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Linear momentum transfer in nonrelativistic nucleus-nucleus collisions

Journal Article · · Phys. Rev. C; (United States)
; ; ; ; ;
The systematic behavior of linear momentum transfer from projectile to target in nonrelativistic nucleus-nucleus collisions has been studied using the results of fission-fragment angular-correlation measurements on uranium target nuclei. Data for /sup 4/He, /sup 12/C, /sup 16/O, and /sup 20/Ne projectiles have been analyzed over an energy range which extends well above the interaction barrier. The data illustrate the division of the total reaction cross section into two primary components: one associated with approx. 90 percent or greater linear momentum transfer and the other involving much smaller amounts of linear momentum transfer. The former is attributed to fusionlike collisions and the latter to peripheral collisions. The minimum between these two components corresponds to a linear momentum transfer of about 50 percent. It is observed that the ratio of fusionlike collisions to the total reaction cross section decreases regularly as a function of both increasing bombarding energy and projectile mass. From comparison of the experimental fission-fragment angular correlation functions with the predictions of complete fusion kinematics, it is shown that above 10 MeV/ nucleon, the experimental definition of complete fusion is complicated by the increasing probability for large, but incomplete, linear momentum transfer collisions. Estimates of critical angular momenta derived from these data do not show any major disagreement with rotating-liquid-drop predictions.
Research Organization:
Department of Chemistry and Cyclotron Facility, Indiana University, Bloomington, Indiana 47405
OSTI ID:
5013438
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Journal Issue: 1 Vol. 26:1; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

652025* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
652026 -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDES
ALPHA REACTIONS
ANGULAR CORRELATION
CARBON 12 REACTIONS
CHARGED-PARTICLE REACTIONS
CORRELATIONS
CROSS SECTIONS
DATA
ELEMENTS
ENERGY DEPENDENCE
EXPERIMENTAL DATA
FISSION
FISSION FRAGMENTS
FUSION REACTIONS
HEAVY ION REACTIONS
INFORMATION
LINEAR MOMENTUM TRANSFER
METALS
MOMENTUM TRANSFER
NEON 20 REACTIONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 REACTIONS
TOTAL CROSS SECTIONS
URANIUM