In-situ investigation of point defects kinetics in LiF using ion luminescence technique

Abeeha Batool, Samson O. Aisida, Javed Hussain, Shehla Honey, Mahmoud Izerrouken, Ayub Faridi, Ishaq Ahmad, Ting kai Zhao

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The present work reports the in-situ ion beam induced luminescence measurements using 2 MeV proton excitation of LiF single crystal with the aim of obtaining a further insight on F-type centers kinetics and its correlation with the self-trapped exciton (STE). It is found that the STE luminescence intensity decreases from the beginning of irradiation. While the dose-dependent evolution of F3 + and F2 centers reveals three kinetic stages: (i) linear increase from the beginning of irradiation up to 10.1 MGy, followed by (ii) monotonic decrease to 18.1 MGy, and (iii) steady state from 18.1 to 26.2 MGy where the luminescence intensity remains constant. The STE luminescence completely extinguished at high dose; 18.1 MGy in our case. Whereas, the F3 + and F2 luminescence persist and remain constant above 18.1 MGy. The latter behavior revealed in the present study can be useful for LiF application in radiation dosimetry and an imaging detector.

Original languageEnglish
Pages (from-to)52-55
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume466
DOIs
StatePublished - 1 Mar 2020

Keywords

  • Color centers
  • Ion beam induced luminescence
  • LiF crystal
  • Luminescence
  • Proton beam

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