Multi-quasiparticle potential-energy surfaces

Fang, Xu; Walker, P. M.; Sheikh, J. A.; Wyss, R.

doi:10.1016/s0370-2693(98)00857-0

Cited by 168 publications

(176 citation statements)

References 23 publications

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“…For the present purposes, the PES calculations are limited to |β 3 | ≤ 0.3 because higher β 3 deformation can cause strong mixing of orbits, leading to difficulty in tracing the given orbits. This is similar to the calculation for nonaxial deformations, where tracing orbits at large γ deformation needs special attention [17]. Such PESs can show the shape changes and barrier changes due to the polarization of unpaired nucleons.…”

supporting

confidence: 79%

“…[13][14][15][16], the present study emphasises the use of a configuration-constrained technique to obtain information about the PESs for broken-pair excitations. This builds on previous work [4,6,17].…”

mentioning

confidence: 63%

“…This has been achieved by calculating and identifying the average Nilsson quantum numbers for the orbits involved in the configuration. The process is the same as that in the (β 2 , γ, β 4 ) space [17] except that, for reflection-asymmetric deformation, parity is no longer conserved. (Note that Ω is still a good quantum number.)…”

mentioning

confidence: 99%

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On the possibility of enhanced fission stability for broken-pair excitations

Walker

Fang

Liu

et al. 2012

J. Phys. G: Nucl. Part. Phys.

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confidence: 79%

mentioning

confidence: 63%

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On the possibility of enhanced fission stability for broken-pair excitations

Walker

Fang

Liu

et al. 2012

J. Phys. G: Nucl. Part. Phys.

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“…[27]. For a multi-quasiparticle state, however, the microscopic energy contains the contribution from the unpaired particles which occupy the single-particle orbits specified by the given configuration, see our previous work [28] for the detailed formula. Blocking effects from the unpaired particles are taken into account by removing the configuration orbits in the LN pairing calculation.…”

Section: The Modelmentioning

confidence: 99%

Multi-quasiparticle excitation: Extending shape coexistence inA~190neutron-deficient nuclei

et al. 2010

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Multi-quasiparticle high-K states in neutron-deficient mercury, lead, and polonium isotopes have been investigated systematically by means of configuration-constrained potential-energy-surfacecalculations. An abundance of high-K states is predicted with both prolate and oblate shapes, which extends the shape coexistence of the mass region. Well-deformed shapes provide good conditions for the formation of isomers, as exemplified in 188 Pb. Of particular interest is the prediction of low-lying 10 − states in polonium isotopes, which indicate long-lived isomers.

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“…The configuration-constrained potentialenergy-surface calculations developed by Xu et al [37] can predict the deformation for a specific multi-quasiparticle configuration while including the γ degree of freedom. Figure 7 shows a TRS calculation for the ground state of TABLE III.…”

Section: B 82 41 Nb 41mentioning

confidence: 99%

Isomeric states in neutron-deficientA~80–90nuclei populated in the fragmentation ofAg107
Garnsworthy¹,
Regan²,
Piétri³
et al. 2009
Phys. Rev. C
31
1
6
1
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The relativistic projectile fragmentation of a 750 MeV per nucleon beam of 107 Ag was used to populate isomeric states in neutron-deficient nuclei around A = 80-90. Reaction products were separated and unambiguously identified using the GSI FRagment Separator (FRS) and its ancillary detectors. At the final focal plane, the fragments were slowed from relativistic energies by means of an aluminium degrader and implanted in a passive stopper in the center of the high-efficiency, high-granularity Stopped Rare Isotope Spectroscopic INvestigation at GSI (RISING) germanium array. This allowed the identification of excited states in the N = Z nuclei 86 43 Tc and, for the first time, 82 41 Nb. Isomeric states have also been identified for the first time in 87,88 Tc, and a previously unreported isomer was observed in 84 Nb. Experimental results are presented along with a discussion on the structure of these nuclei based on interpretations provided by several theoretical models.

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Multi-quasiparticle potential-energy surfaces

Cited by 168 publications

References 23 publications

On the possibility of enhanced fission stability for broken-pair excitations

On the possibility of enhanced fission stability for broken-pair excitations

Multi-quasiparticle excitation: Extending shape coexistence inA~190neutron-deficient nuclei

Isomeric states in neutron-deficientA~80–90nuclei populated in the fragmentation ofAg107
Garnsworthy¹,
Regan²,
Piétri³
et al. 2009
Phys. Rev. C
31
1
6
1
View full text Add to dashboard Cite

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Multi-quasiparticle potential-energy surfaces

Cited by 168 publications

References 23 publications

On the possibility of enhanced fission stability for broken-pair excitations

On the possibility of enhanced fission stability for broken-pair excitations

Multi-quasiparticle excitation: Extending shape coexistence inA~190neutron-deficient nuclei

Isomeric states in neutron-deficientA~80–90nuclei populated in the fragmentation ofAg107Garnsworthy1, Regan2, Piétri3 et al. 2009Phys. Rev. C31161View full textAdd to dashboardCite

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Isomeric states in neutron-deficientA~80–90nuclei populated in the fragmentation ofAg107
Garnsworthy¹,
Regan²,
Piétri³
et al. 2009
Phys. Rev. C
31
1
6
1
View full text Add to dashboard Cite