PHOTOPRODUCTION OF NEUTRAL PIONS AT ENERGIES 600 TO 800 MEV

Journal Article · Fri Jan 15 04:00:00 EST 1960 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.117.537· OSTI ID:4153122

Worlock, R M

The photoproduction of neutral pi mesons from hydrogen was studied at the California Institute of Technology rynchrotron Laboratory by detecting recoil protons from a liquid hydrogen target irradiated by the synchrotron bremsstrahlung beam. The recoil protons were detected by a five-counter telescope. Data were taken at proton laboratory angles of 19, 30, 40, 50, and 60 ction prod- at proton energies corresponding to photon energies of 600, 700, and 800 Mev. Angular distribution data are produced at these three energies and fitted with functions of the form: A + B cos theta /sub pi /' + C cos/sup 2/ theta /sub pi '. These functions are qualitatively like those at lower energies, B is small and --A/C is roughly 1.25. The total cross section is found to have a minimum at about 600 Mev, being slightly larger at 700 and 800 Mev. (auth)

• Research Organization: California Inst. of Tech., Pasadena
• NSA Number: NSA-14-011031
• OSTI ID: 4153122
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 117; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
BREMSSTRAHLUNG
COINCIDENCE METHODS
CROSS SECTIONS
GAMMA RADIATION
HYDROGEN
IRRADIATION
LIQUIDS
MEV RANGE
PHOTOPRODUCTION
PHYSICS
PIONS
PIONS-NEUTRAL
PROTONS
RECOILS
SYNCHROTRONS
TARGETS