A correction factor for effects of scattered x-rays at calibration of ionization chambers in low energy x-ray standard fields

Akihiro Nohtomi; Nobuhisa Takata; Takeji Sakae

doi:10.1080/18811248.2007.9711263

A correction factor for effects of scattered x-rays at calibration of ionization chambers in low energy x-ray standard fields

Akihiro Nohtomi, Nobuhisa Takata, Takeji Sakae

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A correction factor k_s is related to contributions of scattered photons at calibration in standard X-ray fields. We obtained values of k_s for spherical and parallel-plate ionization chambers in low energy X-ray fields experimentally. Signal currents from these chambers were measured using copper plate collimators with different diameter holes to vary the field size. To derive k_s values, the measured data were analyzed using a simple model. It was found that the value of k_s increases with the increase of the effective energy of X-rays.

Original language	English
Pages (from-to)	109-113
Number of pages	5
Journal	journal of nuclear science and technology
Volume	44
Issue number	2
DOIs	https://doi.org/10.1080/18811248.2007.9711263
Publication status	Published - Feb 2007
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Nuclear Energy and Engineering

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10.1080/18811248.2007.9711263

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abstract = "A correction factor ks is related to contributions of scattered photons at calibration in standard X-ray fields. We obtained values of ks for spherical and parallel-plate ionization chambers in low energy X-ray fields experimentally. Signal currents from these chambers were measured using copper plate collimators with different diameter holes to vary the field size. To derive ks values, the measured data were analyzed using a simple model. It was found that the value of ks increases with the increase of the effective energy of X-rays.",

author = "Akihiro Nohtomi and Nobuhisa Takata and Takeji Sakae",

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AU - Takata, Nobuhisa

AU - Sakae, Takeji

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AB - A correction factor ks is related to contributions of scattered photons at calibration in standard X-ray fields. We obtained values of ks for spherical and parallel-plate ionization chambers in low energy X-ray fields experimentally. Signal currents from these chambers were measured using copper plate collimators with different diameter holes to vary the field size. To derive ks values, the measured data were analyzed using a simple model. It was found that the value of ks increases with the increase of the effective energy of X-rays.

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A correction factor for effects of scattered x-rays at calibration of ionization chambers in low energy x-ray standard fields

Abstract

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