Abstract
Supporting Institution
Tubitak
Project Number
118F094
References
- 1. Goldhaber, M.,Teller, E., On nuclear dipole vibrations. Physical Review, 74, 1046, 1948
- 2. Bartholomew G. A., Annu. Rev. Nucl. Sci. 11, 259 (1961).
- 3. Brzosko J. S., Gierlik E., Soltan A., Wilhelmi Z., Can. J. Phys. 47, 2849 (1969).
- 4. Yoshida, K., and T. Nakatsukasa, Phys. Rev. C 83, 021304® (2011).
- 5. Makinaga, A., et.al., Phys. Rev. C 82, 024314 – Published 16 August 2010
- 6. Guliyev ,E., Kuliev, A. A. and Guner, M., Cent. Eur. J. Phys. 8, 961 (2010).
- 7. Kuliev, A. A, et al., Eur. Phys. J. A 43, 313 (2010).
- 8. Yakut H., et.al, 5th International Conference on Theoretical and Experimental Studies in Nuclear Applications and Technology, Conferance Proceeding Book, 167 (2019)
- 9. Bohr A. and Mottelson B., Nuclear Structure (Benjamin, Reading, 1975), Vol. II.
- 10. Raman S., et al., At. Data Nucl. Data Tables 78, 1 (2001).
- 11. Dudek J., and Werner T., J. Phys. G 4, 1543 (1978).
- 12. Soloviev G., 1976.Theory of Complex Nuclei: TerHaar D (ed). Pergamon Press. 1st edn. New York.
Abstract
The dipole response associated with the pygmy dipole
resonance (PDR) in 154Sm and 155Sm has been studied. In
the 154Sm nucleus 1- phonons with K=0 and K=1 branches have
been calculated using the Translation and Galilean Invariant Quasiparticle
Random Phase Approximation (TGI-QRPA). The structure of the more pronounced
electric dipole (E1) peaks in PDR
region in 154Sm is composed of predominantly two-quasiproton or
two-quasineutron states. The calculations in 155Sm has been
performed in the framework of the Translation and Galilean Invariant Quasiparticle
Phonon Nuclear Model (TGI-QPNM) based on the
TGI-QRPA 1- phonons calculated for 154Sm. When going from
154Sm to neighbouring 155Sm, the fragmentation of the E1 strength is dramatically enhanced.
The results emphasize the role of the quasiparticle⨂phonon interactions in enhancing the fragmentation of the strength in
the PDR region in 155Sm. Even though the strong fragmentation of the
E1 strength obtained for 155Sm,
in 5-8 MeV energy region the summed E1
strength is comparable to that in 154Sm. The results indicate that
one quasiparticle behaves solely as a spectator in 155Sm.
Project Number
118F094
References
- 1. Goldhaber, M.,Teller, E., On nuclear dipole vibrations. Physical Review, 74, 1046, 1948
- 2. Bartholomew G. A., Annu. Rev. Nucl. Sci. 11, 259 (1961).
- 3. Brzosko J. S., Gierlik E., Soltan A., Wilhelmi Z., Can. J. Phys. 47, 2849 (1969).
- 4. Yoshida, K., and T. Nakatsukasa, Phys. Rev. C 83, 021304® (2011).
- 5. Makinaga, A., et.al., Phys. Rev. C 82, 024314 – Published 16 August 2010
- 6. Guliyev ,E., Kuliev, A. A. and Guner, M., Cent. Eur. J. Phys. 8, 961 (2010).
- 7. Kuliev, A. A, et al., Eur. Phys. J. A 43, 313 (2010).
- 8. Yakut H., et.al, 5th International Conference on Theoretical and Experimental Studies in Nuclear Applications and Technology, Conferance Proceeding Book, 167 (2019)
- 9. Bohr A. and Mottelson B., Nuclear Structure (Benjamin, Reading, 1975), Vol. II.
- 10. Raman S., et al., At. Data Nucl. Data Tables 78, 1 (2001).
- 11. Dudek J., and Werner T., J. Phys. G 4, 1543 (1978).
- 12. Soloviev G., 1976.Theory of Complex Nuclei: TerHaar D (ed). Pergamon Press. 1st edn. New York.
Details
| Primary Language | English |
|---|---|
| Journal Section | Araştırma Makalesi |
| Authors | |
| Project Number | 118F094 |
| Publication Date | December 31, 2019 |
| Submission Date | October 21, 2019 |
| Acceptance Date | December 19, 2019 |
| Published in Issue | Year 2019 |