M Boutillon 1998 Phys. Med. Biol. 43 2061 doi:10.1088/0031-9155/43/8/005
M Boutillon
Show affiliationsThe parameter
governing the volume recombination in ionization chambers has been measured under conditions which allow strict application of the basic theory. The method consists of measuring the ratio of ionization currents
and
obtained at two given voltages
and
as a function of
. The value of
is derived from a linear extrapolation to zero current. Several pairs of voltages (
,
) were used. The value of
obtained in this work is
with a relative uncertainty of 1.7%. The dependence of
on atmospheric conditions has also been investigated.
87.53.Bn Dosimetry/exposure assessment
07.89.+b Environmental effects on instruments (e.g., radiation and pollution effects)
Issue 8 (August 1998)
Received 7 November 1997, in final form 12 March 1998
M Boutillon 1998 Phys. Med. Biol. 43 2061
M Boutillon and A -M Perroche 1993 Phys. Med. Biol. 38 439
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