Quasifree subthreshold pion production in the reaction sup 12 C( p , d. pi. sup + ) sup 11 B

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.45.1745· OSTI ID:7043979

Cowley, A A ^[1]; Roos, P G ^[2]; Lawrie, J J; Smit, F D; Pilcher, J V; Foertsch, S V; Steyn, G F; Hillhouse, G C ^[1]

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1. National Accelerator Centre, Faure, 7131 (South Africa)
2. Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742 (United States)

Nuclear pion production has been studied by means of the reaction {sup 12}C({ital p},{ital d}{pi}{sup +}){sup 11}B at an incident energy of 223 MeV, which is considerably below the threshold for a free {ital N}-{ital N} process. The shape and absolute cross section of the experimental energy-sharing distribution are in remarkable agreement with the prediction of a distorted-wave impulse approximation theory. This shows that the reaction mechanism is quasifree pion production, which is related to the elementary reaction {ital p}+{ital p}{r arrow}{pi}{sup +}+{ital d}.

• OSTI ID: 7043979
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 45:4; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
663520 -- Nuclear Mass Ranges-- A=6-19-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BORON 11
BORON ISOTOPES
CARBON 12 TARGET
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DEUTERONS
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
ENERGY RANGE
HADRON REACTIONS
IMPULSE APPROXIMATION
ISOTOPES
LIGHT NUCLEI
MESON REACTIONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PION PLUS REACTIONS
PION REACTIONS
PROTON REACTIONS
QUASI-FREE REACTIONS
STABLE ISOTOPES
TARGETS