PHOTOPRODUCTION OF NEUTRAL MESONS FROM HYDROGEN NEAR THRESHOLD

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1962

OSTI ID:4750925

Bulos, F Y

The angular distributions of neutral pions produced from H by the bremsstrahlung beam of the Stanford linear accelerator were studied at three gamma energies 185, 170, and 160 Mev. A thin'' H gas target ( approx equal 35 psi pressure) was used. The recoil protons from the process gamma + p yields pi /sup o/ + p were momentum analyzed by a magnetic spectrometer and detected by two counters in coincidence, a plastic scintillator front counter 0.010 in. thick and a potassium iodide back counter 0.090 in. thick. The measurements were experimentally normalized to obtain absolute differential cross sections. At each energy the differential cross section was measured at four different angles. The coefficients of the differential cross section d sigma /d OMEGA * = A + B cos THETA * + C cos/sup 2/ THETA * and their errors were obtained by a least square fit to the measured points. (M.P.G.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-017082
• OSTI ID: 4750925
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
BEAMS
BREMSSTRAHLUNG
COINCIDENCE METHODS
COUNTERS
CROSS SECTIONS
ENERGY
ENERGY RANGE
ERRORS
GAMMA RADIATION
GASES
HYDROGEN
LINEAR ACCELERATORS
MAGNETIC FIELDS
MEASURED VALUES
MESONS
MOMENTUM
PHOSPHORS
PHOTOPRODUCTION
PHYSICS
PIONS
POTASSIUM IODIDES
PRESSURE
PROTONS
RECOILS
SPECTROMETERS
TARGETS