Accession Number : AD0478178


Title :   A SEARCH FOR ANTIPROTONS AND STUDY OF PARTICLE PRODUCTION IN 3-BEV PROTON-NUCLEUS COLLISIONS.


Descriptive Note : Technical rept. Oct 63-Jan 66,


Corporate Author : PRINCETON UNIV N J ELEMENTARY PARTICLES LAB


Personal Author(s) : Smith,A. J. Stewart


Report Date : 24 JAN 1966


Pagination or Media Count : 130


Abstract : In two counter experiments at the Princeton-Pennsylvania Accelerator, a study has been made of 2.9 BeV proton-nucleus collisions. In the first experiment differential cross sections were measured as a function of momentum for the production of Pi mesons, K(+) mesons, protons, deuterons, tritons, and helium-3 by 2.9 BeV protons striking beryllium and platinum targets. The Be data were taken at laboratory angles of 13, 30, 60, and 93 degrees relative to the direction of the incident proton beam; the Pt data, at 13 degrees and 93 degrees only. An analysis of these cross sections is given in terms of models of proton-nucleus interactions. The copious production of deuterons and tritons at all angles is found to be a complex nuclear effect. In a second experiment, antiproton production was observed in 2.88 BeV and 2.05 BeV proton-copper collisions, at a laboratory angle of 13 degrees and at a momentum of 760 MeV/c. The cross section for this antiproton production is presented, and used to estimate the distribution of Fermi momenta of the nucleons in the copper nucleus. (Author)


Descriptors :   (*ANTIPROTONS, DIFFERENTIAL CROSS SECTIONS), PROTON REACTIONS, BERYLLIUM, PLATINUM, PROTON SCATTERING, MOMENTUM, K MESONS, PIONS, PROTONS, DEUTERONS, TRITONS, HELIUM, COPPER, PROTON BOMBARDMENT, INSTRUMENTATION, QUANTUM THEORY, MEASUREMENT


Subject Categories : NUCLEAR PHYSICS & ELEMENTARY PARTICLE PHYSICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE