RECOIL STUDY OF THE REACTION Al$sup 27$(p,3pn)Na$sup 2$$sup 4$

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

OSTI ID:4731259

Poskanzer, A M; Cumming, J B; Wolfgang, R

In order to study the mechanism of a simple spallation reaction induced by Bev-energy protons, measurements were made of the momentum properties of Na/ sup 24/ nuclei produced from an aluminum target. Data were obtained on: (1) the fraction of Na/sup 24/ nuclei recoiling out of targets thick with respect to the range of the recoils (the targets were oriented both perpendicular and parallel to the proton beam); (2) the distribution of Na/sup 24/ ranges from a thin target measured with plastic catchers subtending an angle of 2 pi ; (3) the angular distribution of the Na/sup 24/ recoils with respect to the beam. Results of Monte Carlo knock-on cascade and evaporation calculations for 0.36- and 1.8-Bev bombarding energies are compared with the data in the laboratory system. The calculations predict sharper sideways peaking in the angular distributions, and more momentum deposition at the higher bombarding energy, than are observed. The experimental data are also reduced to a set of velocity vectors which is then interpreted in terms of a simple, constantdeposition-energy mechanism in which the incident proton makes only one quasi-elastic collision with a single nucleon which does not escape from the nucleus. This treatment accounts for most of the data but also predicts a much larger sideways peaking in the angular distribution than is observed. (auth)

• Research Organization: Brookhaven National Lab., Upton, N.Y.
• NSA Number: NSA-17-007230
• OSTI ID: 4731259
• Report Number(s): BNL-6311; 0031-899X
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 129; ISSN PHRVA
• Country of Publication: United States
• Language: English

Related Subjects

ACIDITY
ADSORPTION
ALUMINUM
ALUMINUM 27
ANGULAR DISTRIBUTION
BARIUM
COATING
ELECTRIC DISCHARGES
ELECTROLYTES
ELECTRON TUBES
ELECTROPLATING
EVAPORATION
GASES
INSTRUMENTS
IONIZATION
MAGNESIUM
MANOMETERS
MASS SPECTROMETERS
MEASURED VALUES
MOMENTUM
MONTE CARLO METHOD
NEUTRONS
NUCLEAR REACTIONS
NUMERICALS
PHYSICS
POLYMERS
PROTONS
QUANTITATIVE ANALYSIS
RECOILS
RESIDUES
SCATTERING
SLOWDOWN
SODIUM 24
SOLUTIONS
SPARKS
SURFACES
TARGETS
TESTING
TRAPS
U3O8
URANIUM OXIDES
VACUUM
VECTORS
VELOCITY
ZINC