INVESTIGATION OF THE PHOTOPRODUCTION OF NEGATIVE PIONS FROM DEUTERIUM CLOSE TO THE THRESHOLD

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Tr. Fiz. Inst., Akad. Nauk SSSR

OSTI ID:4154709

Adamovich, M I; Larionova, V G; Kharlamov, S P

Emulsions were used to investigate the photoproduction of mesons( pi / sup -/) from deuterium at energies close to the threshold. The gamma rays were produced from the acceleration of electrons in the Lebedeff Physical Institute synchrotron. Particles were identified visually. In all, 720 stars were identified that could be assigned to the investigated reaction gamma + d yields p + p + pi /sup -/. The reaction was studied for photon energies ranging from the threshold to 174 Mev. The angular distribution of the mesons( pi /sup -/) for photon energies of 153 to 174 Mev was found to be isotropic indicating that meson( pi /sup -/) formation took place in an Sstate. From an examination of the kinetic energies of the various particles it was concluded that the final state of the reaction is such that the nuclear interaction between the final protons is for the two particles to be in a 1S/sub O/ state. The only transition that can form an S-state sition. This means that the electric dipole absorption of the photons is responsible for the formation of mesons( pi /sup -/) up to a photon energy of 174 Mev. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-18-000904
• OSTI ID: 4154709
• Journal Information: Tr. Fiz. Inst., Akad. Nauk SSSR, Journal Name: Tr. Fiz. Inst., Akad. Nauk SSSR Vol. Vol: 19
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
ANGULAR DISTRIBUTION
DEUTERIUM
DIPOLES
ELECTRIC MOMENTS
ELECTRONS
ENERGY LEVELS
ENERGY RANGE
GAMMA RADIATION
INTERACTIONS
MEV RANGE
NUCLEAR EMULSIONS
PARTICLE TRACKS
PHOTONS
PHOTOPRODUCTION
PHYSICS
PIONS
PIONS-MINUS
PROTONS
S-STATES
SYNCHROTRONS
TRANSIENTS
VELOCITY