Luminescence characteristics of Sr4Al14O25:Eu,Dy under proton irradiation

K. Toh; S. Nagata; B. Tsuchiya; T. Shikama

doi:10.1016/j.nimb.2006.03.054

Luminescence characteristics of Sr₄Al₁₄O₂₅:Eu,Dy under proton irradiation

K. Toh, S. Nagata, B. Tsuchiya, T. Shikama

Materials Design Division

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Fluorescence and long lasting emission properties of Sr₄Al₁₄O₂₅:Eu, Dy 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. Therefore, Sr₄Al₁₄O₂₅:Eu, Dy exhibits a potential of being employed to identify the incident proton energy. Long lasting emission has some decay time components and the longest one is unaltered by proton energy.

Original language	English
Pages (from-to)	209-212
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	249
Issue number	1-2 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.nimb.2006.03.054
Publication status	Published - 2006 Aug 1

Keywords

Energy dependence
Long lasting phosphor (LLP)
Luminescence
Proton
SrAlO:Eu,Dy

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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title = "Luminescence characteristics of Sr4Al14O25:Eu,Dy under proton irradiation",

abstract = "Fluorescence and long lasting emission properties of Sr4Al14O25:Eu, Dy 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. Therefore, Sr4Al14O25:Eu, Dy exhibits a potential of being employed to identify the incident proton energy. Long lasting emission has some decay time components and the longest one is unaltered by proton energy.",

keywords = "Energy dependence, Long lasting phosphor (LLP), Luminescence, Proton, SrAlO:Eu,Dy",

author = "K. Toh and S. Nagata and B. Tsuchiya and T. Shikama",

year = "2006",

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T1 - Luminescence characteristics of Sr4Al14O25:Eu,Dy under proton irradiation

AU - Toh, K.

AU - Nagata, S.

AU - Tsuchiya, B.

AU - Shikama, T.

PY - 2006/8/1

Y1 - 2006/8/1

N2 - Fluorescence and long lasting emission properties of Sr4Al14O25:Eu, Dy 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. Therefore, Sr4Al14O25:Eu, Dy exhibits a potential of being employed to identify the incident proton energy. Long lasting emission has some decay time components and the longest one is unaltered by proton energy.

AB - Fluorescence and long lasting emission properties of Sr4Al14O25:Eu, Dy 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. Therefore, Sr4Al14O25:Eu, Dy exhibits a potential of being employed to identify the incident proton energy. Long lasting emission has some decay time components and the longest one is unaltered by proton energy.

KW - Energy dependence

KW - Long lasting phosphor (LLP)

KW - Luminescence

KW - Proton

KW - SrAlO:Eu,Dy

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