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朱立刚

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[求助] the radiative lifetime的意思,暗示是一次指数衰减吗

具体意思:
The fluorescence lifetime at low concentration is close to the radiatiive lifetime;
however as the concentration increase, the lifetime decreases which indicates the presence of non-radiative energy transfer processes from excited to neighbouring unexcited Dy3+ ions.
在低浓度时荧光寿命跟辐射寿命很相近,然而,当浓度增加时,荧光寿命的降低表明了从激发态的镝离子向邻近的非激发态镝离子进行了非辐射能量传递。
我的问题是,辐射寿命(the radiatiive lifetime)是单指数衰减吗?
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