Thermoluminescence mechanisms in rare earth doped CaSO4
Identifieur interne :
006279 ( PascalFrancis/Corpus );
précédent :
006278;
suivant :
006280
Thermoluminescence mechanisms in rare earth doped CaSO4
Auteurs : V. Gerome ;
D. Lapraz ;
P. Iacconi ;
M. Benabdesselam ;
H. Prevost ;
A. BaumerSource :
-
Radiation protection dosimetry [ 0144-8420 ] ; 1999.
RBID : Pascal:99-0414274
Descripteurs français
English descriptors
Abstract
The thermostimulated luminescence (TSL) of powdered synthetic CaSO4 crystals is studied with various types of doping rare earth (RE3+) impurities: Dy3+, Tm3+, Ho3+, Er3+ or Gd3+. Fluorescence and optical diffuse reflectance data are presented. Valence changes of RE3+ are observed after X irradiation and/or thermal annealings. Defects in anionic SO2-4 groups (SOx types) are shown to be responsible for the UV lattice emission and the trapping centres, while the RE3+ ions are just radiative emission centres. The impact of the UV lattice emission on the energy transfer towards activators is confirmed. The TSL mechanism of CaSO4: RE3+ is finally discussed in the light of the observed optical properties and results from thermal annealing experiments.
Notice en format standard (ISO 2709)
Pour connaître la documentation sur le format Inist Standard.
| pA |
| A01 | 01 | 1 | | @0 0144-8420 |
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| A02 | 01 | | | @0 RPDODE |
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| A03 | | 1 | | @0 Radiat. prot. dosim. |
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| A05 | | | | @2 84 |
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| A06 | | | | @2 1-4 |
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| A08 | 01 | 1 | ENG | @1 Thermoluminescence mechanisms in rare earth doped CaSO4 |
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| A09 | 01 | 1 | ENG | @1 Solid state dosimetry. Part I |
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| A11 | 01 | 1 | | @1 GEROME (V.) |
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| A11 | 02 | 1 | | @1 LAPRAZ (D.) |
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| A11 | 03 | 1 | | @1 IACCONI (P.) |
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| A11 | 04 | 1 | | @1 BENABDESSELAM (M.) |
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| A11 | 05 | 1 | | @1 PREVOST (H.) |
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| A11 | 06 | 1 | | @1 BAUMER (A.) |
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| A12 | 01 | 1 | | @1 DELGADO (A.) @9 ed. |
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| A12 | 02 | 1 | | @1 GOMEZ ROS (J. M.) @9 ed. |
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| A12 | 03 | 1 | | @1 BOS (A. J. J.) @9 ed. |
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| A12 | 04 | 1 | | @1 BØTTER-JENSEN (L.) @9 ed. |
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| A12 | 05 | 1 | | @1 HOROWITZ (Y. S.) @9 ed. |
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| A12 | 06 | 1 | | @1 JULIUS (H. W.) @9 ed. |
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| A12 | 07 | 1 | | @1 KLEMIC (G.) @9 ed. |
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| A12 | 08 | 1 | | @1 KRON (T.) @9 ed. |
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| A14 | 01 | | | @1 Laboratoire de Physique Electronique des Solides (LPES), Centre de Recherche sur les Solides et leurs Applications (CRESA), Faculté des Sciences, Université de Nice-Sophia Antipolis, Parc Valrose @2 06108 Nice @3 FRA @Z 1 aut. @Z 2 aut. @Z 3 aut. @Z 4 aut. |
