Coincident proton emission induced by 200 MeV protons on [sup 197]Au

Journal Article · Sun Aug 01 04:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.743· OSTI ID:6275922

Foertsch, S V ^[1]; Cowley, A A ^[2]; Lawrie, J J; Pilcher, J V; Smit, F D; Whittal, D M ^[1]

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1. National Accelerator Centre, P.O. Box 72, Faure, 7131 (South Africa)
2. Department of Physics, University of Stellenbosch, Stellenbosch, 7600 (South Africa)

Coincident cross sections were measured for the reaction [sup 197]Au([ital p],[ital p][prime][ital p][prime][prime]) at an incident energy of 200 MeV. The protons emitted from the continuum were detected at primary laboratory angles of [minus]40[degree], [minus]50[degree], and [minus]60[degree], for secondary angles ranging between 20[degree] and 150[degree]. The theoretical model which was used to interpret the coincident spectra describes the reaction mechanism in terms of a quasifree nucleon-nucleon interaction between the projectile and a bound target nucleon, folded with a probability for emission of the quasifree knocked-on nucleon after inelastic rescattering off the residual target nucleus. The validity of the distorted-wave impulse approximation which describes the initial quasifree interaction was confirmed by measuring the quasifree knockout of valence-orbital protons from [sup 197]Au. The measured coincident continuum cross sections were then compared with model calculations for primary proton energy cuts around 90, 70, and 40 MeV. The reasonable agreement found between the calculated and measured cross sections indicates that the signature of quasifree scattering persists in the continuum emission from a nucleus as heavy as [sup 197]Au, and is not obscured by multiple scattering efects.

• OSTI ID: 6275922
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:2; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
663580 -- Nuclear Mass Ranges-- A=190-219-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYON-BARYON INTERACTIONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
COINCIDENCE SPECTROMETRY
COUNTING TECHNIQUES
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
DISTORTED WAVE THEORY
ENERGY RANGE
GOLD 197 TARGET
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
IMPULSE APPROXIMATION
INELASTIC SCATTERING
INTERACTIONS
KNOCK-OUT REACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PROTON REACTIONS
SCATTERING
TARGETS