双原子自由基的$Λ$ -双峰谱及其与基本常数的关系
$Λ$-doublet spectra of diatomic radicals and their dependence on fundamental constants
摘要：
轻双原子自由基的$Λ$ -双峰光谱对精细结构常数α和电子-质子质量比β的可能变化具有很高的灵敏度。对于分子OH和CH的灵敏度进一步增强，因为J依赖的去耦的电子自旋从分子轴，其中J是分子的总角动量。当$Λ$ -分裂在两种极限耦合情形a和b中具有不同的符号时，自旋的退耦导致分裂符号的改变和无量纲灵敏度系数的增长。例如，OH分子的$Π_{1/2}$态的$Λ$ -双线J=9/2的灵敏度系数为$10^3$的量级.
英文摘要：
$Λ$-doublet spectra of light diatomic radicals have high sensitivity to the possible variations of the fine structure constant alpha and electron-to-proton mass ratio beta. For molecules OH and CH sensitivity is further enhanced because of the J-dependent decoupling of the electron spin from the molecular axis, where J is total angular momentum of the molecule. When $Λ$-splitting has different signs in two limiting coupling cases a and b, decoupling of the spin leads to the change of sign of the splitting and to the growth of the dimensionless sensitivity coefficients. For example, sensitivity coefficients for the $Λ$-doublet lines J=9/2 of the $Π_{1/2}$ state of OH molecule are on the order of $10^3$.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