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| A14 | 02 | | | @1 UMR-CNRS 5507, Université de Montpellier II, Place E. Bataillon @2 34095 Montpellier @3 FRA @Z 5 aut. |
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| A14 | 03 | | | @1 UMR-CNRS 6526, Géosciences-Azur, Université de Nice-Sophia Antipolis, Parc Valrose @2 06108 Nice @3 FRA @Z 6 aut. |
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| A15 | 01 | | | @1 CIEMAT @3 ESP @Z 1 aut. |
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| A15 | 02 | | | @1 Delft T. University @3 NLD @Z 3 aut. |
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| A15 | 03 | | | @1 Ben Gurion University @3 ISR @Z 5 aut. |
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| A15 | 04 | | | @1 TNO @3 NLD @Z 6 aut. |
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| A15 | 05 | | | @1 EML (DOE) @3 USA @Z 7 aut. |
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| A15 | 06 | | | @1 Newcastle Mater Misericordiae Hospital @3 AUS @Z 8 aut. |
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| A20 | | | | @1 109-113 |
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| A21 | | | | @1 1999 |
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| A23 | 01 | | | @0 ENG |
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| A43 | 01 | | | @1 INIST @2 19318 @5 354000085782220240 |
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| A44 | | | | @0 0000 @1 © 1999 INIST-CNRS. All rights reserved. |
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| A45 | | | | @0 15 ref. |
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| A47 | 01 | 1 | | @0 99-0414274 |
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| A60 | | | | @1 P @2 C |
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| A61 | | | | @0 A |
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| A64 | 01 | 1 | | @0 Radiation protection dosimetry |
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| A66 | 01 | | | @0 GBR |
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| C01 | 01 | | ENG | @0 The thermostimulated luminescence (TSL) of powdered synthetic CaSO4 crystals is studied with various types of doping rare earth (RE3+) impurities: Dy3+, Tm3+, Ho3+, Er3+ or Gd3+. Fluorescence and optical diffuse reflectance data are presented. Valence changes of RE3+ are observed after X irradiation and/or thermal annealings. Defects in anionic SO2-4 groups (SOx types) are shown to be responsible for the UV lattice emission and the trapping centres, while the RE3+ ions are just radiative emission centres. The impact of the UV lattice emission on the energy transfer towards activators is confirmed. The TSL mechanism of CaSO4: RE3+ is finally discussed in the light of the observed optical properties and results from thermal annealing experiments. |
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| C02 | 01 | X | | @0 002A08F05 |
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| C03 | 01 | X | FRE | @0 Mécanisme action @5 01 |
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| C03 | 01 | X | ENG | @0 Mechanism of action @5 01 |
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| C03 | 01 | X | SPA | @0 Mecanismo acción @5 01 |
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| C03 | 02 | X | FRE | @0 Dosimètre thermoluminescent @5 02 |
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| C03 | 02 | X | ENG | @0 Thermoluminescent dosimeter @5 02 |
