Chinese Physics C > 1992, Vol. 16 > Issue(2): 172-177

A Mass Formula with a Few Free Parameters and Nuclear Mass Calculations

GAN Zai-Guo^,,
HUANG Ye-Cheng

Institute of Modern Physics,Academia Sinica,Lanzhou 730000

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Abstract：
A mass formula with deformation and shell corrections for a few free parameters was described.By means of the formula the calculations of 1440 nuclear masses and 1250 two neutron separation energies s _2nin the region of 28≤Z≤81 were performed.The root-mean-square deviations are respectively 1.01MeV for nuclear masses and 0.57MeV for s _2n.The results of the theory could also reproduce the characters of the closure shell,the subshell and the deformation of the nuclei.

References

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S. A. E. Johansson, Arkiv for Fysik, 22(1962), 414.[2] S. A. E. Johansson et al., Arkiv for Fysik, 36(,1967), 353.[3] S. A. E. Johansson et al., AMCO-7, p. 429-435. Edited by O. Klepper, Darmstadt, 1984.[4] L. Spanier et al., Atmomic Data and Nuclear Data Tables, 39(1988), 353.[5] 黄业成等，高能物理与核物理，15(1991),336.[6] S. Raman et al., Atmomic Data and Nuclear Data Tables, 36(1987), 18.[7] A. H. Wapstra et al., Atmomic Data and Nuclear Data Tables, 39(1988), 281.[8] F. Tondeur, 4th International Conference on Nuclei far from Stability, 1981, p. 81.[9] P. E. Haustein, Nucl. Far from Stability (V), 1987, p. 56.[10] A. H. Wapstra et al., Nucl, Phys., A432(1985), 57-139.[11] G. Audi et al., AMCO-7, p. 157, Edited by O. Klepper, Darmstadt, 1984.

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GAN Zai-Guo and HUANG Ye-Cheng. A Mass Formula with a Few Free Parameters and Nuclear Mass Calculations[J]. Chinese Physics C, 1992, 16(2): 172-177.

GAN Zai-Guo and HUANG Ye-Cheng. A Mass Formula with a Few Free Parameters and Nuclear Mass Calculations[J]. Chinese Physics C, 1992, 16(2): 172-177. shu

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

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沈阳化工大学材料科学与工程学院沈阳 110142

A Mass Formula with a Few Free Parameters and Nuclear Mass Calculations

GAN Zai-Guo^,
HUANG Ye-Cheng

Corresponding author:GAN Zai-Guo,

Institute of Modern Physics,Academia Sinica,Lanzhou 730000

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1992-02-05

Abstract:A mass formula with deformation and shell corrections for a few free parameters was described.By means of the formula the calculations of 1440 nuclear masses and 1250 two neutron separation energies s_2nin the region of 28≤Z≤81 were performed.The root-mean-square deviations are respectively 1.01MeV for nuclear masses and 0.57MeV for s_2n.The results of the theory could also reproduce the characters of the closure shell,the subshell and the deformation of the nuclei.