Comparison of different proximity potentials for asymmetric colliding nuclei

Dutt, Ishwar; Puri, Rajeev K.

doi:10.1103/physrevc.81.064609

Cited by 223 publications

(251 citation statements)

References 89 publications

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“…[22]. γ , the surface energy coefficient, has been discussed in the literature [18], and using a suitable set of parameters the original proximity potential has been improved.…”

Section: B Proximity 2010mentioning

confidence: 99%

Half-life of sphericalαemitters and intrinsic properties of nuclei

2015

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The quantum mechanical effects are investigated on the half-life of α decay. To this aim the penetration probability in α decay of spherical isotopes of 146 Sm, 148 Sm, 148 Gd, and 224 Ra is calculated by employing coupled channel formalism by considering the effects of surface vibrations in the daughter nucleus; the obtained results are compared with those calculated by the semiclassical WKB approximation using two versions of the proximity potential. It is shown that by including low-lying excitation states the results are modified, in better agreement with experimental data.

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“…[22]. γ , the surface energy coefficient, has been discussed in the literature [18], and using a suitable set of parameters the original proximity potential has been improved.…”

Section: B Proximity 2010mentioning

confidence: 99%

Half-life of sphericalαemitters and intrinsic properties of nuclei

2015

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“…Shi and Swiatecki [42] were the first to use the proximity potential in an empirical manner, and later on, several theoretical groups [44][45][46] have used the proximity potential quite extensively for various studies that include the fusion excitation function. The contribution of both the internal and the external parts of the barrier has been considered in the present model for the penetrability calculation and the assault frequency ν is calculated for each parent-cluster combination which is associated with the vibration energy.…”

Section: Cppmdnmentioning

confidence: 99%

“…An assumption that ν = constant and that S depends only on the mass number of the emitted particle A e has been considered to derive the universal formula [70,72] as the microscopic calculation of the preformation probability [74] of many clusters from 8 Be to 46 Ar had shown its dependence only on the size of the cluster. By using a fit with experimental data for α decay, the corresponding numerical values [70] obtained were S α = 0.014 3153, ν = 10 22.01 s −1 .…”

Section: The Univ Curve Of Poenaru Et Almentioning

confidence: 99%

Predictions for the α-decay chains ofZ=120superheavy nuclei in the range272≤A≤319

Santhosh

Priyanka

2014

Phys. Rev. C

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The predictions on the α-decay chains of the isotopes of the superheavy nuclei with Z = 120 in the range 272 A 319 have been done within the Coulomb and proximity potential model for deformed nuclei. A comparison of our calculated α half-lives with the values computed using the Viola-Seaborg [J. Inorg. Nucl. Chem. 28, 741 (1966)] systematic, the universal curve of Poenaru et al. [Phys. Rev. C 74, 014312 (2006)], and the analytical formulas of Royer [J. Phys. G: Nucl. Part. Phys. 26, 1149 (2000)] show good agreement with each other. An extensive study on the spontaneous fission half-lives of all the isotopes under study has been performed to identify the mode of decay of these isotopes. The study reveals that the α-decay half-lives and the mode of decay of the isotopes of 298,299 120, which are evaluated by using our formalisms, agree well with the experimental observations of Oganessian et al. [Phys. Rev. C 79, 024603 (2009)]. Our study on the isotopes of Z = 120 predicts that the α decay restricts within the range 277 A 308 as those isotopes with A 276 and those nuclei with A 309 do not survive fission. We have also forecasted the mode of decay of 288−302 120 superheavy nuclei as six consistent α chains from the nuclei of 288,289,291−295 120, seven consistent α chains from the nuclei of 290 120, five consistent α chains from the nuclei of 296,297 120, and three consistent α chains from the nuclei of 300−302 120, which could be of great interest to the experimentalists. The one-proton and two-proton separation energy calculations on 272−319 120 superheavy nuclei have revealed that the isotopes spanning the range 273 A 291 may be considered to be the probable proton emitters.

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“…Here the diffuseness of the nuclear surface b ≈ 0.99 fm and γ is the nuclear surface tension coefficient which depends on the neutron/proton excess as [8] 2 2 ( ) 2 0.9517 1 1.7826…”

Section: Formalismmentioning

confidence: 99%

“…According to the original version of the proximity potential [8], the interaction potential V N (r) between two surfaces can be written as [9]:…”

Section: Formalismmentioning

confidence: 99%

Cluster Decay of ^208–238Th Isotopes

Oudih¹,

Saidi²,

Fellah³

et al. 2014

Exotic Nuclei

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The cluster radioactivity of Th was studied by using a fission-like model taking interacting potential as the sum of coulomb and proximity potentials. The emission of the particle is considered as a quantum tunneling penetration of the potential barrier in the semi-classical WKB approximation. The released energy is deduced from the new table of atomic mass evaluation (AME12) and from the Finite Range Droplet Model. The obtained decay half-lives are compared with the few available experimental values and those of the effective liquid drop model.

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Comparison of different proximity potentials for asymmetric colliding nuclei

Cited by 223 publications

References 89 publications

Half-life of sphericalαemitters and intrinsic properties of nuclei

Half-life of sphericalαemitters and intrinsic properties of nuclei

Predictions for the α-decay chains ofZ=120superheavy nuclei in the range272≤A≤319

Cluster Decay of ^208–238Th Isotopes

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Comparison of different proximity potentials for asymmetric colliding nuclei

Cited by 223 publications

References 89 publications

Half-life of sphericalαemitters and intrinsic properties of nuclei

Half-life of sphericalαemitters and intrinsic properties of nuclei

Predictions for the α-decay chains ofZ=120superheavy nuclei in the range272≤A≤319

Cluster Decay of 208–238Th Isotopes

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Cluster Decay of ^208–238Th Isotopes