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| C03 | 02 | X | SPA | @0 Dosímetro termoluminescente @5 02 |
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| C03 | 03 | X | FRE | @0 Cristal @5 03 |
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| C03 | 03 | X | ENG | @0 Crystals @5 03 |
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| C03 | 03 | X | SPA | @0 Cristal @5 03 |
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| C03 | 04 | X | FRE | @0 Etude comparative @5 04 |
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| C03 | 04 | X | ENG | @0 Comparative study @5 04 |
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| C03 | 04 | X | SPA | @0 Estudio comparativo @5 04 |
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| C03 | 05 | X | FRE | @0 Composé dopé @5 05 |
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| C03 | 05 | X | ENG | @0 Doped compound @5 05 |
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| C03 | 05 | X | SPA | @0 Compuesto drogado @5 05 |
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| C03 | 06 | X | FRE | @0 Impureté @5 06 |
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| C03 | 06 | X | ENG | @0 Impurity @5 06 |
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| C03 | 06 | X | SPA | @0 Impureza @5 06 |
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| C03 | 07 | X | FRE | @0 Fluorescence @5 07 |
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| C03 | 07 | X | ENG | @0 Fluorescence @5 07 |
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| C03 | 07 | X | SPA | @0 Fluorescencia @5 07 |
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| C03 | 08 | X | FRE | @0 Réflexion optique @5 08 |
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| C03 | 08 | X | ENG | @0 Optical reflection @5 08 |
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| C03 | 08 | X | SPA | @0 Reflexión óptica @5 08 |
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| C03 | 09 | X | FRE | @0 Transfert énergie @5 09 |
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| C03 | 09 | X | ENG | @0 Energy transfer @5 09 |
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| C03 | 09 | X | SPA | @0 Transferencia energía @5 09 |
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| C03 | 10 | X | FRE | @0 Température recuit @5 10 |
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| C03 | 10 | X | ENG | @0 Annealing temperature @5 10 |
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| C03 | 10 | X | SPA | @0 Temperatura recocido @5 10 |
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| N21 | | | | @1 263 |
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|
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| pR |
| A30 | 01 | 1 | ENG | @1 International Conference on Solid State Dosimetry @2 12 @3 Burgos ESP @4 1998-07-05 |
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|
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Format Inist (serveur)
| NO : | PASCAL 99-0414274 INIST |
|---|
| ET : | Thermoluminescence mechanisms in rare earth doped CaSO4 |
|---|
| AU : | GEROME (V.); LAPRAZ (D.); IACCONI (P.); BENABDESSELAM (M.); PREVOST (H.); BAUMER (A.); DELGADO (A.); GOMEZ ROS (J. M.); BOS (A. J. J.); BØTTER-JENSEN (L.); HOROWITZ (Y. S.); JULIUS (H. W.); KLEMIC (G.); KRON (T.) |
|---|
