Double-folding model for heavy-ion optical potential: Revised and applied to study<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">C</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>12</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathv

Khoa, Dao T.; Oertzen, W. von; Bohlen, H. G.

doi:10.1103/physrevc.49.1652

Cited by 211 publications

(194 citation statements)

References 44 publications

Supporting

Mentioning

164

Contrasting

Unclassified

Order By: Relevance

“…(i) The regional optical potential (ROP) of [59] was derived starting from a semimicroscopic analysis, using the double folding model [60], based on alpha-particle elastic scattering on A ≈ 100 nuclei at energies below 32 MeV. The energy-dependent phenomenological imaginary part of this semimicroscopic optical potential takes into account also a dispersive correction to the microscopic real potential.…”

Section: Global α + Nucleus Optical Potentialsmentioning

confidence: 99%

High precision113In(α,α)113In elastic scattering at energies near the Coulomb barrie

et al. 2013

View full text Add to dashboard Cite

Background:The γ process in supernova explosions is thought to explain the origin of proton-rich isotopes between Se and Hg, the so-called p nuclei. The majority of the reaction rates for γ process reaction network studies have to be predicted in Hauser-Feshbach statistical model calculations using global optical potential parametrizations. While the nucleon + nucleus optical potential is fairly well known, for the α + nucleus optical potential several different parametrizations exist and large deviations are found between the predictions calculated using different parameter sets. Purpose: By the measurement of elastic α-scattering angular distributions at energies around the Coulomb barrier a comprehensive test for the different global α + nucleus optical potential parameter sets is provided. Methods: Between 20 • and 175 • complete elastic alpha scattering angular distributions were measured on the 113 In p nucleus with high precision at E c.m. = 15.59 and 18.82 MeV. Results: The elastic scattering cross sections of the 113 In(α,α) 113 In reaction were measured for the first time at energies close to the astrophysically relevant energy region. The high precision experimental data were used to evaluate the predictions of the recent global and regional α + nucleus optical potentials. Parameters for a local α + nucleus optical potential were derived from the measured angular distributions. Conclusions: Predictions for the reaction cross sections of 113 In(α, γ ) 117 Sb and 113 In(α,n) 116 Sb at astrophysically relevant energies were given using the global and local optical potential parametrizations.

show abstract

Section: Global α + Nucleus Optical Potentialsmentioning

confidence: 99%

High precision113In(α,α)113In elastic scattering at energies near the Coulomb barrie

et al. 2013

View full text Add to dashboard Cite

show abstract

“…The first successful experiment [1] on cluster radioactivity reported the observation of spontaneous emission of 14 C from 223 Ra. This observation substantiated the theoretical prediction of the cluster decays from heavier nuclei by Sandulescu et al [2].…”

mentioning

confidence: 99%

“…First, we calculate the cluster-daughter interaction potential (nuclear) using the well-tested double-folding procedure [13,14]. This, along with the cluster-daughter Coulomb potential and the Q values, is used to obtain the decay half-lives in the WKB approximation.…”

mentioning

confidence: 99%

“…The required cluster-daughter potential is calculated next using the double-folding procedure [13,14]. Here, the densitydependent M3Y nucleon-nucleon interaction potential is folded with the calculated (RMF) daughter and cluster densities.…”

mentioning

confidence: 99%

“…The ground-state properties are calculated first within the framework of the relativistic mean field (RMF) model [15][16][17]. * E-mail address: yogy@phy.iitb.ac.inThe required cluster-daughter potential is calculated next using the double-folding procedure [13,14]. Here, the densitydependent M3Y nucleon-nucleon interaction potential is folded with the calculated (RMF) daughter and cluster densities.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Relativistic mean field description of cluster radioactivity

Bhagwat

Gambhir

2005

Phys. Rev. C

View full text Add to dashboard Cite

Comprehensive investigations of the observed cluster radioactivity are carried out. First, the relativistic mean field (RMF) theory is employed for the calculations of the ground-state properties of relevant nuclei. The calculations reproduce the experiment well. The calculated RMF point densities are folded with the densitydependent M3Y nucleon-nucleon interaction to obtain the cluster-daughter interaction potential. This, along with the calculated and experimental Q values, is used in the WKB approximation for estimating the half-lives of the parent nuclei against cluster decay. The calculations qualitatively agree with the experiment. The discovery of the spontaneous emission of clusters heavier than α from very heavy nuclei is one of the most exciting findings in nuclear physics. The first successful experiment [1] on cluster radioactivity reported the observation of spontaneous emission of 14 C from 223 Ra. This observation substantiated the theoretical prediction of the cluster decays from heavier nuclei by Sandulescu et al. [2]. A number of experimental investigations since then have been reported (e.g., [3][4][5][6]), confirming the first experiment and adding some heavier decay modes. So far, about 30 such decays have been reported [7], and the search for other possible cluster decays is ongoing. However, such measurements are difficult to make because of the very small branching ratio of the cluster decay mode to the α decay mode of the parent nuclei [6,7].On the theoretical front, primarily two kinds of models have been advanced to describe the cluster decay modes: 1) the unified models, which treat the alpha decay, heavy cluster decay, and cold fission on similar footings, and 2) the cluster models. The analytic super asymmetric fission model (ASAFM) [8] and the effective liquid drop model (ELDM) [9] are examples of the former, whereas the 'square well' approach of Price et al.[4], the Buck-Merchant model [10], and the preformed cluster model [11] belong to the latter category. In addition, the R-matrix theory for the calculation of decay widths using the required input information obtained from the shell model/cluster model + BCS framework has been employed with reasonable success [12].Here, we present a comprehensive theoretical investigation of all the observed cluster (heavier than α) decay modes. First, we calculate the cluster-daughter interaction potential (nuclear) using the well-tested double-folding procedure [13,14]. This, along with the cluster-daughter Coulomb potential and the Q values, is used to obtain the decay half-lives in the WKB approximation.Explicit calculations are carried out in three steps. The ground-state properties are calculated first within the framework of the relativistic mean field (RMF) model [15][16][17]. * E-mail address: yogy@phy.iitb.ac.inThe required cluster-daughter potential is calculated next using the double-folding procedure [13,14]. Here, the densitydependent M3Y nucleon-nucleon interaction potential is folded with the calculated (RMF) daughter and cluste...

show abstract