Full Text PDF : FREE ACCESS (1318K) ]

A Study of Resonances in the Sub-Coulomb 12C-12C Reaction from the Viewpoint of Nuclear Molecule

Yosio Kondō, Takehiro Matsuse and Yasuhisa Abe

Research Institute for Fundamental Physics, Kyoto University, Kyoto 606

(Received August 19, 1977)

Abstract:

The resonances in the sub-Coulomb 12C-12C total reaction cross section are analyzed by a simple potential model. There exists a 2+ potential resonance in the elastic channel at about 6.3 MeV and at the same time other structures which strongly couple to the elastic channel and share the resonance strength. As the structures, we introduce the intrinsic excited nuclear molecular configurations, i.e., bound or quasibound states in inelastic channels. We include all the components up to the excitation of both the carbon nuclei to the first excited state (21+, 4.44 MeV) but with potential depth depending on channel and use a weak absorption potential. It is shown that this model can reproduce the characteristic features of the total reaction cross section, i.e., width, peak height and level density of the resonances and the energy dependence of the total reaction cross section at the same time. This means that “absorption under the barrier” is not necessary to be introduced.


URL : http://ptp.ipap.jp/link?PTP/59/465/
DOI : 10.1143/PTP.59.465

[ Full Text PDF : FREE ACCESS (1318K) ] Citation:

References:

  1. H. Feshbach, J. de Phys. Colloq. 37 (1976), C5-177.
  2. D. A. Bromley, Proceedings of the Second International Conference on Clustering Phenomena in Nuclei, Maryland, 1975, p. 465.
  3. R. H. Siemssen, Proceedings of the INS-IPCR Symposium on Cluster Structure of Nuclei and Transfer Reactions Induced by Heavy-Ions, Tokyo, 1975, p. 233.
  4. E. Almqvist, D. A. Bromley and J. A. Kuehner, Phys. Rev. Lett. 4 (1960), 515[APS].
  5. E. Almqvist, D. A. Bromley, J. A. Kuehner and B. Whalen, Phys. Rev. 130 (1963), 1140[APS].
  6. B. N. Nagorcka and J. O. Newton, Phys. Lett. B 41 (1972), 34[CrossRef].
  7. D. E. Groce and G. P. Lawrence, Nucl. Phys. 67 (1965), 277[CrossRef].
  8. E. R. Cosman, T. M. Cormier, K. Van Bibber, A. Sperduto, G. Young, J. Erskine, L. R. Greenwood and O. Hansen, Phys. Rev. Lett. 35 (1975), 265[APS].
  9. N. R. Fletcher, J. D. Fox, G. J. Kekelis, G. R. Morgan and G. A. Norton, Phys. Rev. C 13 (1976), 1173[APS].
  10. H. Voit, W. Galster, W. Treu, H. Fröhlich and P. Dück, Phys. Lett. B 67 (1977), 399[CrossRef].
  11. P. Sperr, D. Evers, K. Rudolph, W. Assmann, E. Spindler, P. Konrad and G. Denhöfer, Phys. Lett. B 49 (1974), 345[CrossRef].
  12. R. Wada, J. Schimizu and K. Takimoto, Phys. Rev. Lett. 38 (1977), 1341[APS].
  13. W. Galster, W. Treu, P. Dück, H. Fröhlich and H. Voit, Phys. Rev. C 15 (1977), 950[APS].
  14. R. H. Davis, Phys. Rev. Lett. 4 (1960), 521[APS].
  15. E. Vogt and H. McManus, Phys. Rev. Lett. 4 (1960), 518[APS].
  16. J. Y. Park, W. Scheid and W. Greiner, Phys. Rev. C 10 (1974), 967[APS].
  17. M. Nogami, private communication.
  18. B. Imanishi, Nucl. Phys. A 125 (1969), 33[CrossRef].
  19. J. R. Patterson, H. Winkler and C. S. Zaidins, Astrophys. J. 157 (1969), 367[CrossRef].
  20. M. G. Mazarakis and W. E. Stephens, Phys. Rev. C 7 (1973), 1280[APS].
  21. H. Spinka and H. Winkler, Nucl. Phys. A 233 (1974), 456[CrossRef].
    H. Spinka, Ph. D. Thesis, 1971, unpublished.
  22. G. J. Michaud and E. W. Vogt, Phys. Rev. C 5 (1972), 350[APS].
  23. H. Voit, P. Dück, W. Galster, H. Haindl, G. Hartmann, H.-D. Helb, F. Siller and G. Ischenko, Phys. Rev. C 10 (1974), 1331[APS].
  24. H. Emling, R. Nowotony, D. Pelte and G. Schrieder, Nucl. Phys. A 211 (1973), 600[CrossRef].
    R. Wieland, A. Gobbi, L. Chua, M. W. Sachs, D. Shapira, R. Stokstad and D. A. Bromley, Phys. Rev. C 8 (1973), 37[APS].
  25. T. M. Cormier, J. Applegate, G. M. Berkowitz, P. Braun-Munzinger, P. M. Cormier, J. W. Harris, C. M. Jachcinski, L. L. Lee, Jr., J. Barrette and H. E. Wegner, Phys. Rev. Lett. 38 (1977), 940[APS].
  26. Y. Kondō, T. Matsuse and Y. Abe, Proceedings of the INS-IPCR Symposium on Cluster Structure of Nuclei and Transfer Reactions Induced by Heavy-Ions, Tokyo, 1975, p. 280.
  27. Y. Kondō, T. Matsuse and Y. Abe, Proceedings of the Second International Conference on the Clustering Phenomena in Nuclei, Maryland, 1975, p. 532.
  28. A. Tohsaki, F. Tanabe and R. Tamagaki, Prog. Theor. Phys. 53 (1975), 1022[PTP].
    T. Ando, K. Ikeda and Y. Suzuki, Prog. Theor. Phys. 54 (1975), 119[PTP].
  29. T. Matsuse, Y. Kondō and Y. Abe, to be published.
  30. G. Michaud, Phys. Rev. C 8 (1973), 525[APS].
  31. W. Scheid, W. Greiner and R. Lemmer, Phys. Rev. Lett. 25 (1970), 176[APS].
    H.-J. Fink, W. Scheid and W. Greiner, Nucl. Phys. A 188 (1972), 259[CrossRef].
  32. W. Reilly, R. Wieland, A. Gobbi, M. W. Sachs and D. A. Bromley, Nuovo Cim. A 13 (1973), 897.

