Chinese Physics C > 1986, Vol. 10 > Issue(2): 223-230

THER(π/2) INVARIANCE OF NUCLEI

GU Jin-Nan^,

Institute of Modern Physics, Academia Sinica, Lanzhou

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Abstract：
For the nuclear deformation of λ=2,4,6…, the most important symmetries are axial symmetry and R(π) invariance , but probably there is R(π/2) invariance in some nuclei. In this paper the possible occurrence of this new symmetry is analysed in general. In particular, the condition for the existence of the R(π/2) invariance, wave function of nucleus with R(π/2) invariance and signature-dependent terms in the matrix elements of an operator F are discussed in detail.
These provide an analysis of the experimental data, for example the alternating behavior of level energies and B(E/2) for K ^π=0 ⁺and K ^π=0 ^－bands.

References

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GU Jin-Nan. THE R(π/2) INVARIANCE OF NUCLEI[J]. Chinese Physics C, 1986, 10(2): 223-230.

GU Jin-Nan. THE R(π/2) INVARIANCE OF NUCLEI[J]. Chinese Physics C, 1986, 10(2): 223-230. shu

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Received: 1900-01-01
Revised: 1900-01-01

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

THER(π/2) INVARIANCE OF NUCLEI

GU Jin-Nan^,

Corresponding author:GU Jin-Nan,

Institute of Modern Physics, Academia Sinica, Lanzhou

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1986-04-05

Abstract:For the nuclear deformation of λ=2,4,6…, the most important symmetries are axial symmetry and R(π) invariance , but probably there is R(π/2) invariance in some nuclei. In this paper the possible occurrence of this new symmetry is analysed in general. In particular, the condition for the existence of the R(π/2) invariance, wave function of nucleus with R(π/2) invariance and signature-dependent terms in the matrix elements of an operator F are discussed in detail.
These provide an analysis of the experimental data, for example the alternating behavior of level energies and B(E/2) for K^π=0⁺and K^π=0^－bands.