Effects of entrance channel and compound nucleus in the fusion cross sections for 28Si+ 28Si, 16O+ 40Ca, 32S+ 30Si, and 12C+ 50Cr
- 1. Institute of Physics and Tandem Accelerator Center, University of Tsukuba, Ibaraki 305, Japan
Description
In order to study the physics responsible for a limitation in angular momentum in heavy-ion fusion reactions, fusion cross sections for the reactions 28Si+ 28Si, 16O+ 40Ca, 32S+ 30Si, and 12C+ 50Cr have been measured at several incident energies covering lower and higher energy regions by detecting the yields of the fusion-evaporation residues. The limiting angular momenta for fusion are extracted from the measured fusion cross sections and compared with calculations based upon several models. Through the systematic study of different entrance channels forming the same compound nucleus, a strong entrance channel effect has been observed for very asymmetric systems. Our conclusion is that the entrance channel is significant in limiting the fusion cross section in the higher energy region
Additional details
Publishing Information
- Journal Title
- Phys. Rev., C
- Journal Volume
- 33
- Journal Issue
- 1
- Series
- Phys. Rev., C.
- Journal Page Range
- 176-184
- ISSN
- 0556-2813
- CODEN
- PRVCA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 17042707
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ANGULAR MOMENTUM; CALCIUM 40 TARGET; CARBON 12 REACTIONS; CHROMIUM 50 TARGET; COMPOUND-NUCLEUS REACTIONS; CROSS SECTIONS; EVAPORATION MODEL; HEAVY ION FUSION REACTIONS; OXYGEN 16 REACTIONS; SILICON 28 REACTIONS; SILICON 28 TARGET; SILICON 30 TARGET; STATISTICAL MODELS; SULFUR 32 REACTIONS; YRAST STATES
- Descriptors DEC
- ENERGY LEVELS; HEAVY ION REACTIONS; MATHEMATICAL MODELS; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEOSYNTHESIS; SYNTHESIS; TARGETS