Breakup fusion theory of nuclear reactions

Thesis/Dissertation · Thu Jan 01 04:00:00 EST 1987

OSTI ID:5118384

Mastroleo, R C

Continuum spectra of particles emitted in incomplete fusion reactions are one of the major interests in current nuclear reaction studies. Based on an idea of the so-called breakup fusion (BF) reaction, several authors derived closed formulas for the singles cross section of the particles that are emitted. There have been presented, however, two conflicting cross section formulas for the same BF reaction. For convenience, we shall call one of them the IAV (Ichimura, Austern and Vincent) and the other UT (Udagawa and Tamura) cross section formulas. In this work, the formulation of the UT cross section formula (prior-form) is presented, and the post-form version of the IAV cross section formula is evaluted for a few {alpha}- and d-induced reactions based on the exact finite range method. It is shown that the values thus calculated are larger by an order of magnitude as compared with the experimental cross sections for the {alpha}-induced reactions, while they are comparable with the experimental cross sections for the d-induced reactions. A possible origin of why such a large cross section is resulted in the case of {alpha}-induced reactions is also discussed. Polarization of the residual compound nucleus produced in breakup fusion reactions are calculated and compared with experiments. It is shown that the polarization is rather sensitive to the deflection angles of the strongly absortive partial waves and to obtain a good fit with the experimental data a l-dependent potential in the incident channel is needed in order to stress the lower partial waves.

• Research Organization: Texas Univ., Austin, TX (USA)
• OSTI ID: 5118384
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700000* -- Fusion Energy
700100 -- Fusion Energy-- Plasma Research
BREAKUP REACTIONS
CALCULATION METHODS
CROSS SECTIONS
DATA ANALYSIS
INCOMPLETE FUSION REACTIONS
MATHEMATICAL MODELS
NUCLEAR REACTIONS