The generalized oscillator strengths (GOSs) of the valence-shell excitations of CH₃Cl have been determined at an incident electron energy of 1500eV and an energy resolution of about 70 meV. The momentum transfer dependence behaviors of the GOSs of the valence-shell excitations have been carefully analyzed, and the A band shows a strong dipole-forbidden characteristic. By extrapolating the GOSs to the limit of a zero squared momentum transfer, the optical oscillator strengths have been obtained, which provide an independent cross-check for the previous experimental and theoretical results. The BE-scaled integral cross sections (where B is the binding energy and E is the excitation energy) of the valence-shell excitations of CH₃Cl have been derived systematically from the threshold to 5000eV with the aid of a BE-scaling method. The results provide the fundamental spectroscopic data of CH₃Cl and have important applications in photochemical modeling for atmospheric physics.

CH ₃ Cl的价壳层激发的广义振子强度 (GOS)已在 1500eV 的入射电子能量和约 70 meV 的能量分辨率下确定。已经仔细分析了价壳激发的GOS的动量转移依赖性行为，并且A带显示出强烈的偶极子禁止特性。通过将 GOS 外推到零平方动量传递的极限，已经获得了光学振荡器强度，这为之前的实验和理论结果提供了独立的交叉检查。CH ₃价壳激发的BE 标度积分截面（其中B是结合能，E是激发能）借助 BE 缩放方法，已从阈值系统地推导出 Cl 到 5000eV。结果提供了 CH ₃ Cl的基本光谱数据，并且在大气物理光化学建模中具有重要应用。