| AF : | Laboratoire de Physique Electronique des Solides (LPES), Centre de Recherche sur les Solides et leurs Applications (CRESA), Faculté des Sciences, Université de Nice-Sophia Antipolis, Parc Valrose/06108 Nice/France (1 aut., 2 aut., 3 aut., 4 aut.); UMR-CNRS 5507, Université de Montpellier II, Place E. Bataillon/34095 Montpellier/France (5 aut.); UMR-CNRS 6526, Géosciences-Azur, Université de Nice-Sophia Antipolis, Parc Valrose/06108 Nice/France (6 aut.); CIEMAT/Espagne (1 aut.); Delft T. University/Pays-Bas (3 aut.); Ben Gurion University/Israël (5 aut.); TNO/Pays-Bas (6 aut.); EML (DOE)/Etats-Unis (7 aut.); Newcastle Mater Misericordiae Hospital/Australie (8 aut.) |
|---|
| DT : | Publication en série; Congrès; Niveau analytique |
|---|
| SO : | Radiation protection dosimetry; ISSN 0144-8420; Coden RPDODE; Royaume-Uni; Da. 1999; Vol. 84; No. 1-4; Pp. 109-113; Bibl. 15 ref. |
|---|
| LA : | Anglais |
|---|
| EA : | The thermostimulated luminescence (TSL) of powdered synthetic CaSO4 crystals is studied with various types of doping rare earth (RE3+) impurities: Dy3+, Tm3+, Ho3+, Er3+ or Gd3+. Fluorescence and optical diffuse reflectance data are presented. Valence changes of RE3+ are observed after X irradiation and/or thermal annealings. Defects in anionic SO2-4 groups (SOx types) are shown to be responsible for the UV lattice emission and the trapping centres, while the RE3+ ions are just radiative emission centres. The impact of the UV lattice emission on the energy transfer towards activators is confirmed. The TSL mechanism of CaSO4: RE3+ is finally discussed in the light of the observed optical properties and results from thermal annealing experiments. |
|---|
| CC : | 002A08F05 |
|---|
| FD : | Mécanisme action; Dosimètre thermoluminescent; Cristal; Etude comparative; Composé dopé; Impureté; Fluorescence; Réflexion optique; Transfert énergie; Température recuit |
|---|
| ED : | Mechanism of action; Thermoluminescent dosimeter; Crystals; Comparative study; Doped compound; Impurity; Fluorescence; Optical reflection; Energy transfer; Annealing temperature |
|---|
| SD : | Mecanismo acción; Dosímetro termoluminescente; Cristal; Estudio comparativo; Compuesto drogado; Impureza; Fluorescencia; Reflexión óptica; Transferencia energía; Temperatura recocido |
|---|
| LO : | INIST-19318.354000085782220240 |
|---|
| ID : | 99-0414274 |
|---|
Links to Exploration step
Pascal:99-0414274
Le document en format XML
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<s2>06108 Nice</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
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<affiliation><inist:fA14 i1="01"><s1>Laboratoire de Physique Electronique des Solides (LPES), Centre de Recherche sur les Solides et leurs Applications (CRESA), Faculté des Sciences, Université de Nice-Sophia Antipolis, Parc Valrose</s1>
<s2>06108 Nice</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
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<s2>06108 Nice</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
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<s2>06108 Nice</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
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<s3>FRA</s3>
<sZ>5 aut.</sZ>
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<s2>06108 Nice</s2>
<s3>FRA</s3>
<sZ>6 aut.</sZ>
</inist:fA14><series><title level="j" type="main">Radiation protection dosimetry</title>
<title level="j" type="abbreviated">Radiat. prot. dosim.</title>
<idno type="ISSN">0144-8420</idno>
<imprint><date when="1999">1999</date>
</imprint><seriesStmt><title level="j" type="main">Radiation protection dosimetry</title>
<title level="j" type="abbreviated">Radiat. prot. dosim.</title>
<idno type="ISSN">0144-8420</idno>
