1) rotationnal population
旋转粒子数
3) rotational quantum number
旋转量子数
4) population inversion
反转粒子数
1.
In this paper we start from the rate equations describing a Q switched laser system with a saturable absorber and finally deduce the condition of this kind of Q switching which should be satisfied by the laser crystal population inversion.
本文从描述饱和吸收体调Ｑ的速率方程出发，推导实现有激发态吸收的饱和吸收体调Ｑ所需的反转粒子数理论上应满足的条件，并对其进行讨论与分析。
2.
The condition of this kind of Q-switching which should be satisfied by the laser crystal population inversion is deduced.
从描述饱和吸收体调Q的速率方程出发，推导出了实现有激发态吸收的饱和吸收体调Q所需的反转粒子数理论上应满足的条件，并对其进行了讨论与分析，与参考文献的相关叙述相符。
3.
The extraction efficiency and the distribution of population inversion in multi pass amplifier are calculated theoretically.
理论上计算了在多程放大过程中反转粒子数的利用效率、反转粒子数的分布等。
5) population inversion
粒子数反转
1.
Based on boltzmann distribution law,thermodynamic scale of temperature is discussed of three level laser working matter system in negative temperature state,realized population inversion.
从玻耳兹曼发布律出发，对处于负温度状态（即实现粒子数反转）的三能级激光工作物质系统的热力学温度进行了讨论，指出在负温度状态下，粒子系统的热力学温度仍可以大于零，证明了负温度状态并不等同于热力学温度Ｔ＜０的状态。
2.
94 μm, but only changes the relation between the population inversion of 4I 13/2 and 4I 15/2 levels and the concentration of Er 3+ ions.
６６μｍ波长激光粒子数反转，即Ｎ２（４Ｉ１３／２）＞Ｎ１（４Ｉ１５／２）与Ｅｒ３＋离子浓度的关系。
3.
The evolution properties of the field entropy and the population inversion in an interacting system of a coherent superposition state and a two-level atom are studied and compared with that of the coherent superposition state formed by the coherent state and vacuum state.
研究了压缩相干态和真空态构成的相干叠加态光场与二能级原子相互作用系统中场熵的演化特性及粒子数反转效应,并与相干态和真空态构成的相干叠加态光场的场熵特性及粒子数反转效应进行了比较。
6) population transfer
粒子数转移
1.
Several methods of population transfer and comparisons of them;
粒子数转移的几种方法及比较
补充资料：旋转
分子式：
CAS号：
性质：将图像(或分子)绕一定轴线转动一定角度后能使图像复原的一类对称动作。旋转据以进行的轴线称作旋转轴，使图像绕轴后复原的最小转角称作基转角α。设α=2π/n，显然，旋转角为α整数倍的角度均能使图像复原，不难论证，在2π角度范围内独立、不等同旋转对称动作的种数为n。
CAS号：
性质：将图像(或分子)绕一定轴线转动一定角度后能使图像复原的一类对称动作。旋转据以进行的轴线称作旋转轴，使图像绕轴后复原的最小转角称作基转角α。设α=2π/n，显然，旋转角为α整数倍的角度均能使图像复原，不难论证，在2π角度范围内独立、不等同旋转对称动作的种数为n。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条