radiation lifetime

The resonance radiation trapping in alkaline-earth metal atomic lasers were investigated according to Holstein's theory. The threshold temperature, ground-state density and resonant level effective lifetime of the resonance radiation trapping were calculated for Ca, Sr, and Ba atomic vapor lasers with different tube radii.

根据Holstein理论研究了碱土金属原子激光中的共振辐射俘获效应，分别计算了Ca，Sr和Ba蒸气激光在不同半径时产生共振辐射俘获效应的阈值温度、基态粒子数密度和共振能级的有效寿命。

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On the base of fluorescence quantum yield and lifetime measurement, the rate constants of radiation decay and non radiation decay of this compound were calculated.

在测定其荧光寿命及荧光量子产率基础上计算出它们的辐射及非辐射衰变速度常数。

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Strong correlations were found between current eyesight and volunteers ’ lifetime exposure to sunlight, above all UVB radiation ( which is responsible for burning).

研究发现，志愿者目前的视力与其暴露在阳光下（尤其是导致灼伤的中波紫外线辐射）的时长有很强的相关性。

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