Study of the correlation of scintillation decay and emission wavelength

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• 作者：Takayuki Yanagida ; Yutaka Fujimoto ; Akihiro Yamaji ; Noriaki Kawaguchi ; Kei Kamada ; Daisuke Totsuka ; Kentaro Fukuda ; Kohei Yamanoi ; Ryosuke Nishi ; Shunsuke Kurosawa ; Toshihiko Shimizu ; Nobuhiko Sarukura
• 关键词：Scintillation detector ; Scintillator ; X-ray ; 5d-4f transition ; Streak camera
• 刊名：Radiation Measurements
• 出版年：2013
• 出版时间：August, 2013
• 年：2013
• 卷：55
• 期：Complete
• 页码：99-102
• 全文大小：1045 K

文摘

In photoluminescence which directly excites the emission center of phosphor material is known to have a correlation between the emission wavelength and the decay time based on quantum mechanics. In scintillation phenomenon, host lattice of the material is first excited by ionizing radiation and then the excitation energy is transferred to emission centers. For the first time, we investigated the correlation between the scintillation decay and the emission wavelength by using pulse X-ray equipped streak camera system which could observe time and wavelength resolved scintillation phenomenon. Investigated materials were Ce³⁺, Pr³⁺ and Nd³⁺ doped oxides and fluorides which all showed 5d-4f transition based emission. As a result, we obtained the relation that ¦Ó (scintillation decay time) was proportional to the ¦Ë^2.15 (emission wavelength).