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Inclusive. pi. /sup -/ production with 200 MeV protons: Radiochemical study of the /sup 209/Bi(p,. pi. /sup -/xn)/sup 210-x/ At reactions

Journal Article · · Phys. Rev. C; (United States)
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The results of a radiochemical study of the /sup 209/Bi(p,..pi../sup -/xn)/sup 210-x/At reactions for x = 0 to 5 are reported. 200 MeV protons were utilized in an investigation of these pion production reactions as well as secondary processes such as /sup 209/Bi(p,/sup 3,4/He)X followed by /sup 209/Bi(/sup 3,4/He,xn)/sup 213-x/ At. The relative importance of such secondary reactions was reduced through variation of the target thickness and from a survey of available data from on-line investigations of /sup 3,4/He production by other medium energy proton-induced reactions on /sup 209/Bi. An inclusive cross section of 48 +- 13 ..mu..b is determined for the /sup 209/Bi(p,..pi../sup -/xn)/sup 210-x/At reactions at 200 MeV. The relative yields of such (p,..pi../sup -/xn) products are found to be suggestive of a pion production mechanism involving ..pi../sup -/ emission through coherent interactions with the target nucleons.
Research Organization:
Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973
OSTI ID:
6790029
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 26:5; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651925* -- Nuclear Properties & Reactions
A=190-219
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTATINE
BARYON REACTIONS
BARYONS
BISMUTH 209 TARGET
BOSONS
CHARGED-PARTICLE REACTIONS
CHEMISTRY
CROSS SECTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
EVEN-EVEN NUCLEI
FERMIONS
GAMMA SPECTRA
HADRON REACTIONS
HADRONS
HALOGENS
HELIUM 3 REACTIONS
HELIUM 4
HELIUM ISOTOPES
INCLUSIVE INTERACTIONS
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MESONS
MEV RANGE
MEV RANGE 100-1000
NEUTRONS
NONMETALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PIONS MINUS
PROTON REACTIONS
PSEUDOSCALAR MESONS
RADIOCHEMISTRY
SPECTRA
STABLE ISOTOPES
TARGETS