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Title: Analysis of orbital occupancy of valence neutron in {sup 15}C through Coulomb breakup reactions

Abstract

The Coulomb breakup reactions {sup 208}Pb({sup 15}C, {sup 14}C + n){sup 208}Pb and {sup 181}Ta({sup 15}C, {sup 14}C + n){sup 181}Ta have been studied at 68 and 85 A MeV beam energies, respectively, within the framework of the eikonal approximation to investigate the orbital occupancy of valence neutron in the {sup 15}C nucleus. The outcomes of the present work favor 0{sup +} ⊗ 2s{sub 1/2} as the core-neutron coupling for the ground-state structure with 0.91 as a spectroscopic factor.

Authors:
 [1]
  1. Deenbandhu Chhotu Ram University of Science and Technology, Department of Physics (India)
Publication Date:
OSTI Identifier:
22472347
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Atomic Nuclei; Journal Volume: 78; Journal Issue: 2; Other Information: Copyright (c) 2015 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ARSENIC 91; BREAKUP REACTIONS; CARBON 14; CARBON 14 REACTIONS; CARBON 15; EIKONAL APPROXIMATION; GROUND STATES; LEAD 208; LEAD 208 TARGET; MEV RANGE; NEUTRONS; NUCLEAR STRUCTURE; SPECTROSCOPIC FACTORS; TANTALUM 181; TANTALUM 181 TARGET

Citation Formats

Singh, P., E-mail: panghal005@gmail.com, E-mail: pardeep.phy@dcrustm.org. Analysis of orbital occupancy of valence neutron in {sup 15}C through Coulomb breakup reactions. United States: N. p., 2015. Web. doi:10.1134/S1063778815010160.
Singh, P., E-mail: panghal005@gmail.com, E-mail: pardeep.phy@dcrustm.org. Analysis of orbital occupancy of valence neutron in {sup 15}C through Coulomb breakup reactions. United States. doi:10.1134/S1063778815010160.
Singh, P., E-mail: panghal005@gmail.com, E-mail: pardeep.phy@dcrustm.org. Sun . "Analysis of orbital occupancy of valence neutron in {sup 15}C through Coulomb breakup reactions". United States. doi:10.1134/S1063778815010160.
@article{osti_22472347,
title = {Analysis of orbital occupancy of valence neutron in {sup 15}C through Coulomb breakup reactions},
author = {Singh, P., E-mail: panghal005@gmail.com, E-mail: pardeep.phy@dcrustm.org},
abstractNote = {The Coulomb breakup reactions {sup 208}Pb({sup 15}C, {sup 14}C + n){sup 208}Pb and {sup 181}Ta({sup 15}C, {sup 14}C + n){sup 181}Ta have been studied at 68 and 85 A MeV beam energies, respectively, within the framework of the eikonal approximation to investigate the orbital occupancy of valence neutron in the {sup 15}C nucleus. The outcomes of the present work favor 0{sup +} ⊗ 2s{sub 1/2} as the core-neutron coupling for the ground-state structure with 0.91 as a spectroscopic factor.},
doi = {10.1134/S1063778815010160},
journal = {Physics of Atomic Nuclei},
number = 2,
volume = 78,
place = {United States},
year = {Sun Mar 15 00:00:00 EDT 2015},
month = {Sun Mar 15 00:00:00 EDT 2015}
}
  • The neutron capture reaction on {sup 14}C leading to the {sup 15}C ground state, which plays an important role in various nucleosynthesis processes, has been studied using the Coulomb breakup of {sup 15}C on a Pb target at 68 MeV/nucleon. The breakup cross section has been converted into the energy-dependent neutron capture cross section using the principle of detailed balance. The energy spectrum shows typical p-wave neutron capture characteristics, which is explained by the fact that the ground state of {sup 15}C possesses a strong single-particle s-wave component and a moderate-sized neutron halo structure. The capture cross section for themore » {sup 14}C(n,{gamma}){sup 15}C reaction derived from the present experiment has been found to be consistent with the most recent data, directly measured using a {sup 14}C target. This result assures the validity of the Coulomb breakup method in deriving the neutron capture cross section for neutron-rich nuclei.« less
  • No abstract prepared.
  • No abstract prepared.
  • A study of the {sup 12}C({sup 20}Ne,thinsp{sup 16}Othinsp{sup 8}Be){sup 8}Be and {sup 12}C({sup 24}Mg,thinsp{sup 16}Othinsp{sup 8}Be){sup 12}C reactions has revealed {sup 16}O+{sup 8}Be breakup occurring from specific states in the {sup 24}Mg nucleus at high-excitation energies. A spin assignment has been determined for one of these states from an angular correlation measurement of the breakup fragments. In the {sup 20}Ne beam reaction, states have been identified at 22.33, 22.96, 24.00, 24.43, 24.88, 25.53, 27.35, 27.97, 28.88, and 30.13 MeV, and in the {sup 24}Mg beam reaction states have been identified at 20.58, 21.54, 22.70, and 24.31 MeV. The results havemore » been compared with previous measurements of the {sup 12}C+{sup 12}C breakup channel. {copyright} {ital 1998} {ital The American Physical Society}« less
  • The semiclassical, dynamical description of diffraction dissociation of weakly bound nuclei is applied to analyze the decay-energy spectra of {sup 15}C that have been measured at 68 MeV/nucleon on a Pb target. The optical potentials that are used to describe the nuclear interaction of {sup 15}C with the target nucleus are realistic because the fits to the two measured spectra, one with a small and one with a very large acceptance angle, are consistent and of similar quality. The cross section for the radiative neutron capture on {sup 14}C to the 1/2{sup +} ground state of {sup 15}C is deducedmore » from the analysis. When combined with an estimated contribution from the capture to the 5/2{sup +} excited state of {sup 15}C, an excellent agreement with a recent direct capture measurement is achieved.« less