Localised and delocalised optically induced conversion of composite glow peak 5 in LiF:Mg,Ti (TLD-100) to glow peak 4 as a function of post-irradiation annealing temperature

Y. S. Horowitz; Y. Einav; S. Biderman; L. Oster

doi:10.1093/oxfordjournals.rpd.a005831

Localised and delocalised optically induced conversion of composite glow peak 5 in LiF:Mg,Ti (TLD-100) to glow peak 4 as a function of post-irradiation annealing temperature

Y. S. Horowitz, Y. Einav, S. Biderman, L. Oster

Department of Physics

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

15 Scopus citations

Abstract

The composite structure of glow peak 5 in LiF:Mg,Ti (TLD-100) has been investigated using optical bleaching by 310 nm (4 eV) light. The glow peak conversion efficiency of peak 5a (T_m = 187°C) to peak 4 trap, is very high at a value of 3 ± 0.5 (1 SD) whereas the glow peak conversion efficiency of peak 5 (T_m = 205°C) to peak 4 traps is 0.0026 ± 0.0012 (1 SD). The high conversion efficiency of peak 5a to peak 4 arises from direct optical ionisation of the electron in the electron-hole pair, leaving behind a singly-trapped hole (peak 4), a direct mechanism, relatively free of competitive mechanisms. Optical ionisation of the 'singly-trapped' electron (peak 5), however, can lead to peak 4 only via multi-stage mechanisms involving charge carrier transport in the valence and conduction bands, a mechanism subject to competitive processes. The conduction/valence band competitive processes lead to the factor of one thousand decrease in the conversion efficiency of peak 5 compared to peak 5a.

Original language	English
Pages (from-to)	135-138
Number of pages	4
Journal	Radiation Protection Dosimetry
Volume	100
Issue number	1-4
DOIs	https://doi.org/10.1093/oxfordjournals.rpd.a005831
State	Published - 1 Jan 2002

ASJC Scopus subject areas

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

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10.1093/oxfordjournals.rpd.a005831

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title = "Localised and delocalised optically induced conversion of composite glow peak 5 in LiF:Mg,Ti (TLD-100) to glow peak 4 as a function of post-irradiation annealing temperature",

abstract = "The composite structure of glow peak 5 in LiF:Mg,Ti (TLD-100) has been investigated using optical bleaching by 310 nm (4 eV) light. The glow peak conversion efficiency of peak 5a (Tm = 187°C) to peak 4 trap, is very high at a value of 3 ± 0.5 (1 SD) whereas the glow peak conversion efficiency of peak 5 (Tm = 205°C) to peak 4 traps is 0.0026 ± 0.0012 (1 SD). The high conversion efficiency of peak 5a to peak 4 arises from direct optical ionisation of the electron in the electron-hole pair, leaving behind a singly-trapped hole (peak 4), a direct mechanism, relatively free of competitive mechanisms. Optical ionisation of the 'singly-trapped' electron (peak 5), however, can lead to peak 4 only via multi-stage mechanisms involving charge carrier transport in the valence and conduction bands, a mechanism subject to competitive processes. The conduction/valence band competitive processes lead to the factor of one thousand decrease in the conversion efficiency of peak 5 compared to peak 5a.",

author = "Horowitz, {Y. S.} and Y. Einav and S. Biderman and L. Oster",

year = "2002",

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doi = "10.1093/oxfordjournals.rpd.a005831",

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Localised and delocalised optically induced conversion of composite glow peak 5 in LiF:Mg,Ti (TLD-100) to glow peak 4 as a function of post-irradiation annealing temperature. / Horowitz, Y. S.; Einav, Y.; Biderman, S. et al.
In: Radiation Protection Dosimetry, Vol. 100, No. 1-4, 01.01.2002, p. 135-138.

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

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T1 - Localised and delocalised optically induced conversion of composite glow peak 5 in LiF:Mg,Ti (TLD-100) to glow peak 4 as a function of post-irradiation annealing temperature

AU - Horowitz, Y. S.

AU - Einav, Y.

AU - Biderman, S.

AU - Oster, L.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - The composite structure of glow peak 5 in LiF:Mg,Ti (TLD-100) has been investigated using optical bleaching by 310 nm (4 eV) light. The glow peak conversion efficiency of peak 5a (Tm = 187°C) to peak 4 trap, is very high at a value of 3 ± 0.5 (1 SD) whereas the glow peak conversion efficiency of peak 5 (Tm = 205°C) to peak 4 traps is 0.0026 ± 0.0012 (1 SD). The high conversion efficiency of peak 5a to peak 4 arises from direct optical ionisation of the electron in the electron-hole pair, leaving behind a singly-trapped hole (peak 4), a direct mechanism, relatively free of competitive mechanisms. Optical ionisation of the 'singly-trapped' electron (peak 5), however, can lead to peak 4 only via multi-stage mechanisms involving charge carrier transport in the valence and conduction bands, a mechanism subject to competitive processes. The conduction/valence band competitive processes lead to the factor of one thousand decrease in the conversion efficiency of peak 5 compared to peak 5a.

AB - The composite structure of glow peak 5 in LiF:Mg,Ti (TLD-100) has been investigated using optical bleaching by 310 nm (4 eV) light. The glow peak conversion efficiency of peak 5a (Tm = 187°C) to peak 4 trap, is very high at a value of 3 ± 0.5 (1 SD) whereas the glow peak conversion efficiency of peak 5 (Tm = 205°C) to peak 4 traps is 0.0026 ± 0.0012 (1 SD). The high conversion efficiency of peak 5a to peak 4 arises from direct optical ionisation of the electron in the electron-hole pair, leaving behind a singly-trapped hole (peak 4), a direct mechanism, relatively free of competitive mechanisms. Optical ionisation of the 'singly-trapped' electron (peak 5), however, can lead to peak 4 only via multi-stage mechanisms involving charge carrier transport in the valence and conduction bands, a mechanism subject to competitive processes. The conduction/valence band competitive processes lead to the factor of one thousand decrease in the conversion efficiency of peak 5 compared to peak 5a.

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Localised and delocalised optically induced conversion of composite glow peak 5 in LiF:Mg,Ti (TLD-100) to glow peak 4 as a function of post-irradiation annealing temperature

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