Development of a functional equation to correct fading in imaging plates

Hiroko Ohuchi; Akira Yamadera

doi:10.1016/S1350-4487(01)00276-1

Development of a functional equation to correct fading in imaging plates

Hiroko Ohuchi, Akira Yamadera

Pharmaceutical Sciences (department affiliation only)

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

18 Citations (Scopus)

Abstract

The time evolution of PSL in certain photo stimulable phosphors has been studied for several storage temperatures ranging from 0°C to 60°C and for time periods from 0.03 to approximately 500 h after irradiation. The experiments were carried out using commercially available BaFBr:Eu²⁺ phosphors: BAS-UR and BAS-TR (Fuji Film Co.). The fading curves obtained after irradiation with a ²⁴⁴Cm source were analyzed by applying Arrhenius’ equation to the experimental results, the same method reported previously (Ohuchi et al., 2000a). An improved equation, which is a function of elapsed time (t) and absolute temperature (K), was proposed. Comparison of the data of the experiment and calculated results based on a model consisting of four components for BAS-UR and five components for BAS-TR showed excellent agreement at all temperatures and over all time periods. The formula was also confirmed as giving the proper calculated photo-stimulated luminescence (PSL) corresponding to the temperature changes between the elapsed times, and showed good consistency with the experimental results.

Original language	English
Pages (from-to)	135-142
Number of pages	8
Journal	Radiation Measurements
Volume	35
Issue number	2
DOIs	https://doi.org/10.1016/S1350-4487(01)00276-1
Publication status	Published - 2002 Jan 1

Keywords

Arrhenius’ equation
Fading correction
Functional equation
Imaging plate
Photo-stimulated luminescence

ASJC Scopus subject areas

Radiation
Instrumentation

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title = "Development of a functional equation to correct fading in imaging plates",

abstract = "The time evolution of PSL in certain photo stimulable phosphors has been studied for several storage temperatures ranging from 0°C to 60°C and for time periods from 0.03 to approximately 500 h after irradiation. The experiments were carried out using commercially available BaFBr:Eu2+ phosphors: BAS-UR and BAS-TR (Fuji Film Co.). The fading curves obtained after irradiation with a 244Cm source were analyzed by applying Arrhenius{\textquoteright} equation to the experimental results, the same method reported previously (Ohuchi et al., 2000a). An improved equation, which is a function of elapsed time (t) and absolute temperature (K), was proposed. Comparison of the data of the experiment and calculated results based on a model consisting of four components for BAS-UR and five components for BAS-TR showed excellent agreement at all temperatures and over all time periods. The formula was also confirmed as giving the proper calculated photo-stimulated luminescence (PSL) corresponding to the temperature changes between the elapsed times, and showed good consistency with the experimental results.",

keywords = "Arrhenius{\textquoteright} equation, Fading correction, Functional equation, Imaging plate, Photo-stimulated luminescence",

author = "Hiroko Ohuchi and Akira Yamadera",

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AU - Yamadera, Akira

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N2 - The time evolution of PSL in certain photo stimulable phosphors has been studied for several storage temperatures ranging from 0°C to 60°C and for time periods from 0.03 to approximately 500 h after irradiation. The experiments were carried out using commercially available BaFBr:Eu2+ phosphors: BAS-UR and BAS-TR (Fuji Film Co.). The fading curves obtained after irradiation with a 244Cm source were analyzed by applying Arrhenius’ equation to the experimental results, the same method reported previously (Ohuchi et al., 2000a). An improved equation, which is a function of elapsed time (t) and absolute temperature (K), was proposed. Comparison of the data of the experiment and calculated results based on a model consisting of four components for BAS-UR and five components for BAS-TR showed excellent agreement at all temperatures and over all time periods. The formula was also confirmed as giving the proper calculated photo-stimulated luminescence (PSL) corresponding to the temperature changes between the elapsed times, and showed good consistency with the experimental results.

AB - The time evolution of PSL in certain photo stimulable phosphors has been studied for several storage temperatures ranging from 0°C to 60°C and for time periods from 0.03 to approximately 500 h after irradiation. The experiments were carried out using commercially available BaFBr:Eu2+ phosphors: BAS-UR and BAS-TR (Fuji Film Co.). The fading curves obtained after irradiation with a 244Cm source were analyzed by applying Arrhenius’ equation to the experimental results, the same method reported previously (Ohuchi et al., 2000a). An improved equation, which is a function of elapsed time (t) and absolute temperature (K), was proposed. Comparison of the data of the experiment and calculated results based on a model consisting of four components for BAS-UR and five components for BAS-TR showed excellent agreement at all temperatures and over all time periods. The formula was also confirmed as giving the proper calculated photo-stimulated luminescence (PSL) corresponding to the temperature changes between the elapsed times, and showed good consistency with the experimental results.

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