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Title: Capture cross sections for the near symmetric {sup 124}Sn+{sup 96}Zr reaction

Abstract

Capture-fission cross sections were measured for the near symmetric reaction between the massive nuclei {sup 124}Sn and {sup 96}Zr for center of mass energies from 195 to 265 MeV. Coincident fission fragments were detected and separated from elastic and deep inelastic scattering products by angle/energy/mass conditions. The measured capture cross sections agree quite well with calculations using the dinuclear system (DNS) model. The DNS model also predicts the fusion cross section for this reaction with a fusion barrier height of 208.0 MeV. The deduced extra push energy, corresponding to this barrier height, differs from that deduced from evaporation residue measurements.

Authors:
; ; ; ; ; ; ; ;  [1];  [2];  [2];  [2]
  1. Department of Chemistry, Oregon State University, Corvallis, Oregon 97331 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20864217
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 74; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.74.064612; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CAPTURE; CROSS SECTIONS; DEEP INELASTIC HEAVY ION REACTIONS; DEEP INELASTIC SCATTERING; EVAPORATION MODEL; FISSION; FISSION FRAGMENTS; HEAVY ION FUSION REACTIONS; MEV RANGE; NUCLEAR FRAGMENTATION; TIN 124; ZIRCONIUM 96

Citation Formats

Vinodkumar, A. M., Loveland, W., Sprunger, P. H., Peterson, D., Liang, J. F., Shapira, D., Varner, R. L., Gross, C. J., Kolata, J. J., Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, and Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556. Capture cross sections for the near symmetric {sup 124}Sn+{sup 96}Zr reaction. United States: N. p., 2006. Web. doi:10.1103/PHYSREVC.74.064612.
Vinodkumar, A. M., Loveland, W., Sprunger, P. H., Peterson, D., Liang, J. F., Shapira, D., Varner, R. L., Gross, C. J., Kolata, J. J., Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, & Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556. Capture cross sections for the near symmetric {sup 124}Sn+{sup 96}Zr reaction. United States. doi:10.1103/PHYSREVC.74.064612.
Vinodkumar, A. M., Loveland, W., Sprunger, P. H., Peterson, D., Liang, J. F., Shapira, D., Varner, R. L., Gross, C. J., Kolata, J. J., Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, and Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556. Fri . "Capture cross sections for the near symmetric {sup 124}Sn+{sup 96}Zr reaction". United States. doi:10.1103/PHYSREVC.74.064612.
@article{osti_20864217,
title = {Capture cross sections for the near symmetric {sup 124}Sn+{sup 96}Zr reaction},
author = {Vinodkumar, A. M. and Loveland, W. and Sprunger, P. H. and Peterson, D. and Liang, J. F. and Shapira, D. and Varner, R. L. and Gross, C. J. and Kolata, J. J. and Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 and Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 and Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556},
abstractNote = {Capture-fission cross sections were measured for the near symmetric reaction between the massive nuclei {sup 124}Sn and {sup 96}Zr for center of mass energies from 195 to 265 MeV. Coincident fission fragments were detected and separated from elastic and deep inelastic scattering products by angle/energy/mass conditions. The measured capture cross sections agree quite well with calculations using the dinuclear system (DNS) model. The DNS model also predicts the fusion cross section for this reaction with a fusion barrier height of 208.0 MeV. The deduced extra push energy, corresponding to this barrier height, differs from that deduced from evaporation residue measurements.},
doi = {10.1103/PHYSREVC.74.064612},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 74,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}
  • Capture-fission cross sections were measured for the near symmetric reaction between the massive nuclei 124Sn and 96Zr for center of mass energies from 195 to 265 MeV. Coincident fission fragments were detected and separated from elastic and deep inelastic scattering products by angle/energy/mass conditions. The measured capture cross sections agree quite well with calculations using the dinuclear system (DNS) model. The DNS model also predicts the fusion cross section for this reaction with a fusion barrier height of 208.0 MeV. The deduced extra push energy, corresponding to this barrier height, differs from that deduced from evaporation residue measurements.
  • Capture-fission cross sections were measured for the near symmetric reaction between the massive nuclei {sup 124}Sn and {sup 96}Zr for center of mass energies from 195 to 265 MeV. Coincident fission fragments were detected and separated from elastic and deep inelastic scattering products by angle/energy/mass conditions. The measured capture cross sections agree quite well with calculations using the dinuclear system (DNS) model. The DNS model also predicts the fusion cross section for this reaction with a fusion barrier height of 208.0 MeV. The deduced extra push energy, corresponding to this barrier height, differs from that deduced from evaporation residue measurements.
  • In this contribution an experimental study of the deep-inelastic reaction {sub 40}{sup 96}Zr+{sub 50}{sup 124}Sn at 530 MeV, using the GASP and PRISMA-CLARA arrays, is presented. The experiments populate a wealth of projectile-like and target-like binary fragments, in a large neutron-rich region around N ≥ 50 and Z ≈ 40. Preliminary results on the study of the yrast and near-yrast states for {sup 95}Nb will be shown, along with a comparison of the experimental yields obtained in the experiments.
  • The complete and incomplete fusion cross sections for {sup 9}Be+{sup 124}Sn reaction have been deduced using the online {gamma}-ray measurement technique. Complete fusion at energies above the Coulomb barrier was found to be suppressed by {approx}28% compared to the coupled-channels calculations and is in agreement with the systematics of L. R. Gasques et al. [Phys. Rev. C 79, 034605 (2009)]. Study of the projectile dependence for fusion on a {sup 124}Sn target shows that, for {sup 9}Be nuclei, the enhancement at below-barrier energies is substantial compared to that of tightly bound nuclei.
  • Photoneutron cross sections were measured for {sup 96}Zr near neutron threshold with quasimonochromatic laser-Compton-scattering {gamma}-ray beams. A systematic analysis of photoneutron and radiative neutron capture data for zirconium isotopes within the statistical model calculation leads to a unified picture of low-energy {gamma}-ray strengths for zirconium isotopes that is described by the HFB + QRPA model of E1 strength supplemented with an extra {gamma} strength attributed to a giant M1 resonance. Results of the systematic analysis including radiative neutron capture cross sections for radioactive {sup 95}Zr and {sup 93}Zr nuclei are presented.