Color and luminescence centers in LiF(U) crystals irradiated by pulsed electron beams

Abstract

Characteristics of color and luminescent centers produced in LiF:U6 ⁺ (0.01M%) crystals by pulses of accelerated electrons (0.25 MeV, 15 ns, 8-200 mJ/cm ²) at 77-350 K are studied using time-resolved optical spectroscopy. It is found that the time constant of the exponential rise of the cathodoluminescence intensity in the visual spectral range after completion of the irradiation pulse coincides with the decay time of a group of lines in the UV region at T = 77-280 K and with the decay time of the number of V _k-centers induced by the pulse of irradiation at T > 280 K. The mechanisms of population of the ground radiative level of the emission center and the structure of its electronic and nuclear subsystems are discussed.

Original language	English
Pages (from-to)	579-584
Number of pages	6
Journal	Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
Volume	112
Issue number	4
DOIs	https://doi.org/10.1134/S0030400X1203023X
Publication status	Published - Apr 2012

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics

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10.1134/S0030400X1203023X

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title = "Color and luminescence centers in LiF(U) crystals irradiated by pulsed electron beams",

abstract = "Characteristics of color and luminescent centers produced in LiF:U6 + (0.01M%) crystals by pulses of accelerated electrons (0.25 MeV, 15 ns, 8-200 mJ/cm 2) at 77-350 K are studied using time-resolved optical spectroscopy. It is found that the time constant of the exponential rise of the cathodoluminescence intensity in the visual spectral range after completion of the irradiation pulse coincides with the decay time of a group of lines in the UV region at T = 77-280 K and with the decay time of the number of V k-centers induced by the pulse of irradiation at T > 280 K. The mechanisms of population of the ground radiative level of the emission center and the structure of its electronic and nuclear subsystems are discussed.",

author = "Yakovlev, {V. Yu} and Moiseeva, {A. V.} and Denisov, {G. S.}",

year = "2012",

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doi = "10.1134/S0030400X1203023X",

language = "English",

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pages = "579--584",

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T1 - Color and luminescence centers in LiF(U) crystals irradiated by pulsed electron beams

AU - Yakovlev, V. Yu

AU - Moiseeva, A. V.

AU - Denisov, G. S.

PY - 2012/4

Y1 - 2012/4

N2 - Characteristics of color and luminescent centers produced in LiF:U6 + (0.01M%) crystals by pulses of accelerated electrons (0.25 MeV, 15 ns, 8-200 mJ/cm 2) at 77-350 K are studied using time-resolved optical spectroscopy. It is found that the time constant of the exponential rise of the cathodoluminescence intensity in the visual spectral range after completion of the irradiation pulse coincides with the decay time of a group of lines in the UV region at T = 77-280 K and with the decay time of the number of V k-centers induced by the pulse of irradiation at T > 280 K. The mechanisms of population of the ground radiative level of the emission center and the structure of its electronic and nuclear subsystems are discussed.

AB - Characteristics of color and luminescent centers produced in LiF:U6 + (0.01M%) crystals by pulses of accelerated electrons (0.25 MeV, 15 ns, 8-200 mJ/cm 2) at 77-350 K are studied using time-resolved optical spectroscopy. It is found that the time constant of the exponential rise of the cathodoluminescence intensity in the visual spectral range after completion of the irradiation pulse coincides with the decay time of a group of lines in the UV region at T = 77-280 K and with the decay time of the number of V k-centers induced by the pulse of irradiation at T > 280 K. The mechanisms of population of the ground radiative level of the emission center and the structure of its electronic and nuclear subsystems are discussed.

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JO - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)

JF - Optics and Spectroscopy (English translation of Optika i Spektroskopiya)

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ER -

Color and luminescence centers in LiF(U) crystals irradiated by pulsed electron beams

Abstract

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