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Some Properties of BF3 in Ionization Chambers
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Measurements of the collection of electrons in BF3 due to alpha-particle ionization pulses are described. Comparison of pulse heights showed that 1.33 as much energy is required to produce an ion pair in BF3 as in argon. The mean drift distance of an electron before capture in BF3 at 76 cm varies from 1.25 cm at an E/P of 5 (volts/cm/cm of Hg) to 7.25 cm at an E/P of 20. The drift velocity is observed and varies from 0.5×106 cm/sec. to 2.5×106 cm/sec. over the range of E/P used. The method of preparation of pure BF3 is described.
Title: Some Properties of BF3 in Ionization Chambers
Description:
Measurements of the collection of electrons in BF3 due to alpha-particle ionization pulses are described.
Comparison of pulse heights showed that 1.
33 as much energy is required to produce an ion pair in BF3 as in argon.
The mean drift distance of an electron before capture in BF3 at 76 cm varies from 1.
25 cm at an E/P of 5 (volts/cm/cm of Hg) to 7.
25 cm at an E/P of 20.
The drift velocity is observed and varies from 0.
5×106 cm/sec.
to 2.
5×106 cm/sec.
over the range of E/P used.
The method of preparation of pure BF3 is described.
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