4{pi} studies of the 1.8{endash}4.8 GeV {sup 3}He+{sup nat}Ag, {sup 197}Au reactions. I. Energy deposition

Journal Article · Thu Aug 01 00:00:00 EDT 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.54.737· OSTI ID:288194

Morley, K B; Kwiatkowski, K; Bracken, D S; Renshaw Foxford, E; Viola, V E; Woo, L W; Yoder, N R ^[1]; Legrain, R; Pollacco, E C; Volant, C ^[2]; Korteling, R G ^[3]; Breuer, H ^[4]; Brzychczyk, J ^[5]

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1. Departments of Chemistry and Physics and Indiana University Cyclotron Facility, Indiana University, Bloomington, Indiana 47405 (United States)
2. Commissariat a l`Energie Atomique, DAPNIA Service de Physique Nucleaire, C.E. Saclay, 91191 Gir-sur-Yvette Cedex (France)
3. Department of Chemistry, Simon Fraser University, Burnaby, British Columbia (Canada)
4. University of Maryland, College Park, Maryland 20742 (United States)
5. Institute of Physics, Jagiellonian University, 30-059 Krakow (Poland)

The Indiana Silicon Sphere 4{pi} detector has been used to measure light-charged particles and intermediate-mass fragments (IMFs) emitted in the 18{endash}4.8 GeV {sup 3}He+{sup nat}Ag, {sup 197}Au reactions. Ejectile multiplicity and total event kinetic energy distributions scale systematically with projectile energy and target mass, except for the {sup nat}Ag target at 3.6 and 4.8 GeV. For this system, a saturation in deposition energy is indicated by the data, suggesting the upper projectile energy for stopping has been reached. Maximum deposition energies of {approximately}950 MeV for the {sup nat}Ag target and {approximately}1600 MeV for the {sup 197}Au target are inferred from the data. The results also demonstrate the importance of accounting for fast cascade processes in defining the excitation energy of the targetlike residue. Correlations between various observables and the average IMF multiplicity indicate that the total thermal energy and total observed charge provide useful gauges of the excitation energy of the fragmenting system. Comparison of the experimental distributions with intranuclear cascade predictions shows qualitative agreement. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 288194
• Journal Information: Physical Review, C, Vol. 54, Issue 2; Other Information: PBD: Aug 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ARGON
HELIUM 3 REACTIONS
GOLD 197 TARGET
ENERGY ABSORPTION
GEV RANGE 01-10
CHARGED PARTICLES
MASS
NUCLEAR FRAGMENTS
MULTIPLICITY
KINETIC ENERGY
DISTRIBUTION
EXCITATION
CORRELATIONS
NUCLEAR MATTER