Browsing by Author "CHIANG, HC"
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Item type:Item, 2-QUASIPARTICLE STATES IN THE INTERACTING BOSON APPROXIMATION AND THE STRUCTURE OF EVEN PT ISOTOPES(1989-07-01) ;CHUU, DS ;HSIEH, ST ;CHIANG, HC ;電子物理學系Department of ElectrophysicsItem type:Item, ANOMALIES OF MOMENT OF INERTIA IN OS-170-180(1993-02-01) ;CHIANG, HC ;HSIEH, ST ;YEN, MMK ;CHUU, DS電子物理學系The anomalies of moment of inertia in 170-180Os are analysed in the interacting-boson-plus-fermion-pair model. The angular momentum-angular momentum interaction term (L.L) in the boson Hamiltonian is renormalized by a (1 + fL.L)- 1 factor. It was found that the renormalization facilitates the interaction parameter searching and all boson-boson and boson-fermion interaction parameters for the isotope chain can be unified. Energy levels can be reproduced quite well. The general features in the moment of inertia anomalies can be reproduced. The transition quadrupole moments are calculated and compared with other estimates.Item type:Item, EFFECTIVE BOSON CALCULATIONS ON SM ISOTOPES(1986-07-01) ;HSIEH, ST ;CHIANG, HC ;YEN, MMK ;CHUU, DS電子物理學系Item type:Item, EFFECTIVE INTERACTIONS AND ENERGY-SPECTRA FOR N = 28, 50, AND 82 ISOTONES(1978-01-01) ;CHIANG, HC ;HSIEH, ST ;CHUU, DS ;HAN, CS電子物理學系Item type:Item, EFFECTIVE INTERACTIONS AND ENERGY-SPECTRA FOR N=28-NUCLEI,N=29-NUCLEI AND N=30-NUCLEI(1978) ;CHUU, DS ;HAN, CS ;HSIEH, ST ;CHIANG, HC電子物理學系Item type:Item, EFFECTS OF 1P3/2 AND OF 5/2 HOLE EXCITATIONS ON N = 50 ISOTONES(1980) ;CHIANG, HC ;WANG, MC ;HAN, CS ;電子物理學系Department of ElectrophysicsItem type:Item, EFFECTS OF BOSON-FERMION MIXTURES IN PT ISOTOPES(1994-04-01) ;CHIANG, HC ;HSIEH, ST ;CHUU, DS ;電子物理學系Department of ElectrophysicsThe Pt isotopes are studied in the boson-plus-fermion-pair model. The 1i13/2, 1h9/2 and 2f5/2 fermion orbitals are included in the model space. Isotopes quite near to the closed shells are included in the calculation. It was found that significant influences to the energy levels could be produced by the small mixtures from the fermion-pair configurations. The energy spectra and moment of inertia backbendings can be reproduced quite well. The calculated B(E2) values show prominent dips at the onsets of different fermion-pair configurations.Item type:Item, EVEN-ODD XE AND BA ISOTOPES IN THE INTERACTING BOSON-FERMION MODEL(1989-06-01) ;CHIANG, HC ;HSIEH, ST ;CHUU, DS ;電子物理學系Department of ElectrophysicsItem type:Item, NEGATIVE-PARITY STATES AND OCTUPOLE COLLECTIVITY OF EVEN GE-ISOTOPES(1993-01-01) ;CHUU, DS ;HSIEH, ST ;CHIANG, HC ;電子物理學系Department of ElectrophysicsThe negative parity energy levels of the even-even Ge isotopes with mass number between 64 and 76 are studied systematically by enlarging the model space of the interacting boson approximation model to include both collective and noncollective basis states. The basis states consist of N(B)-1 sd-boson plus a f-boson configuration and N(B)-1 sd boson plus a fermion pair configuration. The fermions are allowed to occupy the f5/2 and g9/2 single-particle orbitals, respectively. It was found that the negative parity energy levels of 6-76 Ge nuclei can be described reasonably well. The intensities of the collective configuration in 3- states increase when going from nucleus Ge-64 to nucleUS Ge-72 and decrease from nucleus Ge-72 to nucleus Ge-74. The B (E3; 3(1)-->0(1)+) values are calculated and compared with the available observed data.Item type:Item, NEGATIVE-PARITY STATES OF N = 88 ISOTONES IN THE INTERACTING BOSON APPROXIMATION(1985-01-01) ;HAN, CS ;CHUU, DS ;HSIEH, ST ;CHIANG, HC電子物理學系Item type:Item, SHELL-MODEL STUDIES OF NEGATIVE-PARITY STATES IN NUCLEI WITH A=18, 19 AND 20(1982) ;YEN, MMK ;HSIEH, ST ;CHIANG, HC ;CHUU, DS電子物理學系Item type:Item, STRUCTURE OF EVEN GE ISOTOPES BY MEANS OF INTERACTING BOSON MODEL WITH A FERMION PAIR MODEL(1992-07-01) ;HSIEH, ST ;CHIANG, HC ;CHUU, DS ;電子物理學系Department of ElectrophysicsThe energy levels of the even-even Ge isotopes with mass number between 64 and 78 are studied in the model of the traditional interacting boson approximation. To account for the multiple band structure of these isotopes, one boson is allowed to break and form a fermion pair. The two fermions are allowed to excite to f5/2 and g9/2 Single-particle orbitals. It was found that the energy levels of the Ge-64-78 isotopes can be reproduced reasonably.Item type:Item, STUDY OF THE SHAPE TRANSITION IN SR ISOTOPES(1987-08-01) ;CHEN, LM ;HSIEH, ST ;CHIANG, HC ;CHUU, DS電子物理學系Item type:Item, WEAK-COUPLING CALCULATION ON THE DEFORMED REGIONS OF ZR AND MO ISOTOPES(1989-02-01) ;CHEN, LM ;HSIEH, ST ;CHIANG, HC ;CHUU, DS電子物理學系