Symmetric rotor interpretation of transitional nuclei

Simms, P.C.; Rickey, F. A.; Popli, R.

doi:10.1016/0375-9474(80)90526-6

Cited by 29 publications

(6 citation statements)

References 15 publications

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“…Also it fits systematically with its counterparts in other lighter odd-mass isotopes 119-125 I [15][16][17][18]. This observed experimental systematic could be explained as follows [19]: as the deformation increases, the shell closure at Z = 50 diminishes and the 9/2 + [404] orbital approaches more and more the Fermi surface, pushing the excitation energy of the band head 9/2 + more and more down. The fact that the 9/2 + state in 127 I lies at a relatively higher energy than its analogues in odd-mass lighter isotopes 119-125 I (δ > 0.12) can be explained by its relatively lower deformation (assumed to be δ ∼ 0.12).…”

Section: Discussion and Interpretationsupporting

confidence: 70%

Particle–rotor model interpretation of nuclear states in ¹²⁷I

Zeghib¹

2010

Phys. Scr.

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Previously observed positive and negative parity states of 127I have been interpreted using a particle–rotor model. Experimental energies and transition properties have been compared to those predicted by the calculation. The results show that this simple model with very few parameters can successfully explain most of the structure of 127I at low and medium energies. 127I being only three protons beyond the closed Z=50 shell with N=74 relatively far from the middle of the 50–82 neutron region (N=66), there is evidence that it is slightly deformed. The rotational structure of the ΔJ=1 band built on an unusually low-lying g9/2 proton–hole state (9/2+[404]) has been naturally very well predicted as well as other rotational features for the g7/2, d5/2 and h11/2 orbitals. Complete particle–core multiplets have been successfully identified for the first time.

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Section: Discussion and Interpretationsupporting

confidence: 70%

Particle–rotor model interpretation of nuclear states in ¹²⁷I

Zeghib¹

2010

Phys. Scr.

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“…We have shown [1,2,7,20] that collective rotations are an important degree of freedom in transitional nuclei. In order to demonstrate the validity of this argument a definitive systematic studies on odd A Tc nuclei [3][4][5][6] have been performed showing that the changes in nuclear structure are indeed affected predominantly by changes in deformation.…”

Section: Discussionmentioning

confidence: 82%

¹¹³Cd: a rotational nucleus with a small deformation

Zeghib¹

2007

Phys. Scr.

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Previously observed positive and negative parity states of 113 Cd have been interpreted using a particle-rotor model. Experimental energies and transition properties have been compared to those predicted by the calculation. The results show that this simple model with very few parameters can explain successfully most of the structure of 113 Cd. Even though 113 Cd is only two protons away from the closed Z = 50 shell, there is evidence that it is slightly deformed. One quasi-rotational band based on the 1/2 + ground state has been identified as well as other rotational features as in our previous work on 111 Cd [7].

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“…The 3187 keV 8 + state probably is the n(gg/2) 2 8 + state observed also at a similar excitation energy in ~~ and 1~ [2]. The 3275 keV 8 + state, which is fed from the 4077 keV 10 + state, could be regarded as a member of the g.s.…”

Section: Fig 3 Alignments In La~mentioning

confidence: 75%

“…For the description of low-lying excited states of even Cd nuclei, anharmonic quadrupole vibrator as well as slightly deformed rotor pictures have been applied [1,2]. The role of proton-intruder configurations have been widely discussed but not yet fully understood [3].…”

mentioning

confidence: 99%