Peak shape analysis of isolated peak 5 in LiF:Mg,Ti following 165°C post-irradiation annealing

D. Yossian; S. Gimplin; S. Mahajna; Y. S. Horowitz

doi:10.1093/oxfordjournals.rpd.a031615

Peak shape analysis of isolated peak 5 in LiF:Mg,Ti following 165°C post-irradiation annealing

D. Yossian, S. Gimplin, S. Mahajna, Y. S. Horowitz

Department of Physics

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

Abstract

The kinetic parameters of peak 5 in the glow curve of LiF:Mg,Ti were studied as a function of the duration of postirradiation annealing at 165°C. All three kinetic parameters, E, s and b show important changes as the duration of the anneal increases. Computerised glow peak shape analysis shows that b increases from 1.2 ± 0.05 (1 SD) following 5 min annealing to 1.72 ± 0.07 (1 SD) following 30 min annealing. Extrapolation to zero annealing time, however, results in a value of b consistent with unity. The activation energy, E, increases from 1.75 eV at 5 min annealing to a value of 2.0 eV after 15 min annealing and then remains constant for longer annealing times. However, the position of isolated peak 5 (T(max)) does not vary with dose illustrating the weakness of this criterion for establishing first order kinetics.

Original language	English
Pages (from-to)	173-178
Number of pages	6
Journal	Radiation Protection Dosimetry
Volume	65
Issue number	1-4
DOIs	https://doi.org/10.1093/oxfordjournals.rpd.a031615
State	Published - 1 Jan 1996

ASJC Scopus subject areas

Radiation
Radiological and Ultrasound Technology
Radiology Nuclear Medicine and imaging
Public Health, Environmental and Occupational Health

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10.1093/oxfordjournals.rpd.a031615

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title = "Peak shape analysis of isolated peak 5 in LiF:Mg,Ti following 165°C post-irradiation annealing",

abstract = "The kinetic parameters of peak 5 in the glow curve of LiF:Mg,Ti were studied as a function of the duration of postirradiation annealing at 165°C. All three kinetic parameters, E, s and b show important changes as the duration of the anneal increases. Computerised glow peak shape analysis shows that b increases from 1.2 ± 0.05 (1 SD) following 5 min annealing to 1.72 ± 0.07 (1 SD) following 30 min annealing. Extrapolation to zero annealing time, however, results in a value of b consistent with unity. The activation energy, E, increases from 1.75 eV at 5 min annealing to a value of 2.0 eV after 15 min annealing and then remains constant for longer annealing times. However, the position of isolated peak 5 (T(max)) does not vary with dose illustrating the weakness of this criterion for establishing first order kinetics.",

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AU - Yossian, D.

AU - Gimplin, S.

AU - Mahajna, S.

AU - Horowitz, Y. S.

PY - 1996/1/1

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N2 - The kinetic parameters of peak 5 in the glow curve of LiF:Mg,Ti were studied as a function of the duration of postirradiation annealing at 165°C. All three kinetic parameters, E, s and b show important changes as the duration of the anneal increases. Computerised glow peak shape analysis shows that b increases from 1.2 ± 0.05 (1 SD) following 5 min annealing to 1.72 ± 0.07 (1 SD) following 30 min annealing. Extrapolation to zero annealing time, however, results in a value of b consistent with unity. The activation energy, E, increases from 1.75 eV at 5 min annealing to a value of 2.0 eV after 15 min annealing and then remains constant for longer annealing times. However, the position of isolated peak 5 (T(max)) does not vary with dose illustrating the weakness of this criterion for establishing first order kinetics.

AB - The kinetic parameters of peak 5 in the glow curve of LiF:Mg,Ti were studied as a function of the duration of postirradiation annealing at 165°C. All three kinetic parameters, E, s and b show important changes as the duration of the anneal increases. Computerised glow peak shape analysis shows that b increases from 1.2 ± 0.05 (1 SD) following 5 min annealing to 1.72 ± 0.07 (1 SD) following 30 min annealing. Extrapolation to zero annealing time, however, results in a value of b consistent with unity. The activation energy, E, increases from 1.75 eV at 5 min annealing to a value of 2.0 eV after 15 min annealing and then remains constant for longer annealing times. However, the position of isolated peak 5 (T(max)) does not vary with dose illustrating the weakness of this criterion for establishing first order kinetics.

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Peak shape analysis of isolated peak 5 in LiF:Mg,Ti following 165°C post-irradiation annealing

Abstract

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