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Subbarrier fusion of the oxygen isotopes


Pönisch, Volker (1986) Subbarrier fusion of the oxygen isotopes. Dissertation (Ph.D.), California Institute of Technology.


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 ^(16)O + ^(16)O. An IWBC coupled channels calculation for ^(17)O + ^(16)O 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 ^(18)O + ^(16)O 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:
  • Unknown, Unknown
Defense Date:19 May 1986
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 By: John Wade
Deposited On:30 Jun 2010 18:15
Last Modified:26 Dec 2012 04:29

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