A CURRENT INTEGRATOR FOR GAMMA DOSIMETRY

Technical Report · Tue Mar 01 04:00:00 EST 1960

OSTI ID:4161527

Lide, E N; Jarvis, H J

An analog computer (Integrating device) was developed to compute the total radiation dose of a test article being irradiated. The circuit employs an electrometer tube connected as a cathode follower to drive an operations amplifier. A standard capacitor is connected from the electrometer input to the amplifier output. All of the current from an ionization chamber flows into the input capacitor; when the voltage across the capacitor reaches a predetermined value, the capacitor is automatically discharged and a count is entered into a mechanical register. Total dose may be read out in terms of counts in the register and fractions of a count from a built-in vacuum tube voltmeter circuit. (auth)

• Research Organization: Lockheed Nuclear Products, Marietta, Ga.
• NSA Number: NSA-14-013845
• OSTI ID: 4161527
• Report Number(s): NP-8672; NR-81
• Country of Publication: United States
• Language: English

Related Subjects

AMPLIFIERS
ANALOG SYSTEMS
CAPACITORS
CATHODE FOLLOWERS
CIRCUITS
COMPUTERS
CURRENTS
ELECTRIC DISCHARGES
ELECTRIC METERS
ELECTRIC POTENTIAL
ELECTROMETERS
ELECTRON TUBES
ENGINEERING AND EQUIPMENT
IONIZATION CHAMBERS
IRRADIATION
RADIATION DOSES
TESTING
VACUUM