</seriesStmt><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Annealing temperature</term>
<term>Comparative study</term>
<term>Crystals</term>
<term>Doped compound</term>
<term>Energy transfer</term>
<term>Fluorescence</term>
<term>Impurity</term>
<term>Mechanism of action</term>
<term>Optical reflection</term>
<term>Thermoluminescent dosimeter</term>
</keywords><keywords scheme="Pascal" xml:lang="fr"><term>Mécanisme action</term>
<term>Dosimètre thermoluminescent</term>
<term>Cristal</term>
<term>Etude comparative</term>
<term>Composé dopé</term>
<term>Impureté</term>
<term>Fluorescence</term>
<term>Réflexion optique</term>
<term>Transfert énergie</term>
<term>Température recuit</term>
</keywords><front><div type="abstract" xml:lang="en">The thermostimulated luminescence (TSL) of powdered synthetic CaSO<sub>4</sub>
crystals is studied with various types of doping rare earth (RE<sup>3+</sup>
) impurities: Dy<sup>3+</sup>
, Tm<sup>3+</sup>
, Ho<sup>3+</sup>
, Er<sup>3+</sup>
or Gd<sup>3+</sup>
. Fluorescence and optical diffuse reflectance data are presented. Valence changes of RE<sup>3+</sup>
are observed after X irradiation and/or thermal annealings. Defects in anionic SO<sup>2-</sup>
<sub>4</sub>
groups (SO<sub>x</sub>
types) are shown to be responsible for the UV lattice emission and the trapping centres, while the RE<sup>3+</sup>
ions are just radiative emission centres. The impact of the UV lattice emission on the energy transfer towards activators is confirmed. The TSL mechanism of CaSO<sub>4</sub>
: RE<sup>3+</sup>
is finally discussed in the light of the observed optical properties and results from thermal annealing experiments.</div><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0144-8420</s0>
</fA01><fA02 i1="01"><s0>RPDODE</s0>
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</fA03><fA06><s2>1-4</s2>
</fA06><fA08 i1="01" i2="1" l="ENG"><s1>Thermoluminescence mechanisms in rare earth doped CaSO<sub>4</sub>
</s1><fA09 i1="01" i2="1" l="ENG"><s1>Solid state dosimetry. Part I</s1>
</fA09><fA11 i1="01" i2="1"><s1>GEROME (V.)</s1>
</fA11><fA11 i1="02" i2="1"><s1>LAPRAZ (D.)</s1>
</fA11><fA11 i1="03" i2="1"><s1>IACCONI (P.)</s1>
</fA11><fA11 i1="04" i2="1"><s1>BENABDESSELAM (M.)</s1>
</fA11><fA11 i1="05" i2="1"><s1>PREVOST (H.)</s1>
</fA11><fA11 i1="06" i2="1"><s1>BAUMER (A.)</s1>
</fA11><fA12 i1="01" i2="1"><s1>DELGADO (A.)</s1>
<s9>ed.</s9>
</fA12><fA12 i1="02" i2="1"><s1>GOMEZ ROS (J. M.)</s1>
<s9>ed.</s9>
</fA12><fA12 i1="03" i2="1"><s1>BOS (A. J. J.)</s1>
<s9>ed.</s9>
</fA12><fA12 i1="04" i2="1"><s1>BØTTER-JENSEN (L.)</s1>
<s9>ed.</s9>
</fA12><fA12 i1="05" i2="1"><s1>HOROWITZ (Y. S.)</s1>
<s9>ed.</s9>
</fA12><fA12 i1="06" i2="1"><s1>JULIUS (H. W.)</s1>
<s9>ed.</s9>
</fA12><fA12 i1="07" i2="1"><s1>KLEMIC (G.)</s1>
<s9>ed.</s9>
</fA12><fA12 i1="08" i2="1"><s1>KRON (T.)</s1>
<s9>ed.</s9>
</fA12><fA14 i1="01"><s1>Laboratoire de Physique Electronique des Solides (LPES), Centre de Recherche sur les Solides et leurs Applications (CRESA), Faculté des Sciences, Université de Nice-Sophia Antipolis, Parc Valrose</s1>
<s2>06108 Nice</s2>
<s3>FRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</fA14><fA14 i1="02"><s1>UMR-CNRS 5507, Université de Montpellier II, Place E. Bataillon</s1>
<s2>34095 Montpellier</s2>
<s3>FRA</s3>
<sZ>5 aut.</sZ>
</fA14><fA14 i1="03"><s1>UMR-CNRS 6526, Géosciences-Azur, Université de Nice-Sophia Antipolis, Parc Valrose</s1>
<s2>06108 Nice</s2>
<s3>FRA</s3>
<sZ>6 aut.</sZ>
</fA14><fA15 i1="01"><s1>CIEMAT</s1>
<s3>ESP</s3>
<sZ>1 aut.</sZ>
