Low temperature studies in LiF:Mg,Cu,P

V. K. Mathur, P. K. Bandyopadhyay, J. H. Barkyoumb, G. G. Cai, Y. S. Horowitz, L. Oster

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Despite extensive investigations carried out in LiF:Mg,Cu,P, the nature of the emission centre is not clearly understood. Results of X ray excited emission in this material at room temperature and at 16 K are presented to obtain more data that can throw light on the emission characteristics of this material. At room temperature only a single emission peak is seen around 390 nm but at 16 K the emission appears to consist of more than one emission band. The emission spectra could be fitted with three bands with peaks at 332, 385 and 447 nm. The X ray excited emission at 16 K after annealing at 573 K for 5 min suppresses the 332 nm emission but enhances 447 nm emission. Moreover, annealing at 573 K greatly reduces the emission intensity, which signifies that the luminescent centres are also destroyed in this process. Temperature-dependent X ray excited fluorescence below room temperature provides evidence of the existence of shallow traps, which give rise to a thermoluminescence peak around 130 K. On the basis of the present investigations it is proposed that the complex nature of the emission may be related to the formation of donor-acceptor pairs in this material. The possible nature of this donor-acceptor complex is discussed.

Original languageEnglish (US)
Pages (from-to)103-106
Number of pages4
JournalRadiation protection dosimetry
Volume100
Issue number1-4
StatePublished - Oct 19 2002

Fingerprint

Temperature
X-Rays
Fluorescence
room temperature
LiF-Mg,Cu,P
annealing
x rays
thermoluminescence
emission spectra
traps
fluorescence

All Science Journal Classification (ASJC) codes

  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

Cite this

Mathur, V. K., Bandyopadhyay, P. K., Barkyoumb, J. H., Cai, G. G., Horowitz, Y. S., & Oster, L. (2002). Low temperature studies in LiF:Mg,Cu,P. Radiation protection dosimetry, 100(1-4), 103-106.
Mathur, V. K. ; Bandyopadhyay, P. K. ; Barkyoumb, J. H. ; Cai, G. G. ; Horowitz, Y. S. ; Oster, L. / Low temperature studies in LiF:Mg,Cu,P. In: Radiation protection dosimetry. 2002 ; Vol. 100, No. 1-4. pp. 103-106.
@article{062c2a3ea73e4a19806c0870db34c251,
title = "Low temperature studies in LiF:Mg,Cu,P",
abstract = "Despite extensive investigations carried out in LiF:Mg,Cu,P, the nature of the emission centre is not clearly understood. Results of X ray excited emission in this material at room temperature and at 16 K are presented to obtain more data that can throw light on the emission characteristics of this material. At room temperature only a single emission peak is seen around 390 nm but at 16 K the emission appears to consist of more than one emission band. The emission spectra could be fitted with three bands with peaks at 332, 385 and 447 nm. The X ray excited emission at 16 K after annealing at 573 K for 5 min suppresses the 332 nm emission but enhances 447 nm emission. Moreover, annealing at 573 K greatly reduces the emission intensity, which signifies that the luminescent centres are also destroyed in this process. Temperature-dependent X ray excited fluorescence below room temperature provides evidence of the existence of shallow traps, which give rise to a thermoluminescence peak around 130 K. On the basis of the present investigations it is proposed that the complex nature of the emission may be related to the formation of donor-acceptor pairs in this material. The possible nature of this donor-acceptor complex is discussed.",
author = "Mathur, {V. K.} and Bandyopadhyay, {P. K.} and Barkyoumb, {J. H.} and Cai, {G. G.} and Horowitz, {Y. S.} and L. Oster",
year = "2002",
month = "10",
day = "19",
language = "English (US)",
volume = "100",
pages = "103--106",
journal = "Radiation Protection Dosimetry",
issn = "0144-8420",
publisher = "Oxford University Press",
number = "1-4",

}

Mathur, VK, Bandyopadhyay, PK, Barkyoumb, JH, Cai, GG, Horowitz, YS & Oster, L 2002, 'Low temperature studies in LiF:Mg,Cu,P', Radiation protection dosimetry, vol. 100, no. 1-4, pp. 103-106.

Low temperature studies in LiF:Mg,Cu,P. / Mathur, V. K.; Bandyopadhyay, P. K.; Barkyoumb, J. H.; Cai, G. G.; Horowitz, Y. S.; Oster, L.

In: Radiation protection dosimetry, Vol. 100, No. 1-4, 19.10.2002, p. 103-106.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Low temperature studies in LiF:Mg,Cu,P

AU - Mathur, V. K.

AU - Bandyopadhyay, P. K.

AU - Barkyoumb, J. H.

AU - Cai, G. G.

AU - Horowitz, Y. S.

AU - Oster, L.

PY - 2002/10/19

Y1 - 2002/10/19

N2 - Despite extensive investigations carried out in LiF:Mg,Cu,P, the nature of the emission centre is not clearly understood. Results of X ray excited emission in this material at room temperature and at 16 K are presented to obtain more data that can throw light on the emission characteristics of this material. At room temperature only a single emission peak is seen around 390 nm but at 16 K the emission appears to consist of more than one emission band. The emission spectra could be fitted with three bands with peaks at 332, 385 and 447 nm. The X ray excited emission at 16 K after annealing at 573 K for 5 min suppresses the 332 nm emission but enhances 447 nm emission. Moreover, annealing at 573 K greatly reduces the emission intensity, which signifies that the luminescent centres are also destroyed in this process. Temperature-dependent X ray excited fluorescence below room temperature provides evidence of the existence of shallow traps, which give rise to a thermoluminescence peak around 130 K. On the basis of the present investigations it is proposed that the complex nature of the emission may be related to the formation of donor-acceptor pairs in this material. The possible nature of this donor-acceptor complex is discussed.

AB - Despite extensive investigations carried out in LiF:Mg,Cu,P, the nature of the emission centre is not clearly understood. Results of X ray excited emission in this material at room temperature and at 16 K are presented to obtain more data that can throw light on the emission characteristics of this material. At room temperature only a single emission peak is seen around 390 nm but at 16 K the emission appears to consist of more than one emission band. The emission spectra could be fitted with three bands with peaks at 332, 385 and 447 nm. The X ray excited emission at 16 K after annealing at 573 K for 5 min suppresses the 332 nm emission but enhances 447 nm emission. Moreover, annealing at 573 K greatly reduces the emission intensity, which signifies that the luminescent centres are also destroyed in this process. Temperature-dependent X ray excited fluorescence below room temperature provides evidence of the existence of shallow traps, which give rise to a thermoluminescence peak around 130 K. On the basis of the present investigations it is proposed that the complex nature of the emission may be related to the formation of donor-acceptor pairs in this material. The possible nature of this donor-acceptor complex is discussed.

UR - http://www.scopus.com/inward/record.url?scp=0036387693&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036387693&partnerID=8YFLogxK

M3 - Article

C2 - 12382838

AN - SCOPUS:0036387693

VL - 100

SP - 103

EP - 106

JO - Radiation Protection Dosimetry

JF - Radiation Protection Dosimetry

SN - 0144-8420

IS - 1-4

ER -

Mathur VK, Bandyopadhyay PK, Barkyoumb JH, Cai GG, Horowitz YS, Oster L. Low temperature studies in LiF:Mg,Cu,P. Radiation protection dosimetry. 2002 Oct 19;100(1-4):103-106.