|
Namangan Institute of Engineering and Technology
Pdf ko'rish
|
| bet | 269/693 | | Sana | 13.05.2024 | | Hajmi | 15,56 Mb. | | #228860 |
Bog'liq ТўпламNamangan Institute of Engineering and Technology
nammti.uz
10.25.2023
Pg.253
"Coriolis decoupling" have emerged as two mechanisms that most likely produce a band that
crosses the ground state band [13].
Conclusion. In this paper the role triaxality in the quadrupole shape excitation in even-even
heavy nuclei is considered in the framework of the free triaxiality model, where γ and β
2
variables
are dynamic. The Davidson potential is used for γ and β
2
variables. The energy level of excited
collective states was obtained by taking into account the high-order terms of the rotational energy
operator series (γ -γ
0
). The ground-state- and γ - bandcrossing is observed. The branching ratio of
intra/inter-band reduced E2-transition probabilities ground-state-band, β- and γ -bands for heavy
even-even nuclei are considered. The sensitivity of the intra/inter-band reduced E2-transition
probabilities to the triaxiality parameter γ
0
was analyzed.
The complex behavior inter/intra-band reduced E2-transitions probabilities at large values of
the triaxiality parameter γ
0
is ground-state- and γ-bandscrossing in these values. The bandcrossing
shows that within the framework of the free triaxiality model it is impossible to describe states of
large or maximum triaxiality, if such states are detected in the experiments.
References
1.
A. Bohr, and B. R. Mottelson, Nuclear structure (W. A. Benjamin, New York, 1975).
2.
D. Bonatsos et al., Phys. Rev. C 95,(2017)064326.
3.
A. S. Davydov, G. F. Filippov; Nucl. Phys. 8,(1958)237.
4.
M. S. Nadirbekov and G. A. Yuldasheva IJMPE 23,(2014)1450034.
5.
A. S. Davydov, Excited States of Atomic Nuclei, (Atomizdat, Moskva, 1967) (in Russian).
6.
Yu. V. Porodzinsky, E. Sh. Sukhovitsky Sov. J. Nucl. Phys. 53,(1991)64.
7.
M. S. Nadirbekov, O. A. Bozarov Phys. Atom. Nucl. 79,(2016)461.
8.
M. S. Nadirbekov, O. A. Bozarov Phys. Atom. Nuclei 80, (2017)46.
9.
J. B. Gupta IJMPE 29,(2020)2050037.
10.
\http://www.nndc.bnl.gov/ensdf/.
11.
Ben R. Mottelson and J. G. Valatin Phys. Rev. Lett. 5,(1960)511.
12.
Dennis Bonatsos Phys. Rev. C. 31, (1985)2256.
13.
F. S. Stephens and R. S. Simon, Nucl. Phys. A 183,(1972)257
|
| |
