Magnetic resonance investigations of LaCl3:Ce3+ scintillators

U. Rogulis; S. Schweizer; J. M. Spaeth; E. V.D. Van Loef; P. Dorenbos; C. W.E. Van Eijk; K. Krämer; H. U. Güdel

doi:10.1080/10420150215785

Magnetic resonance investigations of LaCl₃:Ce³⁺ scintillators

U. Rogulis^*
, S. Schweizer
, J. M. Spaeth
, E. V.D. Van Loef
, P. Dorenbos
, C. W.E. Van Eijk
, K. Krämer
, H. U. Güdel

^*Corresponding author for this work

Laboratory of Spectroscopy, Institute of Solid State Physics

Paderborn University
Delft University of Technology
University of Bern

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

14 Citations (Scopus)

Abstract

In undoped and Ce³⁺-doped LaCl₃ EPR has been detected in the X-ray luminescence (XL-EPR) in K-band (25 GHz) at 1.5 K. Two excited triplet states with different EPR parameters and spectral shapes could be separated, both triplet states have been attributed to "out-of-plane" self-trapped excitons (STE) in LaCl₃. No EPR signals of V_K centres (self-trapped holes) could be detected in undoped or Ce ³⁺-doped LaCl₃ after X-irradiation at low temperatures. X-irradiation of undoped LaCl₃ creates also an EPR spectrum which can be tentatively attributed to F-type defects. The scintillation mechanism is discussed.

Original language	English
Pages (from-to)	951-955
Number of pages	5
Journal	Radiation Effects and Defects in Solids
Volume	157
Issue number	6-12
DOIs	https://doi.org/10.1080/10420150215785
Publication status	Published - 2002

Keywords

LaCl:Ce scintillator
Magnetic resonance
Self-trapped excitons

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10.1080/10420150215785

Cite this

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title = "Magnetic resonance investigations of LaCl3:Ce3+ scintillators",

abstract = "In undoped and Ce3+-doped LaCl3 EPR has been detected in the X-ray luminescence (XL-EPR) in K-band (25 GHz) at 1.5 K. Two excited triplet states with different EPR parameters and spectral shapes could be separated, both triplet states have been attributed to {"}out-of-plane{"} self-trapped excitons (STE) in LaCl3. No EPR signals of VK centres (self-trapped holes) could be detected in undoped or Ce 3+-doped LaCl3 after X-irradiation at low temperatures. X-irradiation of undoped LaCl3 creates also an EPR spectrum which can be tentatively attributed to F-type defects. The scintillation mechanism is discussed.",

keywords = "LaCl:Ce scintillator, Magnetic resonance, Self-trapped excitons",

author = "U. Rogulis and S. Schweizer and Spaeth, \{J. M.\} and \{Van Loef\}, \{E. V.D.\} and P. Dorenbos and \{Van Eijk\}, \{C. W.E.\} and K. Kr{\"a}mer and G{\"u}del, \{H. U.\}",

year = "2002",

doi = "10.1080/10420150215785",

language = "English",

volume = "157",

pages = "951--955",

journal = "Radiation Effects and Defects in Solids",

issn = "1042-0150",

publisher = "Taylor and Francis Ltd.",

number = "6-12",

}

TY - JOUR

T1 - Magnetic resonance investigations of LaCl3:Ce3+ scintillators

AU - Rogulis, U.

AU - Schweizer, S.

AU - Spaeth, J. M.

AU - Van Loef, E. V.D.

AU - Dorenbos, P.

AU - Van Eijk, C. W.E.

AU - Krämer, K.

AU - Güdel, H. U.

PY - 2002

Y1 - 2002

N2 - In undoped and Ce3+-doped LaCl3 EPR has been detected in the X-ray luminescence (XL-EPR) in K-band (25 GHz) at 1.5 K. Two excited triplet states with different EPR parameters and spectral shapes could be separated, both triplet states have been attributed to "out-of-plane" self-trapped excitons (STE) in LaCl3. No EPR signals of VK centres (self-trapped holes) could be detected in undoped or Ce 3+-doped LaCl3 after X-irradiation at low temperatures. X-irradiation of undoped LaCl3 creates also an EPR spectrum which can be tentatively attributed to F-type defects. The scintillation mechanism is discussed.

AB - In undoped and Ce3+-doped LaCl3 EPR has been detected in the X-ray luminescence (XL-EPR) in K-band (25 GHz) at 1.5 K. Two excited triplet states with different EPR parameters and spectral shapes could be separated, both triplet states have been attributed to "out-of-plane" self-trapped excitons (STE) in LaCl3. No EPR signals of VK centres (self-trapped holes) could be detected in undoped or Ce 3+-doped LaCl3 after X-irradiation at low temperatures. X-irradiation of undoped LaCl3 creates also an EPR spectrum which can be tentatively attributed to F-type defects. The scintillation mechanism is discussed.

KW - LaCl:Ce scintillator

KW - Magnetic resonance

KW - Self-trapped excitons

UR - https://www.scopus.com/pages/publications/0012473267

U2 - 10.1080/10420150215785

DO - 10.1080/10420150215785

M3 - Article

AN - SCOPUS:0012473267

SN - 1042-0150

VL - 157

SP - 951

EP - 955

JO - Radiation Effects and Defects in Solids

JF - Radiation Effects and Defects in Solids

IS - 6-12

ER -

Magnetic resonance investigations of LaCl₃:Ce³⁺ scintillators

Abstract

Keywords

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