Citing Article(s) :

  1. Progress of Theoretical Physics Vol. 59 No. 4 (1978) pp. 1393-1395 :
    A New Evidence for a Band Crossing Model
    Yasuhisa Abe, Yosio Kondō and Takehiro Matsuse
  2. Progress of Theoretical Physics Vol. 59 No. 6 (1978) pp. 1904-1921 :
    A Band Crossing Model of Resonances in Heavy Ion Reactions. I
    Takehiro Matsuse, Yasuhisa Abe and Yosio Kondō
  3. Progress of Theoretical Physics Vol. 60 No. 4 (1978) pp. 1013-1026 :
    Dynamical Structural Change of 12C + 12C System during Scattering Process and Molecular Resonances. I
    Akihiro Tohsaki-Suzuki
  4. Progress of Theoretical Physics Vol. 67 No. 1 (1982) pp. 207-221 :
    12C +12C Molecule-Like Structure in 24Mg
    Masatoshi Ohkubo, Kiyoshi Katō and Hajime Tanaka
  5. Progress of Theoretical Physics Vol. 81 No. 2 (1989) pp. 390-395 :
    12C+12C Melecule-Like State in the Sub-Coulomb Barrier Region of 24Mg
    Kiyoshi Katō and Hajime Tanaka
  6. Progress of Theoretical Physics Supplement No.62 (1977) pp. 236-294 :
    Chapter V. A Coupled Channel Variational Method for Microscopic Study of Reactions between Complex Nuclei
    Masayasu Kamimura
  7. Progress of Theoretical Physics Supplement No.68 (1980) pp. 1-28 :
    Chapter I. Introduction to Comprehensive Nuclear Structure Study Based on Cluster Correlations and Molecular Viewpoint
    Kiyomi Ikeda, Hisashi Horiuchi and Sakae Saito
  8. Progress of Theoretical Physics Supplement No.68 (1980) pp. 303-358 :
    Chapter IV. Phenomenological Study of Two-Body Nuclear Molecular Configurations in the Highly Excited Energy Region
    Yasuhisa Abe, Yosio Kondō and Takehiro Matsuse

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