COUNTING RATES IN BF$sub 3$ ARGON CHAMBERS
Technical Report
·
OSTI ID:4349507
A set of experiments were carried out in which an ionization chamber maintnined in a constant thermal neutron flux was filled successively with mixtures of BF/sub 3/ and argon of various concentrations and at various total pressures. The following points were proved: (1) That the counting rate in the chamber was proportional within 2% to the partial pressure of boron trifluoride irrespective of the total pressure of the mixture. (2) That mixing of the two gases by diffusion was very slow; 7 days standing being required within the apparatus used before the counting-rate became constant after mixing. (3) That no significant separation of the two gases occurred when a mixture was suddenly admitted to the evacuated chamber through a narrow capillary. (auth)
- Research Organization:
- Atomic Energy of Canada Ltd. Chalk River Project, Chalk River, Ont.
- NSA Number:
- NSA-12-008599
- OSTI ID:
- 4349507
- Report Number(s):
- MC-217; AECL-112
- Country of Publication:
- Canada
- Language:
- English
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