Coincidence measurement between. cap alpha. -particles and projectile-like fragments in the reaction of 82. 7 MeV /sup 16/O on /sup 27/Al

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Chin. Phys.; (United States)

OSTI ID:5158766

Wenqing, Shen; Wenlong, Zhan; Yongtai, Zhu; Shuzhi, Yin; Zhongyan, Guo; Weimin, Qiao; Guoying, Fan; Genming, Jin; Songling, Li; Zhen, Zhang

In a coincidence measurement between ..cap alpha..-particles and projectile-like fragments in the reaction of 82.7 MeV /sup 16/O on /sup 27/Al, the contour plot of Galilean-invariant cross section of the coincidence between C-fragments and ..cap alpha..-particles in the velocity plane, and the coincident angular correlation have been obtained. The correlated ..cap alpha..-particles measured at positive angles (on the same side of the beam as the projectile-like fragments) were emitted mainly from the projectile-like fragments;the ..cap alpha..-particles at large negative angles were emitted from the target-like fragments;the ..cap alpha..-particles at small negative angles came from the fragmentation of the /sup 16/O projectile. A possible reaction mechanism in which the residue produced in the fragmentation of the projectile continues the dissipation process during the interaction with the target has been discussed. It is also pointed out that in the large yield of C-fragments observed in the inclusive experiment, the contribution of C-fragments produced by the excited /sup 16/O of DIC product via ..cap alpha..-emission is quite small

• Research Organization: Institute of Modern Physics, Academia Sinica, Lanzhou
• OSTI ID: 5158766
• Journal Information: Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 8:1; ISSN CHPHD
• Country of Publication: United States
• Language: English

Related Subjects

651420* -- Nuclear Properties & Reactions
A=20-38
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ALUMINIUM 27 TARGET
ANGULAR CORRELATION
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
CORRELATIONS
COUNTING TECHNIQUES
CROSS SECTIONS
ENERGY RANGE
FRAGMENTATION
HEAVY ION REACTIONS
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
OXYGEN 16 REACTIONS
TARGETS