MEASUREMENT OF THE CIRCULAR POLARIZATION OF HIGH-ENERGY COLLIMATED $gamma$- RAY BEAMS

Journal Article · Sat Dec 31 23:00:00 EST 1960 · Anais acad. brasil. cienc.

OSTI ID:4795885

Lerner, E; Moscati, G; Silva, E; Goldemberg, J

The measurement of circular polarization at energies higher than 5 Mev using the forward Compton scattering of gamma rays is discussed. Attempts were made to measure the circular polarization of bremsstrahlung radiation produced by electrons accelerated in a Betatron to an energy of 22 Mev. The x rays were collimated to a 1/4 in. beam and then traversed a 1/4 in. plate of a permanent Alnico. The Compton scattered fraction of the beam was allowed to hit a 2 in. internal diameter eopper cylinder centered with respect to the incident beam. The experimental value obtained was delta (experimental) = 0.014 + 0.024. No circular polarization of the bremsstrahlung beam was detected. Therefore, it was concluded that the degree of circular polarization of the beam P < 30%. (P.C.H.)

• Research Organization: Universidade, Sao Paulo, Brazil
• NSA Number: NSA-16-013875
• OSTI ID: 4795885
• Journal Information: Anais acad. brasil. cienc., Journal Name: Anais acad. brasil. cienc. Vol. Vol: 33
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALNICO ALLOYS
ALUMINUM ALLOYS
BEAMS
BETATRONS
BREMSSTRAHLUNG
COBALT ALLOYS
COMPTON EFFECT
COPPER
CYLINDERS
ELECTRONS
ENERGY RANGE
GAMMA RADIATION
MEASURED VALUES
MEV RANGE
NICKEL ALLOYS
PHYSICS
PLATES
POLARIZATION
SCATTERING
X RADIATION