Authors:
V. Natarajan Bhabha Atomic Research Centre Radiochemistry Division Mumbai 400 085 India

Search for other papers by V. Natarajan in
Current site
Google Scholar
PubMed
Close
,
T. Seshagiri Bhabha Atomic Research Centre Radiochemistry Division Mumbai 400 085 India

Search for other papers by T. Seshagiri in
Current site
Google Scholar
PubMed
Close
,
R. Kadam Bhabha Atomic Research Centre Radiochemistry Division Mumbai 400 085 India

Search for other papers by R. Kadam in
Current site
Google Scholar
PubMed
Close
,
A. Dhobale Bhabha Atomic Research Centre Radiochemistry Division Mumbai 400 085 India

Search for other papers by A. Dhobale in
Current site
Google Scholar
PubMed
Close
, and
A. Tyagi Bhabha Atomic Research Centre Applied Chemistry Division Mumbai 400 085 India

Search for other papers by A. Tyagi in
Current site
Google Scholar
PubMed
Close
Restricted access

Abstract  

Thermally stimulated luminescence (TSL), electron paramagnetic resonance (EPR) and photo-acoustic spectroscopy (PAS) techniques were used to investigate the radiation induced centers in polycrystalline LaBa2F7 containing trace amounts of other rare-earths particularly Gd3+ and Sm3+. The TSL glow curve of LaBa2F7 after g-irradiation to a dose of 3 kGy had shown a weak TSL glow peak at 390 K and a much stronger one at 495 K. The EPR spectra of the g-irradiated LaBa2F7 samples showed the presence of O- and O2- ions. Temperature dependence study of the EPR spectra showed that the thermal destruction of O- ion occurs in the 460-490 K temperature range. In g-irradiated samples, O- and F-centers were identified by PAS. The correlation of EPR and PAS results indicate that the prominent TSL glow at 495 K is associated with the thermal destruction of O- radical ion. The trap parameters viz. trap depth and frequency factor have been determined from TSL data.

  • Collapse
  • Expand

To see the editorial board, please visit the website of Springer Nature.

Manuscript Submission: HERE

For subscription options, please visit the website of Springer Nature.

Journal of Radionalytical and Nuclear Chemistry
Language English
Size A4
Year of
Foundation
1968
Volumes
per Year
1
Issues
per Year
12
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 0236-5731 (Print)
ISSN 1588-2780 (Online)