Subthreshold pion production with associated multiplicity selection in the reaction /sup 139/La+ /sup 139/La. --> pi. +X

Journal Article · Mon Jun 08 00:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.58.2408· OSTI ID:6600582

Miller, J; Bercovitz, J; Claesson, G; Krebs, G; Roche, G; Schroeder, L S; Benenson, W; van der Plicht, J; Winfield, J S; Landaud, G; others, and

We have measured the energy and angular dependence of charged-pion production, with associated multiplicity selection, in La + La collisions at 138, 183, and 246 MeV/nucleon. The pions are produced mainly in collisions with a large number of participants. The general behavior of the spectra is consistent with results at higher energies, but the yield of subthreshold pions depends much more strongly upon the target and projectile mass. The pion spectra at 246 MeV/nucleon exhibit a strong charge dependence.

• Research Organization: Nuclear Science Division, Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098; AS05-76ER04699
• OSTI ID: 6600582
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 58:23
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
LANTHANUM 139 REACTIONS
INCLUSIVE INTERACTIONS
LANTHANUM 139 TARGET
ANGULAR DISTRIBUTION
CROSS SECTIONS
ENERGY SPECTRA
EXPERIMENTAL DATA
GEV RANGE 10-100
MULTIPLICITY
PIONS MINUS
PIONS PLUS
BOSONS
CHARGED-PARTICLE REACTIONS
DATA
DISTRIBUTION
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
HADRONS
HEAVY ION REACTIONS
INFORMATION
INTERACTIONS
MESONS
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE INTERACTIONS
PIONS
PSEUDOSCALAR MESONS
SPECTRA
TARGETS
651720* - Nuclear Properties & Reactions
A=90-149
Experimental