DETERMINATION OF C$sup 14$ IN GEIGER-MUELLER COUNTERS FILLED WITH CO$sub 2$ OR CO WITH HEAVY SATURATED HYDROCARBON

Journal Article · Wed Jan 01 04:00:00 EST 1958 · Nukleonika (Poland)

OSTI ID:4275637

Zlotowski, I; Zielinski, M

Measurements of radiocarbon as CO/sub 2/ and as CO in Geiger-Mueller counters filled with a mixture of gaseous radioactive carbon compounds and a small quantity of the saturated hydrocarbons vapors, of n. hexane, n. heptane, n. octane, cyclohexane showed that counters filled with vapor of saturated hydrocarbons, pure or mixed with a carbon oxide or a carbon dioxide, are self- quenching counters and have good characteristic curves. Experiments indicated that the partial pressure of carbon oxide cannot exceed the partial pressure of quenching hydrocarbon in the counter. Setting up a resistance the order of 100 Megohm between the anode wire of the counter and its supply of the potential the resolving time is 3 to 6 x 10/sup -4/ sec., and the plateau region from 200 up to 600 v with the s1ope less than 3% per 100 v at the counting rates of a few thousand counts per minute. Within the statistical errors the measured activity was proportional to the partial pressure of labeled gaseous radioactive substances (C0/sub 2/ or CO) in the counter. (tr-auth)

• Research Organization: Warsaw Univ.
• NSA Number: NSA-13-007708
• OSTI ID: 4275637
• Journal Information: Nukleonika (Poland), Journal Name: Nukleonika (Poland) Vol. Vol: 3; ISSN NUKLA
• Country of Publication: Country unknown/Code not available
• Language: Polish

Related Subjects

CARBON 14
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CYCLOALKANES
EFFICIENCY
ELECTRIC POTENTIAL
ERRORS
GASES
GEIGER- MUELLER COUNTERS
HEAT TREATMENTS
HEPTANE
HEXANE
HYDROCARBONS
INSTRUMENTS
IONIZATION
LABELLED COMPOUNDS
MEASURED VALUES
MIXING
OCTANE
OPERATION
PRESSURE
PULSES
QUANTITATIVE ANALYSIS
QUENCHING
RADIOACTIVITY
RESISTORS
RESOLUTION
STATISTICS
SURFACES
VAPORS
WIRES