Study of breakup and breakup-fusion mechanisms for light and heavy ion reactions

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5982708

Price, D R

Recently, the study of both light and heavy ion breakup and breakup-fusion has generated a great deal of interest as an important reaction mechanism in nuclear reactions leading to the continuum. In order to calculate the breakup-fusion cross section, previous approaches depended upon the zero-range approximation as well as peripheral assumption. A much better and rigorous formulation of the breakup-fusion calculation has been given by Kerman and McVoy (KM), and also by Udagawa and Tamura (UT). Both formulations give the same breakup-fusion cross section. The cross section derived by KM and UT is free of approximation such as the peripheral assumption, and for this reason provides a superior basis for the study of breakup-fusion. The aim of the present work is to perform a detailed study of the breakup and breakup-fusion processes based on the formalism developed by UT. This formalism is presented in great detail, as well as the method of performing actual numerical calculations. The previous approach is shown to be derived from that of UT by the introduction of four significant approximations. The advantage of the method of UT is then evident. Agreement with the high energy tail at large scattering angles for heavy ion breakup and breakup-fusion is demonstrated for the reaction /sup 181/Ta(/sup 14/N,/sup 4/He) at 115 MeV. The deep peripheral nature of the breakup-fusion process is demonstrated. The UT approach is applied to the case of high energy light ion breakup, in particular /sup 62/Ni(/sup 4/He,/sup 3/Hen) at 172.5 MeV. The experimental data is underestimated by two order of magnitude at forward angles.

• Research Organization: Texas Univ., Austin (USA)
• OSTI ID: 5982708
• Country of Publication: United States
• Language: English

Related Subjects

651615 -- Nuclear Properties & Reactions
A=59-89
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
BREAKUP REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
ENERGY RANGE
FUSION REACTIONS
HEAVY ION REACTIONS
INFORMATION
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NICKEL 62 TARGET
NITROGEN 14 REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE MODELS
PERIPHERAL MODELS
TANTALUM 181 TARGET
TARGETS
THEORETICAL DATA