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Subbarier Fusion of the Oxygen Isotopes


Pönisch, Volker (1986) Subbarier Fusion of the Oxygen Isotopes. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/KZX1-P789.


The subbarrier fusion process is studied for systems involving oxygen isotopes. A one-channel incoming wave boundary condition (IWBC) calculation gives an excellent fit to fusion cross section data for 16O+16O. An IWBC coupled channels calculation for 17O+16O that includes inelastic excitations as well as one-neutron transfer with formfactors calculated in a consistent single-particle framework reproduces the subbarrier enhancement down to four fifths the barrier height, but not below that. The calculation does not invoke the adiabatic approximation, which would create non-unitarity in the coupled channels equations. The measured subbarrier fusion cross section for 18O+16O is well reproduced by an IWBC coupled channels calculation with two-neutron transfer, but the calculation disagrees with the above-barrier data.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Physics
Degree Grantor:California Institute of Technology
Division:Physics, Mathematics and Astronomy
Major Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Koonin, Steven E.
Thesis Committee:
  • Koonin, Steven E. (chair)
  • Barnes, Charles A.
  • Prince, Thomas A.
  • Politzer, Hugh David
  • Winther, Aage
Defense Date:19 May 1986
Funding AgencyGrant Number
Record Number:CaltechTHESIS:06302010-080153741
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5966
Deposited On:30 Jun 2010 18:15
Last Modified:21 Dec 2019 02:15

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