Proton-induced fluorescence and long lasting emission of Sr 4Al14O25:Eu2+,Dy3+

K. Toh, K. Sakasai, T. Nakamura, K. Soyama, Shinji Nagata, B. Tsuchiya, T. Shikama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Fluorescence and long lasting emission properties of Sr4Al 14O25:Eu2+,Dy3+ were examined under proton irradiation by varying incident energy. The fluorescence spectra have three strong peaks at 400, 480, and 570 nm. The first two peaks are attributed to the luminescence of Eu2+ and exhibit the long lasting property. The peak at 570 nm is attributed to the luminescence of Dy3+; it exhibits no luminescence after the irradiation has been stopped. The fluorescence intensity ratio of Eu2+/Dy3+ exhibits incident energy dependence, and its value increases with an increase in the proton energy. Radiation damages also exhibits incident energy dependence. And, the radiation damages show activator dependence, and Eu is more sensitive to incident particles than Dy is. Long-lasting emission is observed after the cessation of irradiation, and the decay time of the long-lasting emission is different for different irradiation fluence.

Original languageEnglish
Title of host publication2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
Pages1427-1430
Number of pages4
DOIs
Publication statusPublished - 2009 Dec 1
Event2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 - Orlando, FL, United States
Duration: 2009 Oct 252009 Oct 31

Publication series

NameIEEE Nuclear Science Symposium Conference Record
ISSN (Print)1095-7863

Other

Other2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009
CountryUnited States
CityOrlando, FL
Period09/10/2509/10/31

ASJC Scopus subject areas

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

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  • Cite this

    Toh, K., Sakasai, K., Nakamura, T., Soyama, K., Nagata, S., Tsuchiya, B., & Shikama, T. (2009). Proton-induced fluorescence and long lasting emission of Sr 4Al14O25:Eu2+,Dy3+. In 2009 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2009 (pp. 1427-1430). [5402318] (IEEE Nuclear Science Symposium Conference Record). https://doi.org/10.1109/NSSMIC.2009.5402318