Evaluation of the degree of restoration of broken Wigner's SU(4) spin-isospin symmetry in nuclei
- Uzbek Academy of Sciences, Institute of Nuclear Physics (Uzbekistan)
The Franzini-Radicati factor R was calculated on the basis of experimental data on the masses of nuclei in the mass-number range of 5 {<=} A {<=} 257. The values calculated for this factor made it possible to evaluate the degree of fulfillment of Wigner's SU(4) spin-isospin symmetry in nuclei. An expression for the factor R was obtained on the basis of Wigner's mass formula. This expression is isospin-dependent and takes into account odd-even variations in the mass. The formula for the factor R describes the separation of nuclei into threeWigner-type groups. The values calculated for the factor R were analyzed by the method of Student's t criterion, and it was inferred from the results of this analysis that only for nuclei having odd values of the mass number A and an isospin in the range of T{sub z} {>=} 53/2 is broken Wigner's SU(4) spin-isospin symmetry restored, the confidence level being {alpha} = 0.01.
- OSTI ID:
- 22043807
- Journal Information:
- Physics of Atomic Nuclei, Vol. 75, Issue 1; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
- Country of Publication:
- United States
- Language:
- English
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