GAMMA-RAY ABSORPTION COEFFICIENTS FOR Co$sup 6$$sup 0$

Journal Article · Thu Aug 01 04:00:00 EDT 1957 · J. Sci. Ind. Research (India)

OSTI ID:4333604

Rao, B D.N.; Jnanananda, S

Absorption coefficients of gamma rays of energies 1.1715 and 1.3316 Mev from a 17.1 Mc source, Co/sup 60/, have been measured in copper, zinc, tin, lead, and mercury absorbers. Based on the geometry of Davisson and Evans, the apparatus was constructed with fine adjustments for accurate collimation. The absorption coefficient values for copper, zinc, and tin show agreement with theoretical values within 0.6 to 1.9%. The values for lead and mercury are 2.7 and 4.4%, respectively, less than theoretical values, confirming the deviations previously observed by workers with heavy elements. No probable experimental reason for deviations as large as these could be found. A part of the deviations has, therefore, been ascribed to an insufficiency in theoretical calculation of photoelectric cross-section. (auth)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-12-000636
• OSTI ID: 4333604
• Journal Information: J. Sci. Ind. Research (India), Journal Name: J. Sci. Ind. Research (India) Vol. Vol: 16B
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
BEAMS
COBALT 60
COPPER
CROSS SECTIONS
ENERGY RANGE
GAMMA RADIATION
LEAD
MERCURY
PHOTOELECTRIC EFFECT
PHYSICS
TIN
ZINC