Radiation defects in Ce3+-activated fluorobromozirconate glass-ceramic X-ray storage phosphors

M. Secu; S. Schweizer; U. Rogulis; J. M. Spaeth; A. Edgar; G. V.M. Williams

doi:10.1016/j.radmeas.2004.01.003

Radiation defects in Ce³⁺-activated fluorobromozirconate glass-ceramic X-ray storage phosphors

M. Secu
, S. Schweizer^*
, U. Rogulis
, J. M. Spaeth
, A. Edgar
, G. V.M. Williams

^*Corresponding author for this work

Laboratory of Spectroscopy, Institute of Solid State Physics

Paderborn University
Victoria University of Wellington

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

2 Citations (Scopus)

Abstract

We report on a photostimulated luminescence (PSL) effect in Ce-doped fluorobromozirconate glasses. Small hexagonal or orthorhombic BaBr₂ crystallites are formed in the glass upon annealing. The PSL shows a (381,415) nm doublet which is due to the 5d-4f luminescence of Ce³⁺ in the orthorhombic BaBr₂ crystallites embedded in the glass matrix. The stimulation band of the PSL peaking at 580 nm is probably due to perturbed F centres in the crystallites. After X-irradiation the magnetic circular dichroism of the optical absorption showed a broad band in the spectral range between 440 and 800 nm, having a derivative-like line shape centred at about 600 nm. The spectrum consists of two overlapping bands: one, derivative-like, belongs probably to F-centres, whereas the second band, superimposed on the low-energy region of the F-centre band, is due to a hole centre.

Original language	English
Pages (from-to)	739-742
Number of pages	4
Journal	Radiation Measurements
Volume	38
Issue number	4-6
DOIs	https://doi.org/10.1016/j.radmeas.2004.01.003
Publication status	Published - Aug 2004

Keywords

Fluorozirconate glass-ceramics
Magnetic circular dichroism
Photostimulated luminescence
X-ray storage phosphor

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10.1016/j.radmeas.2004.01.003

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title = "Radiation defects in Ce3+-activated fluorobromozirconate glass-ceramic X-ray storage phosphors",

abstract = "We report on a photostimulated luminescence (PSL) effect in Ce-doped fluorobromozirconate glasses. Small hexagonal or orthorhombic BaBr2 crystallites are formed in the glass upon annealing. The PSL shows a (381,415) nm doublet which is due to the 5d-4f luminescence of Ce3+ in the orthorhombic BaBr2 crystallites embedded in the glass matrix. The stimulation band of the PSL peaking at 580 nm is probably due to perturbed F centres in the crystallites. After X-irradiation the magnetic circular dichroism of the optical absorption showed a broad band in the spectral range between 440 and 800 nm, having a derivative-like line shape centred at about 600 nm. The spectrum consists of two overlapping bands: one, derivative-like, belongs probably to F-centres, whereas the second band, superimposed on the low-energy region of the F-centre band, is due to a hole centre.",

keywords = "Fluorozirconate glass-ceramics, Magnetic circular dichroism, Photostimulated luminescence, X-ray storage phosphor",

author = "M. Secu and S. Schweizer and U. Rogulis and Spaeth, \{J. M.\} and A. Edgar and Williams, \{G. V.M.\}",

year = "2004",

month = aug,

doi = "10.1016/j.radmeas.2004.01.003",

language = "English",

volume = "38",

pages = "739--742",

journal = "Radiation Measurements",

issn = "1350-4487",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Radiation defects in Ce3+-activated fluorobromozirconate glass-ceramic X-ray storage phosphors

AU - Secu, M.

AU - Schweizer, S.

AU - Rogulis, U.

AU - Spaeth, J. M.

AU - Edgar, A.

AU - Williams, G. V.M.

PY - 2004/8

Y1 - 2004/8

N2 - We report on a photostimulated luminescence (PSL) effect in Ce-doped fluorobromozirconate glasses. Small hexagonal or orthorhombic BaBr2 crystallites are formed in the glass upon annealing. The PSL shows a (381,415) nm doublet which is due to the 5d-4f luminescence of Ce3+ in the orthorhombic BaBr2 crystallites embedded in the glass matrix. The stimulation band of the PSL peaking at 580 nm is probably due to perturbed F centres in the crystallites. After X-irradiation the magnetic circular dichroism of the optical absorption showed a broad band in the spectral range between 440 and 800 nm, having a derivative-like line shape centred at about 600 nm. The spectrum consists of two overlapping bands: one, derivative-like, belongs probably to F-centres, whereas the second band, superimposed on the low-energy region of the F-centre band, is due to a hole centre.

AB - We report on a photostimulated luminescence (PSL) effect in Ce-doped fluorobromozirconate glasses. Small hexagonal or orthorhombic BaBr2 crystallites are formed in the glass upon annealing. The PSL shows a (381,415) nm doublet which is due to the 5d-4f luminescence of Ce3+ in the orthorhombic BaBr2 crystallites embedded in the glass matrix. The stimulation band of the PSL peaking at 580 nm is probably due to perturbed F centres in the crystallites. After X-irradiation the magnetic circular dichroism of the optical absorption showed a broad band in the spectral range between 440 and 800 nm, having a derivative-like line shape centred at about 600 nm. The spectrum consists of two overlapping bands: one, derivative-like, belongs probably to F-centres, whereas the second band, superimposed on the low-energy region of the F-centre band, is due to a hole centre.

KW - Fluorozirconate glass-ceramics

KW - Magnetic circular dichroism

KW - Photostimulated luminescence

KW - X-ray storage phosphor

UR - https://www.scopus.com/pages/publications/4344690840

U2 - 10.1016/j.radmeas.2004.01.003

DO - 10.1016/j.radmeas.2004.01.003

M3 - Article

AN - SCOPUS:4344690840

SN - 1350-4487

VL - 38

SP - 739

EP - 742

JO - Radiation Measurements

JF - Radiation Measurements

IS - 4-6

ER -

Radiation defects in Ce³⁺-activated fluorobromozirconate glass-ceramic X-ray storage phosphors

Abstract

Keywords

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