Fermi function

Also, the ratio of the transition probability excited by double photon to that excited by a single photon is calculated and the numerical solution is found within the range of Fermi level and work function of various common metals.

计算了双光子激发与单光子激发跃迁几率之比，并在一般金属Fermi能级和功函数范围内求得了数值解。

Considering that the wave function of Fermi system is anti-symmetry when two electrons are exchanged, the spatial wave function and the spin wave function should be exchange symmetry or exchange anti-symmetry.

同时考虑到全同费米子体系的波函数具有交换反对称性，电子的空间波函数和自旋波函数应具有交换对称性或交换反对称性。

The method can be applied to the functions with two free coefficients, such as the Fermi function, so that it can be used to recover the graded index profiles with wide variation range.

该方法把统计优化手段导入循环迭代法，可适用于费米函数这一类曲线变化范围大、且有多个自变量的函数。

The researches show that the Fermi function can be used to describe the refractive-index profiles of the ion-exchanged planar waveguides.

研究表明，采用Fermi函数可以很好地描述离子交换平面光波导折射率分布情况。

The probability functions of carriers occupying the impurity level are calculated by applying the Fermi-Dirac distribution function and the thermal-equilibrium theory of the impurity ionization, the result accord with that obtained by applying the conventional thermodynamic and statistical theory and the method of computing the chemical potential.

利用费米分布函数和杂质电离的热平衡理论计算了载流子在杂质能级上的占据概率，其结果与传统的热力学统计理论及计算化学势方法得到的结果完全一致。