CuKα-radiation (λ = 0.154 nm) induced emission-color change in Eu-doped KNaSO4
CuKα-radiation (λ = 0.154 nm) induced emission-color change in Eu-doped KNaSO4
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CuKα 辐射 (λ = 0.154 nm) 引起 Eu 掺杂 KNaSO4 的发射颜色变化
DOI:
10.1016/j.sna.2022.113494
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Yonezaki Yoshinori
中科院分区:
文献类型:
--
作者:
Ryohei Tsubata;Kazuhiro Gotoh;Tetsuya Inoue;Yasuyoshi Kurokawa;and Noritaka Usami;Yonezaki Yoshinori
This paper demonstrates CuKα-radiation-induced emission-color change of KNaSO4: Eu3+in prospect of application in simplified radiation dosimetry. KNaSO4:xEu3+(x= 0.002–0.008) was prepared by high-temperature solid-state reaction. The Eu-doped sulfate showed Eu3+and Eu2+-derived mixed-color emission under ultraviolet (UV) excitation light. Although the Eu2+emission from the as-made sample was very weak, it became dominant after exposure to CuKα radiation because of the reduction of Eu3+. Electron spin resonance spectroscopy revealed that the reduction process was caused by photoelectrons released from SO42-ions. Since both Eu3+and Eu2+ions were stable within KNaSO4, emission color regulated by CuKα exposure did not vary under UV/visible excitation light. However, the CuKα-induced Eu2+emission showed significant thermal attenuation at 50 °C and 150 °C. Observed two-step attenuation reflected Eu2+ions occupying two crystallographically different site.
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影响因子:
3.3
作者:
Chihiro Matsuda;Q. Dong
通讯作者:
Q. Dong
影响因子:
3.3
作者:
Y. Yonesaki;Chihiro Matsuda
通讯作者:
Chihiro Matsuda
DOI:
10.1021/j150551a028
发表时间:
1957
期刊:
The Journal of Physical Chemistry
影响因子:
--
作者:
L. E. Moore
通讯作者:
L. E. Moore
影响因子:
6.2
作者:
Yonezaki Yoshinori;Yanai Ryo
通讯作者:
Yanai Ryo
影响因子:
0.5
作者:
Yoshinori Yonezaki
通讯作者:
Yoshinori Yonezaki