Measurement of /sup 14/N(. gamma. ,. pi. /sup +/)/sup 14/C/sub g. delta/ at E/sub. gamma. / = 200 MeV and the development of MEPS: medium energy pion spectrometer
Thesis/Dissertation
·
OSTI ID:5763906
Differential cross sections for /sup 14/N(..gamma.., ..pi../sup +/)/sup 14/C/sub g.delta/ (0 + 1) have been measured for an incident photon energy E/sub ..gamma../ = 200 MeV at laboratory angles of 45/sup 0/, 60/sup 0/, 75/sup 0/, 90/sup 0/, 120/sup 0/ and 140/sup 0/. The measurement of /sup 14/N(..gamma.., ..pi../sup +/)/sup 14/C/sub g.delta/ was motivated by the need for high-quality (..gamma.., ..pi..) data which would be especially sensitive to DWIA dynamics. The data were taken at the Bates Linear Accelerator Center by passing 200 MeV electrons first through a 126.6 mg/cm/sup 2/ Ta radiator and then through a 365 mg/cm/sup 2/ Be/sub 3/N/sub 2/ sintered wafer target. The pions, produced in the /sup 14/N(..gamma.., ..pi../sup +/)/sup 14/C/sub g.delta/ endpoint region from the combined bremmstrahlung and virtual photon fluxes, were detected at each angle using MEPS configured with a circular 20.1 msr entrace collimator. Particle position and angle at the focal plane of MEPS were measured by two orthogonal multiwire vertical drift chambers.
- Research Organization:
- Rensselaer Polytechnic Inst., Troy, NY (USA)
- OSTI ID:
- 5763906
- Country of Publication:
- United States
- Language:
- English
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Mon Aug 12 00:00:00 EDT 1985
· Phys. Rev. Lett.; (United States)
·
OSTI ID:5348063
Related Subjects
440103 -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
651325* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
BOSONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
HADRONS
IMPULSE APPROXIMATION
INFORMATION
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
MESONS
MEV RANGE
MEV RANGE 100-1000
MIT BATES LINAC
NITROGEN 14 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
PHOTONUCLEAR REACTIONS
PIONS
PIONS PLUS
PSEUDOSCALAR MESONS
SPECTROMETERS
TARGETS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
651325* -- Nuclear Properties & Reactions
A=6-19
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
BOSONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTORTED WAVE THEORY
ELEMENTARY PARTICLES
ENERGY RANGE
EXPERIMENTAL DATA
HADRONS
IMPULSE APPROXIMATION
INFORMATION
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
MESONS
MEV RANGE
MEV RANGE 100-1000
MIT BATES LINAC
NITROGEN 14 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
PARTICLE PRODUCTION
PHOTONUCLEAR REACTIONS
PIONS
PIONS PLUS
PSEUDOSCALAR MESONS
SPECTROMETERS
TARGETS