论文标题
霓虹灯的极化性和磁化率的理论测定
Theoretical determination of polarizability and magnetic susceptibility of neon
论文作者
论文摘要
我们报告了霓虹原子偶极极化性的理论确定，包括其频率依赖性。考虑了相对论，量子电动力学，有限的核量和有限核大小效应的校正。我们获得静态极化性的$α_0= 2.66080（36）$，以及$α_2= 2.850（7）$和$α_4= 4.932（14）$的前两个极化性分散系数（cauchy poments）;所有值均以原子单位（A.U.）为单位。在静态极化性的情况下，我们的结果与最佳的实验确定相符[C. Gaiser和B. Fellmuth，物理。莱特牧师。 120，123203（2018）]，但我们的估计不确定性明显更大。对于分散系数，与已发表的理论和实验数据相比，这项工作中获得的结果似乎是迄今为止最准确的。我们还计算了需要获得气态霓虹灯的折射率所需的霓虹灯原子的静态磁敏感性。我们的结果是，$χ_0= -8.484（19）\ CDOT 10^{ - 5} $ A.U.，绝对值比推荐的实验值大约9％[CRC化学和物理学手册，CRC Press，2019年，2019年，p。 4-145]。
We report theoretical determination of the dipole polarizability of the neon atom, including its frequency dependence. Corrections for the relativistic, quantum electrodynamics, finite nuclear mass, and finite nuclear size effects are taken into account. We obtain the value $α_0=2.66080(36)$ for the static polarizability, and $α_2=2.850(7)$ and $α_4=4.932(14)$ for the first two polarizability dispersion coefficients (Cauchy moments); all values are in atomic units (a.u.). In the case of static polarizability, our result agrees with the best experimental determination [C. Gaiser and B. Fellmuth, Phys. Rev. Lett. 120, 123203 (2018)], but our estimated uncertainty is significantly larger. For the dispersion coefficients, the results obtained in this work appear to be the most accurate to date overall compared to published theoretical and experimental data. We also calculated the static magnetic susceptibility of the neon atom, needed to obtain the refractive index of gaseous neon. Our result, $χ_0 = -8.484(19) \cdot 10^{-5}$ a.u., is about 9% larger in absolute value than the recommended experimental value [CRC Handbook of Chemistry and Physics, CRC Press, 2019, p. 4-145].
