Probing the direct step of relativistic heavy-ion fragmentation (/sup 12/C, /sup 11/B + p) at 2. 1 GeV/nucleon with C and CH/sub 2/ targets
Thesis/Dissertation
·
OSTI ID:5919220
The authors have measured the momentum distributions and the excitation energy of the p, /sup 11/B pair in the (/sup 12/C, /sup 11/B + p) reaction at 2.1 GeV/nucleon with C and CH/sub 2/ targets. The cross section separates into three regions: (1) nucleon-nucleon quasi-elastic scattering, (2) nucleon-nucleon inelastic scattering, and (3) a low excitation energy and momentum transfer peak. The cross sections, by region, are: (1) 8.8 +/- 2.5 mb, (2) 10.1 +/- 2.2 mb, and (3) 0.81 +/- 0.45 mb for H(/sup 12/C, /sup 11/B + p)X, and (1) 11.1 +/- 2.4 mb, (2) 24.1 +/- 3.7 mb, and (3) 4.50 +/- 0.67 mb for C(/sup 12/C, /sup 11/B + p)X. All errors are standard deviations. The shapes of the first two regions can be fit with a nucleon-nucleon cascade model including ..pi.. production. However, the cascade model prediction for the quasi-elastic component is too large by a factor of three. The peak is consistent with two mechanisms, (1) an excitation and decay via proton emission of the carbon projectile, and (2) a projectile proton scattering diffractively off the C target. Finally, the Fermi momentum determined from the transverse momentum distribution is 160 +/- 11 MeV/c compared with 190 +/- 11 MeV/c from the longitudinal momentum distribution.
- Research Organization:
- California Univ., Davis (USA)
- OSTI ID:
- 5919220
- Country of Publication:
- United States
- Language:
- English
Similar Records
Probing the direct step of relativistic heavy ion fragmentation: (/sup 12/C,/sup 11/B + p) at 2. 1 GeV/nucleon with C and CH/sub 2/ targets
QUASI-ELASTIC SCATTERING OF 153-Mev PROTONS BY PROTONS IN THE p STATE OF C$sup 1$$sup 2$
/sup 12/C + /sup 12/C transfer reactions at 93. 8 MeV
Journal Article
·
Wed Jul 01 00:00:00 EDT 1987
· Phys. Rev. C; (United States)
·
OSTI ID:5977993
QUASI-ELASTIC SCATTERING OF 153-Mev PROTONS BY PROTONS IN THE p STATE OF C$sup 1$$sup 2$
Journal Article
·
Sun May 01 00:00:00 EDT 1960
· Journal de Physique et le Radium (France) Changed to J. Phys. (Orsay, Fr.)
·
OSTI ID:4168008
/sup 12/C + /sup 12/C transfer reactions at 93. 8 MeV
Journal Article
·
Wed Aug 01 00:00:00 EDT 1979
· Phys. Rev., C; (United States)
·
OSTI ID:5977757
Related Subjects
651220 -- Nuclear Properties & Reactions
A=1-5
Experimental
651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BARYONS
BORON 11
BORON ISOTOPES
BREAKUP REACTIONS
CARBON
CARBON 12 REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIRECT REACTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION REACTIONS
HYDROGEN
INFORMATION
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MOMENTUM TRANSFER
NONMETALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
PARTICLE INTERACTIONS
PROTONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
SCATTERING
STABLE ISOTOPES
A=1-5
Experimental
651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON-BARYON INTERACTIONS
BARYONS
BORON 11
BORON ISOTOPES
BREAKUP REACTIONS
CARBON
CARBON 12 REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DIRECT REACTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FERMIONS
GEV RANGE
GEV RANGE 10-100
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY ION REACTIONS
HYDROGEN
INFORMATION
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MOMENTUM TRANSFER
NONMETALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
PARTICLE INTERACTIONS
PROTONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
SCATTERING
STABLE ISOTOPES