</fA15><fA15 i1="02"><s1>Delft T. University</s1>
<s3>NLD</s3>
<sZ>3 aut.</sZ>
</fA15><fA15 i1="03"><s1>Ben Gurion University</s1>
<s3>ISR</s3>
<sZ>5 aut.</sZ>
</fA15><fA15 i1="04"><s1>TNO</s1>
<s3>NLD</s3>
<sZ>6 aut.</sZ>
</fA15><fA15 i1="05"><s1>EML (DOE)</s1>
<s3>USA</s3>
<sZ>7 aut.</sZ>
</fA15><fA15 i1="06"><s1>Newcastle Mater Misericordiae Hospital</s1>
<s3>AUS</s3>
<sZ>8 aut.</sZ>
</fA15><fA20><s1>109-113</s1>
</fA20><fA21><s1>1999</s1>
</fA21><fA23 i1="01"><s0>ENG</s0>
</fA23><fA43 i1="01"><s1>INIST</s1>
<s2>19318</s2>
<s5>354000085782220240</s5>
</fA43><fA44><s0>0000</s0>
<s1>© 1999 INIST-CNRS. All rights reserved.</s1>
</fA44><fA45><s0>15 ref.</s0>
</fA45><fA47 i1="01" i2="1"><s0>99-0414274</s0>
</fA47><fA60><s1>P</s1>
<s2>C</s2>
</fA60><fA64 i1="01" i2="1"><s0>Radiation protection dosimetry</s0>
</fA64><fA66 i1="01"><s0>GBR</s0>
</fA66><fC01 i1="01" l="ENG"><s0>The thermostimulated luminescence (TSL) of powdered synthetic CaSO<sub>4</sub>
crystals is studied with various types of doping rare earth (RE<sup>3+</sup>
) impurities: Dy<sup>3+</sup>
, Tm<sup>3+</sup>
, Ho<sup>3+</sup>
, Er<sup>3+</sup>
or Gd<sup>3+</sup>
. Fluorescence and optical diffuse reflectance data are presented. Valence changes of RE<sup>3+</sup>
are observed after X irradiation and/or thermal annealings. Defects in anionic SO<sup>2-</sup>
<sub>4</sub>
groups (SO<sub>x</sub>
types) are shown to be responsible for the UV lattice emission and the trapping centres, while the RE<sup>3+</sup>
ions are just radiative emission centres. The impact of the UV lattice emission on the energy transfer towards activators is confirmed. The TSL mechanism of CaSO<sub>4</sub>
: RE<sup>3+</sup>
is finally discussed in the light of the observed optical properties and results from thermal annealing experiments.</s0><fC02 i1="01" i2="X"><s0>002A08F05</s0>
</fC02><fC03 i1="01" i2="X" l="FRE"><s0>Mécanisme action</s0>
<s5>01</s5>
</fC03><fC03 i1="01" i2="X" l="ENG"><s0>Mechanism of action</s0>
<s5>01</s5>
</fC03><fC03 i1="01" i2="X" l="SPA"><s0>Mecanismo acción</s0>
<s5>01</s5>
</fC03><fC03 i1="02" i2="X" l="FRE"><s0>Dosimètre thermoluminescent</s0>
<s5>02</s5>
</fC03><fC03 i1="02" i2="X" l="ENG"><s0>Thermoluminescent dosimeter</s0>
<s5>02</s5>
</fC03><fC03 i1="02" i2="X" l="SPA"><s0>Dosímetro termoluminescente</s0>
<s5>02</s5>
</fC03><fC03 i1="03" i2="X" l="FRE"><s0>Cristal</s0>
<s5>03</s5>
</fC03><fC03 i1="03" i2="X" l="ENG"><s0>Crystals</s0>
<s5>03</s5>
</fC03><fC03 i1="03" i2="X" l="SPA"><s0>Cristal</s0>
<s5>03</s5>
</fC03><fC03 i1="04" i2="X" l="FRE"><s0>Etude comparative</s0>
<s5>04</s5>
</fC03><fC03 i1="04" i2="X" l="ENG"><s0>Comparative study</s0>
<s5>04</s5>
</fC03><fC03 i1="04" i2="X" l="SPA"><s0>Estudio comparativo</s0>
<s5>04</s5>
</fC03><fC03 i1="05" i2="X" l="FRE"><s0>Composé dopé</s0>
<s5>05</s5>
</fC03><fC03 i1="05" i2="X" l="ENG"><s0>Doped compound</s0>
<s5>05</s5>
</fC03><fC03 i1="05" i2="X" l="SPA"><s0>Compuesto drogado</s0>
<s5>05</s5>
</fC03><fC03 i1="06" i2="X" l="FRE"><s0>Impureté</s0>
<s5>06</s5>
</fC03><fC03 i1="06" i2="X" l="ENG"><s0>Impurity</s0>
<s5>06</s5>
</fC03><fC03 i1="06" i2="X" l="SPA"><s0>Impureza</s0>
<s5>06</s5>
</fC03><fC03 i1="07" i2="X" l="FRE"><s0>Fluorescence</s0>
<s5>07</s5>
</fC03><fC03 i1="07" i2="X" l="ENG"><s0>Fluorescence</s0>
<s5>07</s5>
</fC03><fC03 i1="07" i2="X" l="SPA"><s0>Fluorescencia</s0>
<s5>07</s5>
</fC03><fC03 i1="08" i2="X" l="FRE"><s0>Réflexion optique</s0>
<s5>08</s5>
</fC03><fC03 i1="08" i2="X" l="ENG"><s0>Optical reflection</s0>
<s5>08</s5>
