PION-PROTON ELASTIC SCATTERING IN THE ENERGY RANGE 300 TO 700 Mev (thesis)

Technical Report · Thu Feb 20 04:00:00 EST 1964

DOI:https://doi.org/10.2172/4033137· OSTI ID:4033137

Ogden, P M

Differential cross sections for elastic pi -p scattering were measured at eight energies for positive pions and seven energies for negative pions. Energies ranged from 310to 650 Mev. Fifty-one scintillation counters and a matrix-coincidence system were used to measure simultaneously elastic events at 21 angles and charged inelastic events at 78 pi -p angle pairs. Events were detected by a coincidence of pulses indicating the presence of an incident pion, scattered pion, and recoil proton and the results were stored in the memory of a pulse-height analyzer. Various corrections were applied to the dnta and a leastsquares fit was made to the results at each energy. The form of the fitting function was a power series in the cosine of the center-of-mass angle of the scattered pion. Integrntion under the fitted curves gave values for the total elastic cross section. The importance of certain angularmomentum states, particularly the D/sub 13/ state near 600 Mev, is discussed. Several possible explanations are given of the enhancement in the pi /sup -/-p cross sections near 600 Mev. (auth)

• Research Organization: California Univ., Berkeley, CA (US). Lawrence Radiation Lab.
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-18-018649
• OSTI ID: 4033137
• Report Number(s): UCRL-11180
• Country of Publication: United States
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
COINCIDENCE METHODS
CROSS SECTIONS
ELASTIC SCATTERING
ENERGY
ENERGY LEVELS
ENERGY RANGE
ERRORS
MATRICES
MEASURED VALUES
MEV RANGE
MOMENTUM
PHYSICS
PIONS
PIONS- PLUS
PIONS-MINUS
PROTONS
PULSE ANALYZERS
RECOILS
SCATTERING
SCINTILLATION COUNTERS