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E1 gamma-transitions in hot atomic nuclei
V. A. Plujko1, O. M. Gorbachenko1, E. P. Rovenskykh1, V. O. Zheltonoshskii2
1Nuclear Physics Department, Taras Shevchenko National University, Kyiv, Ukraine
2Institute for Nuclear Research, National Academy of Sciences of Ukraine, Kyiv, Ukraine
Abstract: New version of the modified Lorentzian approach for radiative strength function is proposed. Renewed systematics for giant dipole resonance (GDR) parameters is given. The gamma-decay strength functions are calculated using renewed GDR parameters and compared with experimental data. It is demonstrated that closed-form approaches with asymmetric shape of the gamma strength, as a rule, provide the reliable simple method for description of gamma-decay processes.
Keywords: gamma transitions, radiative strength function, the giant dipole resonance.
References:1. Capote, R., Herman M., Obložinský P. et al. RIPL – Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations. Nucl. Data Sheets 110 (2009) 3107. https://doi.org/10.1016/j.nds.2009.10.004
See RIPL-3 web site at http://wwwnds.iaea.org/RIPL-3/2. Berman B. L., Fultz S. C. Measurements of giant dipole resonance with monoenergetic photons. Rev. Mod. Phys. 47 (1975) 713. https://doi.org/10.1103/RevModPhys.47.713
3. Plujko V. A., Capote R., Gorbachenko O. M. Giant Dipole Resonance Parameters with Uncertainties from Photonuclear Cross Sections. At. Data Nucl. Data Tables 97 (2011) 567. https://doi.org/10.1016/j.adt.2011.04.001
4. Plujko V. A., Gorbachenko O. M., Bondar V. M. et al. Renewed Database of GDR Parameters for Atomic Nuclei. Journal of Korean Physical Society (JKPS) 59 (2011) 1514. https://doi.org/10.3938/jkps.59.1514
5. Esser L., Neuneyer U., Casten R. F. et al. Correlations of the deformation variables β and γ in even-even Hf, W, Os, Pt, and Hg nuclei. Phys. Rev. C 55 (1997) 206. https://doi.org/10.1103/PhysRevC.55.206
6. Sukhovoj A. M., Khitrov V. A., Cher L. et al. Nuclear level density and radiative strength functions of cascade gamma-transitions at compound states decay of 114Cd and 124Te. Izvestiya RAN. Seriya Fiz. 69 (2005) 641.
7. Sukhovoj A. M., Furman W. I., Khitrov V. A. Approximation of sums of experimental radiative strength functions of dipole gamma-transition in the region Eγ ≈ Bn for the atomic masses 40 ≤ A ≤ 200. Proc. of the XV Int. Seminar on Interaction of Neutrons with Nuclei, Dubna, May 2007, p. 92.
8. Melby E., Guttormsen M. et al. Thermal and electromagnetic properties of 166Er and 167Er. Phys. Rev. C 63 (2001) 044309. https://doi.org/10.1103/PhysRevC.63.044309
9. Agvaanluvsan U., Schiller A., Becker J. A. et al. Level densities and γ-ray strength functions in 170,171,172Yb. Phys. Rev. C 70 (2004) 054611; https://doi.org/10.1103/PhysRevC.70.054611
http://ocl.uio.no/compilation/10. Schwengner R., Rusev G., Tsoneva N. et al. Pygmy dipole strength in 90Zr. Phys. Rev. C 78 (2008) 064314; https://doi.org/10.1103/PhysRevC.78.064314
Erhard M., Junghans A. R., Nair C. et al. Experimental study of the electric dipole strength in the even Mo nuclei and its deformation dependence. Phys. Rev. C 81 (2010) 034319. https://doi.org/10.1103/PhysRevC.81.03431911. Plujko (Plyuiko) V. A. The statistical description of the γ-decay width of states with fixed angular momentum. Yad. Fiz. 52 (1990) 1004.
12. Macklin R. L., Drake D. M., Arthur E. D. Neutron Capture Cross Sections of 182W, 183W, 184W and 186W from 2.6 to 2000 keV. J. Nucl. Science and Engineering 84 (1983) 98. https://doi.org/10.13182/NSE83-A17717
13. Herman M., Capote R., Carlson B. V. et al. EMPIRE: Nuclear Reaction Model Code System for Data Evaluation. Nucl. Data Sheets 108 (2007) 2655. https://doi.org/10.1016/j.nds.2007.11.003
https://ndclx4.bnl.gov/gf/project/empire/