1994
DOI: 10.1088/0031-9155/39/6/009
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Ion loss due to initial recombination in a parallel-plate cavity ionization chamber

Abstract: Collection efficiencies for ion loss due to initial recombination and back-diffusion were measured for several humidities using a parallel-plate cavity ionization chamber irradiated with 60Co gamma-rays. It was shown, from measurements in a range of inverse electric field strengths from 0.05 to 14 mm V(-1), that initial recombination took place both in clusters and columns of ions produced along the path of the secondary electrons ejected by the y-rays. The ion loss due to recombination in clusters was found t… Show more

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Cited by 9 publications
(8 citation statements)
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“…In the present work, we use the following equation to correct for initial recombination. This equation was found to give close approximations to experimental data on initial recombination loss obtained for a parallel-plate ionization chamber irradiated with y-rays (Takata 1994).…”
Section: Calculation Of M Valuessupporting
confidence: 58%
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“…In the present work, we use the following equation to correct for initial recombination. This equation was found to give close approximations to experimental data on initial recombination loss obtained for a parallel-plate ionization chamber irradiated with y-rays (Takata 1994).…”
Section: Calculation Of M Valuessupporting
confidence: 58%
“…The humidity-control system was similar to that employed in another experiment, which was performed subsequently (Takata 1994). Dry air was obtained by passing the stream through a trap, which was cooled to -40°C to -60°C.…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…These reference values are plotted together in figure 4. As well, Boutillon (1998) showed values of 9.6 to 13.5 V m −1 between 1.3 × 10 −10 and 2.5 × 10 −8 A m −1 , and Takata (1994) obtained values at 0.2-0.9 nA m −1 . It is interesting enough to note that all the data were aligned along a straight line by the least-squares method, as shown in the figure.…”
Section: E 1 Of Initial Recombinationmentioning
confidence: 68%
“…However, some factors lead to the lack of complete collection of these charges [ 9 ]. These factors are related to different origins either connected with the geometrical structure of the ion chamber, applied voltage, or the beam type and strength [ 10 , 11 ].…”
Section: Introductionmentioning
confidence: 99%