skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on June 11, 2021

Title: Enhanced dynamics in fusion of neutron-rich oxygen nuclei at above-barrier energies

Abstract

Above-barrier fusion cross sections for an isotopic chain of oxygen isotopes with A = 16 –19 incident on a C 12 target are presented. Experimental data are compared with both static and dynamical microscopic calculations. Here, these calculations are unable to explain the 37 % increase in the average above-barrier fusion cross section observed for O 19 as compared to β -stable oxygen isotopes. This result suggests that for neutron-rich nuclei existing time-dependent Hartree-Fock calculations underpredict the role of dynamics at near-barrier energies. High-quality measurement of above-barrier fusion for an isotopic chain of increasingly neutron-rich nuclei offers an effective means to probe this fusion dynamics.

Authors:
 [1];  [1];  [2];  [3]; ORCiD logo [1]
  1. Indiana Univ., Bloomington, IN (United States)
  2. Vanderbilt Univ., Nashville, TN (United States)
  3. Indiana Univ., Bloomington, IN (United States); Arizona State Univ., Tempe, AZ (United States)
Publication Date:
Research Org.:
Vanderbilt Univ., Nashville, TN (United States); Indiana Univ., Bloomington, IN (United States); Michigan State Univ., East Lansing, MI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
OSTI Identifier:
1633181
Alternate Identifier(s):
OSTI ID: 1646994; OSTI ID: 1660444
Grant/Contract Number:  
SC0013847; FG02-88ER40404; SC0018083; PHY-1613708; FG02-87ER40365
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 101; Journal Issue: 6; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; TDHF; Fusion; Low & intermediate energy heavy-ion reactions; Nuclear astrophysics; Nuclear fusion; Nuclear reactions; 6 ≤ A ≤ 19; fusion; fusion dynamics; neutron-rich fusion; nuclear reactions with radioactive beams

Citation Formats

Hudan, S., deSouza, R. T., Umar, A. S., Lin, Z., and Horowitz, C. J. Enhanced dynamics in fusion of neutron-rich oxygen nuclei at above-barrier energies. United States: N. p., 2020. Web. doi:10.1103/PhysRevC.101.061601.
Hudan, S., deSouza, R. T., Umar, A. S., Lin, Z., & Horowitz, C. J. Enhanced dynamics in fusion of neutron-rich oxygen nuclei at above-barrier energies. United States. doi:https://doi.org/10.1103/PhysRevC.101.061601
Hudan, S., deSouza, R. T., Umar, A. S., Lin, Z., and Horowitz, C. J. Thu . "Enhanced dynamics in fusion of neutron-rich oxygen nuclei at above-barrier energies". United States. doi:https://doi.org/10.1103/PhysRevC.101.061601.
@article{osti_1633181,
title = {Enhanced dynamics in fusion of neutron-rich oxygen nuclei at above-barrier energies},
author = {Hudan, S. and deSouza, R. T. and Umar, A. S. and Lin, Z. and Horowitz, C. J.},
abstractNote = {Above-barrier fusion cross sections for an isotopic chain of oxygen isotopes with A=16–19 incident on a C12 target are presented. Experimental data are compared with both static and dynamical microscopic calculations. Here, these calculations are unable to explain the ≈37% increase in the average above-barrier fusion cross section observed for O19 as compared to β-stable oxygen isotopes. This result suggests that for neutron-rich nuclei existing time-dependent Hartree-Fock calculations underpredict the role of dynamics at near-barrier energies. High-quality measurement of above-barrier fusion for an isotopic chain of increasingly neutron-rich nuclei offers an effective means to probe this fusion dynamics.},
doi = {10.1103/PhysRevC.101.061601},
journal = {Physical Review C},
number = 6,
volume = 101,
place = {United States},
year = {2020},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on June 11, 2021
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Charge-changing cross sections of the neutron-rich isotopes8,9,11Li
journal, December 1992

  • Blank, B.; Gaimard, J. -J.; Geissel, H.
  • Zeitschrift für Physik A Hadrons and Nuclei, Vol. 343, Issue 4
  • DOI: 10.1007/BF01289813

Heavy-ion interaction potential deduced from density-constrained time-dependent Hartree-Fock calculation
journal, August 2006


A program for coupled-channel calculations with all order couplings for heavy-ion fusion reactions
journal, December 1999


Three-dimensional unrestricted time-dependent Hartree-Fock fusion calculations using the full Skyrme interaction
journal, May 2006


Measurements of Interaction Cross Sections and Nuclear Radii in the Light p -Shell Region
journal, December 1985


Microscopic sub-barrier fusion calculations for the neutron star crust
journal, May 2012


Effects of transfer channels on near- and sub-barrier fusion of 32 S + 48 Ca
journal, January 2013


Total and 2n-removal cross sections of the neutron-rich isotopes 8,9,11Li
journal, April 1993


Dynamic effects of breakup on fusion reactions of weakly bound nuclei
journal, April 2009


Nuclear size and related topics
journal, October 2001


Coulomb dissociation of a halo nucleus 11Be at 72A MeV
journal, July 1994


Simple analytic model for astrophysical S factors
journal, October 2010


Systematics of carbon- and oxygen-induced fusion on nuclei with 12 A 19
journal, October 1979


Fusion enhancement at near and sub-barrier energies in 19 O +  12 C
journal, February 2017


Probing the fusion of neutron-rich nuclei with re-accelerated radioactive beams
journal, March 2018


Nuclear size and boundary effects on the fusion barrier of oxygen with carbon
journal, April 1976


Proton Radii of B 12 17 Define a Thick Neutron Surface in B 17
journal, September 2014


Entrance channel effect for complete fusion of O + C isotopes
journal, August 1982


Confronting measured near- and sub-barrier fusion cross sections for 20 O+ 12 C with a microscopic method
journal, July 2013


Sub-barrier fusion of 11Li with 208Pb
journal, August 2018

  • Loveland, Walter; Vinodkumar, A. M.; Yanez, Ricardo
  • The European Physical Journal A, Vol. 54, Issue 8
  • DOI: 10.1140/epja/i2018-12572-8

Large collection of astrophysical S factors and their compact representation
journal, May 2012


Resonances in the O 16 + C 12 fusion cross section between E c . m . = 12   and   20 MeV
journal, February 1982


Interaction Barrier in Charged-Particle Nuclear Reactions
journal, September 1973


Measurements of interaction cross sections and radii of He isotopes
journal, October 1985


Astrophysical S factors for fusion reactions involving C, O, Ne, and Mg isotopes
journal, September 2010

  • Beard, M.; Afanasjev, A. V.; Chamon, L. C.
  • Atomic Data and Nuclear Data Tables, Vol. 96, Issue 5
  • DOI: 10.1016/j.adt.2010.02.005

Neutron skin and signature of the N = 14 shell gap found from measured proton radii of 17−22N
journal, March 2019


Global and consistent analysis of the heavy-ion elastic scattering and fusion processes
journal, March 2004


Relativistic mean field theory in finite nuclei
journal, January 1996


Current status of r -process nucleosynthesis
journal, July 2019


Sub-barrier enhancement of fusion as compared to a microscopic method in O 18 + C 12
journal, October 2014


Channel-coupling effects in heavy-ion fusion reactions
journal, August 1983


Fusion of neutron-rich oxygen isotopes in the crust of accreting neutron stars
journal, April 2008


Role of Coulomb and nuclear breakups in the interaction of 8B with 12C
journal, October 2012