Scattering of polarized photons at LEGS

Conference · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6276847

Sandorfi, A M; Blanpied, G; Blecher, M; Giordano, G; Kistner, O C; Matone, G; Preedom, B M; Schaerf, C; Sealock, R M; Thorn, C E

The Laser-Electron-Gamma-Source (LEGS) facility at Brookhaven National Laboratory is now coming into operation. This facility delivers intense, monochromatic beams of medium-energy gamma rays that are almost completely polarized (linear or circular), and this degree of freedom has altered the status of a number of important experiments from being impossible to now being merely difficult. In this lecture we will describe the key features of the LEGS facility, and discuss two elastic scattering experiments on the nucleon, one in the region of the first resonance which is sensitive to the E2/M1 mixing ratio in the delta, and the other below pion threshold which is sensitive to the nucleon polarizabilities. These will illustrate the unique potential of the polarization degree of freedom. 36 refs., 9 figs., 4 tabs.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6276847
• Report Number(s): BNL-42331; CONF-8807135-2; ON: DE89008502
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430200* -- Particle Accelerators-- Beam Dynamics
Field Calculations
& Ion Optics
645100 -- High Energy Physics-- Particle Interactions & Properties-Experimental
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BASIC INTERACTIONS
BEAMS
COMPTON EFFECT
CROSS SECTIONS
DEGREES OF FREEDOM
ELASTIC SCATTERING
ELECTROMAGNETIC INTERACTIONS
ELECTRONS
ELEMENTARY PARTICLES
FERMIONS
GAMMA SOURCES
INTERACTIONS
LEPTONS
PHOTON BEAMS
POLARIZED BEAMS
RADIATION SOURCES
SCATTERING
SCATTERING AMPLITUDES