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Title: Optical properties of Pr-doped BaY{sub 2}F{sub 8}

Crystalline samples of Pr-doped BaY{sub 2}F{sub 8} (BaYF) were prepared by zone melting technique. The pure phase obtained was identified by X-ray diffraction measurement. Optical absorption result was evaluated and it showed that the formation of the absorption bands can be connected to color centers generated by radiation in the matrix. Radioluminescence emission measurements after excitation by X-ray showed that the material exhibited components responsible for long lasting phosphorescence. Short decay times were also evaluated, the measurements showed a fast component around 70 ns associated to the 4f{sup 1}5d{sup 1} → 4f{sup 2} transition of the Pr{sup 3+} ion. The Thermoluminescence (TL) results indicate the presence of two trapping centers.
Authors:
; ;  [1] ;  [2] ;  [3]
  1. Physics Department, Federal University of Sergipe, 49100-000 São Cristovão, SE (Brazil)
  2. Physics Department, Federal University of Sergipe, 49500-000 Itabaiana, SE (Brazil)
  3. IPEN-CNEN/SP, CEP 11049, 05422-970 São Paulo, SP (Brazil)
Publication Date:
OSTI Identifier:
22314545
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 116; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION; COLOR CENTERS; DOPED MATERIALS; OPTICAL PROPERTIES; PHOSPHORESCENCE; PRASEODYMIUM IONS; RADIOLUMINESCENCE; THERMOLUMINESCENCE; X RADIATION; X-RAY DIFFRACTION; ZONE MELTING