RbBr and CsBr doped with Eu2+ as new competitive X-ray storage phosphors

S. Schweizer; U. Rogulis; S. Assmann; J. M. Spaeth

doi:10.1016/S1350-4487(01)00035-X

RbBr and CsBr doped with Eu²⁺ as new competitive X-ray storage phosphors

S. Schweizer^*
, U. Rogulis
, S. Assmann
, J. M. Spaeth

^*Corresponding author for this work

Laboratory of Spectroscopy, Institute of Solid State Physics

Paderborn University

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

35 Citations (Scopus)

Abstract

After X-irradiation of the alkali halides RbBr and CsBr doped with divalent Eu a significant photostimulated luminescence (PSL) effect was found. In both systems the electron trap centre is an F centre, the hole trap centre is still unknown. The Eu²⁺ aggregation with cation vacancies plays an important role. Although all of the different Eu²⁺ aggregates seem to show PSL effects, they have different PSL efficiencies, decay times and spectral characteristics. In the case of RbBr:Eu²⁺ it was possible to investigate the different Eu²⁺-cation vacancy aggregate states by magnetic circular dichroism of the optical absorption (MCDA) and MCDA-detected electron paramagnetic resonance. In Eu²⁺-doped CsBr no paramagnetic Eu²⁺ aggregate nor isolated Eu²⁺ was found, in spite of intense and typical Eu²⁺-related PSL effects.

Original language	English
Article number	1660
Pages (from-to)	483-486
Number of pages	4
Journal	Radiation Measurements
Volume	33
Issue number	5
DOIs	https://doi.org/10.1016/S1350-4487(01)00035-X
Publication status	Published - 2001

Keywords

Magnetic circular dichroism
Photostimulated luminescence
RbBr:Eu and CsBr:Eu
X-ray storage phosphor

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10.1016/S1350-4487(01)00035-X

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title = "RbBr and CsBr doped with Eu2+ as new competitive X-ray storage phosphors",

abstract = "After X-irradiation of the alkali halides RbBr and CsBr doped with divalent Eu a significant photostimulated luminescence (PSL) effect was found. In both systems the electron trap centre is an F centre, the hole trap centre is still unknown. The Eu2+ aggregation with cation vacancies plays an important role. Although all of the different Eu2+ aggregates seem to show PSL effects, they have different PSL efficiencies, decay times and spectral characteristics. In the case of RbBr:Eu2+ it was possible to investigate the different Eu2+-cation vacancy aggregate states by magnetic circular dichroism of the optical absorption (MCDA) and MCDA-detected electron paramagnetic resonance. In Eu2+-doped CsBr no paramagnetic Eu2+ aggregate nor isolated Eu2+ was found, in spite of intense and typical Eu2+-related PSL effects.",

keywords = "Magnetic circular dichroism, Photostimulated luminescence, RbBr:Eu and CsBr:Eu, X-ray storage phosphor",

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TY - JOUR

T1 - RbBr and CsBr doped with Eu2+ as new competitive X-ray storage phosphors

AU - Schweizer, S.

AU - Rogulis, U.

AU - Assmann, S.

AU - Spaeth, J. M.

PY - 2001

Y1 - 2001

N2 - After X-irradiation of the alkali halides RbBr and CsBr doped with divalent Eu a significant photostimulated luminescence (PSL) effect was found. In both systems the electron trap centre is an F centre, the hole trap centre is still unknown. The Eu2+ aggregation with cation vacancies plays an important role. Although all of the different Eu2+ aggregates seem to show PSL effects, they have different PSL efficiencies, decay times and spectral characteristics. In the case of RbBr:Eu2+ it was possible to investigate the different Eu2+-cation vacancy aggregate states by magnetic circular dichroism of the optical absorption (MCDA) and MCDA-detected electron paramagnetic resonance. In Eu2+-doped CsBr no paramagnetic Eu2+ aggregate nor isolated Eu2+ was found, in spite of intense and typical Eu2+-related PSL effects.

AB - After X-irradiation of the alkali halides RbBr and CsBr doped with divalent Eu a significant photostimulated luminescence (PSL) effect was found. In both systems the electron trap centre is an F centre, the hole trap centre is still unknown. The Eu2+ aggregation with cation vacancies plays an important role. Although all of the different Eu2+ aggregates seem to show PSL effects, they have different PSL efficiencies, decay times and spectral characteristics. In the case of RbBr:Eu2+ it was possible to investigate the different Eu2+-cation vacancy aggregate states by magnetic circular dichroism of the optical absorption (MCDA) and MCDA-detected electron paramagnetic resonance. In Eu2+-doped CsBr no paramagnetic Eu2+ aggregate nor isolated Eu2+ was found, in spite of intense and typical Eu2+-related PSL effects.

KW - Magnetic circular dichroism

KW - Photostimulated luminescence

KW - RbBr:Eu and CsBr:Eu

KW - X-ray storage phosphor

UR - https://www.scopus.com/pages/publications/0034742044

U2 - 10.1016/S1350-4487(01)00035-X

DO - 10.1016/S1350-4487(01)00035-X

M3 - Article

AN - SCOPUS:0034742044

SN - 1350-4487

VL - 33

SP - 483

EP - 486

JO - Radiation Measurements

JF - Radiation Measurements

IS - 5

M1 - 1660

ER -

RbBr and CsBr doped with Eu²⁺ as new competitive X-ray storage phosphors

Abstract

Keywords

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