Pion production cross sections and analyzing powers in the inclusive /sup 12/C(p,. pi. /sup +/)X reaction at 400 and 450 MeV

Journal Article · Sat Mar 01 04:00:00 UTC 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.988· OSTI ID:6097164

Falk, W R; Auld, E G; Giles, G; Jones, G; Lolos, G J; Ziegler, W; Walden, P L

Inclusive differential cross sections and analyzing powers of the (p,..pi../sup +/) reaction on /sup 12/C have been obtained at 400 and 450 MeV incident proton energies. The energy domain investigated spans the region of pion energies that arise in the pp..-->..d..pi../sup +/ reaction, a reaction which was measured at the same time. A 65 cm Browne-Buechner spectrometer, in a single-arm configuration, was used for detecting the pions. Measurements were made in the angular range of 46/sup 0/--88/sup 0/ (lab). At forward angles the measured analyzing powers in the /sup 12/C(p,..pi../sup +/)X reaction are quantitively similar to those of the pp..-->..d..pi../sup +/ and pp..-->..pn..pi../sup +/ reactions, but at backward angles they are considerably more negative. The analyzing power data for angles < or approx. =70/sup 0/ (lab) are consistent with the predictions of a simple quasifree model that incorporates the free pN..-->..NN..pi../sup +/ data. Moreover, this model makes a reasonable prediction of the overall strength of the differential cross sections and also reproduces the qualitative shape of the pion energy distributions.

• Research Organization: Physics Department, University of Manitoba, Winnipeg, Manitoba, Canada
• OSTI ID: 6097164
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 33:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651325* -- Nuclear Properties &amp; Reactions
A=6-19
Experimental-- Nuclear Reactions &amp; Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
ANGULAR DISTRIBUTION
BARYON REACTIONS
BOSONS
CAPTURE
CARBON 12 TARGET
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DEUTERONS
DIFFERENTIAL CROSS SECTIONS
DIRECT REACTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
EXPERIMENTAL DATA
HADRON REACTIONS
HADRONS
INCLUSIVE INTERACTIONS
INFORMATION
INTERACTIONS
MEASURING INSTRUMENTS
MESONS
MEV RANGE
MEV RANGE 100-1000
MULTIWIRE PROPORTIONAL CHAMBERS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PARTICLE PRODUCTION
PIONS
PIONS PLUS
PROPORTIONAL COUNTERS
PROTON REACTIONS
PSEUDOSCALAR MESONS
QUASI-FREE REACTIONS
RADIATION DETECTORS
SPECTRA
TARGETS
TOTAL CROSS SECTIONS