Transfer and breakup processes in reactions of 11- and 17-MeV/nucleon /sup 20/Ne+ /sup 197/Au

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.32.894· OSTI ID:5297360

Wald, S; Gazes, S B; Albiston, C R; Chan, Y; Harvey, B G; Murphy, M J; Tserruya, I; Stokstad, R G; Countryman, P J; Van Bibber, K

The mechanisms of transfer and breakup in heavy-ion-induced reactions have been studied for the /sup 20/Ne+ /sup 197/Au system at bombarding energies of 220 and 341 MeV. A 4..pi.. detector was used to separate reactions leading to the production of projectilelike fragments into components having either two charged bodies in the final state (transfer) or three or more charged fragments (breakup). For both components, angular distributions, energy spectra, and production cross sections are shown for projectile fragments of Z = 3--9. The ratio of transfer to inclusive yields initially drops steeply with decreasing ejectile charge, leveling off for Z< or =7. The lower bounds on this ratio are approx. =60% and approx. =30% at 220 and 341 MeV, respectively. At 341 MeV, the trends in the central moments (mean, width, and skewness) of the ejectile energy spectra, as a function of Z, are similar for transfer and breakup. The primary ejectile yields are deduced from the breakup and transfer cross sections, and comparisons are made with the predictions of various models. The relatively large probabilities for primary ejectiles to be produced in charged-particle-bound states, observed for all Z and at both 220 and 341 MeV, indicate that, on average, most of the excitation energy resides in the heavy, targetlike fragment.

• Research Organization: Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• OSTI ID: 5297360
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 32:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651925* -- Nuclear Properties &amp; Reactions
A=190-219
Experimental-- Nuclear Reactions &amp; Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BOUND STATE
BREAKUP REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIRECT REACTIONS
DISTRIBUTION
ENERGY
ENERGY RANGE
ENERGY SPECTRA
GOLD 197 TARGET
HEAVY ION REACTIONS
KINETIC ENERGY
MEV RANGE
MEV RANGE 100-1000
NEON 20 REACTIONS
NUCLEAR REACTIONS
SPECTRA
TARGETS
TRANSFER REACTIONS