</fC03><fC03 i1="08" i2="X" l="SPA"><s0>Reflexión óptica</s0>
<s5>08</s5>
</fC03><fC03 i1="09" i2="X" l="FRE"><s0>Transfert énergie</s0>
<s5>09</s5>
</fC03><fC03 i1="09" i2="X" l="ENG"><s0>Energy transfer</s0>
<s5>09</s5>
</fC03><fC03 i1="09" i2="X" l="SPA"><s0>Transferencia energía</s0>
<s5>09</s5>
</fC03><fC03 i1="10" i2="X" l="FRE"><s0>Température recuit</s0>
<s5>10</s5>
</fC03><fC03 i1="10" i2="X" l="ENG"><s0>Annealing temperature</s0>
<s5>10</s5>
</fC03><fC03 i1="10" i2="X" l="SPA"><s0>Temperatura recocido</s0>
<s5>10</s5>
</fC03><fN21><s1>263</s1>
</fN21><pR><fA30 i1="01" i2="1" l="ENG"><s1>International Conference on Solid State Dosimetry</s1>
<s2>12</s2>
<s3>Burgos ESP</s3>
<s4>1998-07-05</s4>
</fA30><server><NO>PASCAL 99-0414274 INIST</NO>
<ET>Thermoluminescence mechanisms in rare earth doped CaSO<sub>4</sub>
</ET><AU>GEROME (V.); LAPRAZ (D.); IACCONI (P.); BENABDESSELAM (M.); PREVOST (H.); BAUMER (A.); DELGADO (A.); GOMEZ ROS (J. M.); BOS (A. J. J.); BØTTER-JENSEN (L.); HOROWITZ (Y. S.); JULIUS (H. W.); KLEMIC (G.); KRON (T.)</AU>
<AF>Laboratoire de Physique Electronique des Solides (LPES), Centre de Recherche sur les Solides et leurs Applications (CRESA), Faculté des Sciences, Université de Nice-Sophia Antipolis, Parc Valrose/06108 Nice/France (1 aut., 2 aut., 3 aut., 4 aut.); UMR-CNRS 5507, Université de Montpellier II, Place E. Bataillon/34095 Montpellier/France (5 aut.); UMR-CNRS 6526, Géosciences-Azur, Université de Nice-Sophia Antipolis, Parc Valrose/06108 Nice/France (6 aut.); CIEMAT/Espagne (1 aut.); Delft T. University/Pays-Bas (3 aut.); Ben Gurion University/Israël (5 aut.); TNO/Pays-Bas (6 aut.); EML (DOE)/Etats-Unis (7 aut.); Newcastle Mater Misericordiae Hospital/Australie (8 aut.)</AF>
<DT>Publication en série; Congrès; Niveau analytique</DT>
<SO>Radiation protection dosimetry; ISSN 0144-8420; Coden RPDODE; Royaume-Uni; Da. 1999; Vol. 84; No. 1-4; Pp. 109-113; Bibl. 15 ref.</SO>
<LA>Anglais</LA>
<EA>The thermostimulated luminescence (TSL) of powdered synthetic CaSO<sub>4</sub>
crystals is studied with various types of doping rare earth (RE<sup>3+</sup>
) impurities: Dy<sup>3+</sup>
, Tm<sup>3+</sup>
, Ho<sup>3+</sup>
, Er<sup>3+</sup>
or Gd<sup>3+</sup>
. Fluorescence and optical diffuse reflectance data are presented. Valence changes of RE<sup>3+</sup>
are observed after X irradiation and/or thermal annealings. Defects in anionic SO<sup>2-</sup>
<sub>4</sub>
groups (SO<sub>x</sub>
types) are shown to be responsible for the UV lattice emission and the trapping centres, while the RE<sup>3+</sup>
ions are just radiative emission centres. The impact of the UV lattice emission on the energy transfer towards activators is confirmed. The TSL mechanism of CaSO<sub>4</sub>
: RE<sup>3+</sup>
is finally discussed in the light of the observed optical properties and results from thermal annealing experiments.</EA><CC>002A08F05</CC>
<FD>Mécanisme action; Dosimètre thermoluminescent; Cristal; Etude comparative; Composé dopé; Impureté; Fluorescence; Réflexion optique; Transfert énergie; Température recuit</FD>
<ED>Mechanism of action; Thermoluminescent dosimeter; Crystals; Comparative study; Doped compound; Impurity; Fluorescence; Optical reflection; Energy transfer; Annealing temperature</ED>
<SD>Mecanismo acción; Dosímetro termoluminescente; Cristal; Estudio comparativo; Compuesto drogado; Impureza; Fluorescencia; Reflexión óptica; Transferencia energía; Temperatura recocido</SD>
<LO>INIST-19318.354000085782220240</LO>
<ID>99-0414274</ID>
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