Evaporation residues from the fusion of /sup 32/S with /sup 58/Ni and /sup 70/Ge observed with an energy-mass spectrograph

Journal Article · Sun Jan 01 00:00:00 EST 1978 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.17.118· OSTI ID:5032600

Horn, D; Enge, H A; Sperduto, A; Graue, A

Evaporation residues from the fusion reactions of 110 MeV /sup 32/S with /sup 58/Ni and 132 MeV /sup 32/S with /sup 70/Ge were observed with the aid of an energy-mass spectrograph. The residues were resolved by mass number, and the masses observed in the /sup 32/S + /sup 58/Ni reaction were A = 84 (23% +- 5%), A = 86 (27% +- 5%), and A = 87 (50% +- 10%). The /sup 32/S + /sup 70/Ge reaction yielded A = 94 (14% +- 1%), A = 95 (23% +- 1%), A = 96 (14% +- 1%), A = 97 (24% +- 1%), A = 98 (21% +- 1%), and A = 99 (5% +- 1%). Angular distributions and velocity spectra were obtained for each mass, allowing partial reconstruction of the residues' kinematic history, and consequently of the particle evaporation modes leading to each residue. Average particle energies and anisotropies for each residue mass may be inferred from comparison with a Monte Carlo simulation of the evaporation process. The results are discussed and compared with calculations made with the aid of a statistical model evaporation code.

• Research Organization: Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 5032600
• Journal Information: Phys. Rev., C; (United States), Vol. 17:1
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
GERMANIUM 70 TARGET
SULFUR 32 REACTIONS
NICKEL 58 TARGET
FUSION REACTIONS
ANGULAR DISTRIBUTION
EVAPORATION MODEL
MASS SPECTRA
MEV RANGE 100-1000
TIME-OF-FLIGHT METHOD
TOTAL CROSS SECTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ENERGY RANGE
HEAVY ION REACTIONS
MATHEMATICAL MODELS
MEV RANGE
NUCLEAR MODELS
NUCLEAR REACTIONS
SPECTRA
TARGETS
651525* - Nuclear Properties & Reactions
A=39-58
Experimental- Nuclear Reactions & Scattering- (-1987)
651625 - Nuclear Properties & Reactions
A=59-89
Experimental- Nuclear Reactions & Scattering- (-1987)