Electric Characteristics of Gamma-Ray Irradiated Shielding Window Glass

Journal Article · Mon Jan 01 04:00:00 EST 1962 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1728556· OSTI ID:4803924

Yamamoto, Kakuji; Tsuchiya, Masao

Induced color of shielding window glass of various kinds by gamma irradiation is studied. With a 1-kC Co⁶⁰ radiation source, 23° plus or minus 3 deg C as irradiation temperature, 10⁵ r/h as exposure dose rate, and 10⁵ to 10⁷ r as total exposure dose, the coloration increases gradually. Volume resistivity of glass and its change by gamma irradiation are measured. 100 v d-c is applied to a sheet of glass sandwiched between two electrodes to measure the change of its electric resistance with time. The quantity of induced space charge by radiation is calculated by time integration of the current obtained from reciprocal of the resistance. Resistance of high density glass is found to become a minimum at a dose of 10⁶ r, and to increase as the dose increases. Resistance of medium density glass decreases gradually. Change of the resistance is exponential and the charge is always positive at any dose. This result testifies that glass is electrified by radiation. Linearity is established between the quantity of space charge and the dose in a range of 10⁵ to 4 x 10⁶ r.

• Research Organization: Tokyo Metropolitan Isotope Center
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-033533
• OSTI ID: 4803924
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 10 Vol. 33; ISSN JAPIAU; ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COBALT 60
CURRENTS
DENSITY
DISTRIBUTION
ELECTRIC CHARGES
ELECTRIC CONDUCTIVITY
GAMMA RADIATION
GAMMA SOURCES
GLASS
IRRADIATION
MEASURED VALUES
QUANTITATIVE ANALYSIS
RADIATION DOSES
RADIATION EFFECTS
SHIELDING
TEMPERATURE
WINDOWS