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/sup 3/He(. pi. /sup -/,. pi. /sup 0/) reaction at T/sub. pi. / = 200 MeV

Journal Article · · Phys. Rev. C; (United States)
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Energy and angle differential cross sections for the /sup 3/He(..pi../sup -/,..pi../sup 0/) reaction at T/sub ..pi../ = 200 MeV have been measured. Angular distributions for the isobaric analog state and the energy integrated continuum have been obtained from 0 to 90/sup 0/. The excitation of the analog state seems to be best represented by Glauber model calculations with nuclear wave functions suitable to explain electron scattering, but all model calculations underestimate the forward angles by 1.5 standard errors. The continuum angular distribution has the same shape as the free p(..pi../sup -/,..pi../sup 0/)n reaction except at forward angles, where the cross section is suppressed by Pauli blocking of the final state. The total isobaric analog state cross section is 6.29 +- 0.94 mb and the total charge exchange cross section from 0 to 90/sup 0/ is 28.4 +- 3.8 mb. The latter is one-half the plane wave impulse approximation value.
Research Organization:
Los Alamos National Laboratory, Los Alamos, New Mexico 87545
OSTI ID:
5727791
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 25:1; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651225* -- Nuclear Properties & Reactions
A=1-5
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANGULAR DISTRIBUTION
BARYON-BARYON INTERACTIONS
BOSONS
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
FUNCTIONS
GLAUBER THEORY
HADRON REACTIONS
HADRON-HADRON INTERACTIONS
HADRONS
HELIUM 3 TARGET
IMPULSE APPROXIMATION
INTERACTIONS
ISOBARIC ANALOGS
LAMPF LINAC
LINEAR ACCELERATORS
MESON FACTORIES
MESON REACTIONS
MESONS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEON-NUCLEON INTERACTIONS
OPTICAL MODELS
PARTICLE INTERACTIONS
PION MINUS REACTIONS
PION REACTIONS
PIONS
PIONS NEUTRAL
PSEUDOSCALAR MESONS
TARGETS
WAVE FUNCTIONS