Using the particle-number-conserving method we show that the observed downturn of J(2) of the superdeformed band 194Hg(1) can be satisfactorily accounted for, provided that both the monopole and quadrupole pairing int...Using the particle-number-conserving method we show that the observed downturn of J(2) of the superdeformed band 194Hg(1) can be satisfactorily accounted for, provided that both the monopole and quadrupole pairing interaction are included in the cranked shell model Hamiltonian.展开更多
By using various approaches to the spin assignment, including the best-fit-method, the variation of moment of inertia with angular momentum, the bandhead moment of inertia J0 systematics, and the signature systematics...By using various approaches to the spin assignment, including the best-fit-method, the variation of moment of inertia with angular momentum, the bandhead moment of inertia J0 systematics, and the signature systematics, the spin of the lowest level observed in the first discovered superdeformed band 152Dy(1)is definitely predicted to be I0 = 26(Eγ(I0 + 2 → I0) = 602.4 keV), rather than the previously predicted I0 = 22,24, or 25. The spin prediction and properties of some superdeformed bands in the A ~ 150 region are discussed.展开更多
1 Introduction In 1980, L. W. Alvarez suggested a hypothesis that the falling of a largeextraterrestrial body upon the earth caused the extinction event at the end of theCretaceous, according to the extraordinarily hi...1 Introduction In 1980, L. W. Alvarez suggested a hypothesis that the falling of a largeextraterrestrial body upon the earth caused the extinction event at the end of theCretaceous, according to the extraordinarily high concentration of Ir in K/T boundarydeposits. Since then, studies have indicated that the iridium anomaly distributeswidely in the sections of this age over the world. However, these studies focused onthe abundance of Ir. Little attention was paid to other platinum group metals (PGM).Analyzing the abundance of Ru in boundary samples is very difficult because of展开更多
基金Supported by the National Natural Science Foundation of China under Grant No.19675002.
文摘Using the particle-number-conserving method we show that the observed downturn of J(2) of the superdeformed band 194Hg(1) can be satisfactorily accounted for, provided that both the monopole and quadrupole pairing interaction are included in the cranked shell model Hamiltonian.
基金the Doctoral Program Foundation of Institution of Higher Educationthe National Natural Science Foundation of China under Grant No.19675002.
文摘By using various approaches to the spin assignment, including the best-fit-method, the variation of moment of inertia with angular momentum, the bandhead moment of inertia J0 systematics, and the signature systematics, the spin of the lowest level observed in the first discovered superdeformed band 152Dy(1)is definitely predicted to be I0 = 26(Eγ(I0 + 2 → I0) = 602.4 keV), rather than the previously predicted I0 = 22,24, or 25. The spin prediction and properties of some superdeformed bands in the A ~ 150 region are discussed.
文摘1 Introduction In 1980, L. W. Alvarez suggested a hypothesis that the falling of a largeextraterrestrial body upon the earth caused the extinction event at the end of theCretaceous, according to the extraordinarily high concentration of Ir in K/T boundarydeposits. Since then, studies have indicated that the iridium anomaly distributeswidely in the sections of this age over the world. However, these studies focused onthe abundance of Ir. Little attention was paid to other platinum group metals (PGM).Analyzing the abundance of Ru in boundary samples is very difficult because of
