Vibration-Rotation spectroscopy of HCl

1. Abstract
? ????? Rotational-Vibration spectroscopy? ???? Infrared ??? ?? ???? HCl? ??? ??? ????. Infrared ??? ?? ??? ???? ??? ?????? ??? ??? ??. ? ??? ???? ??? ?? ?? ??? ??? ????? ??? ?? ? ??.

2. Introduction
(1) ?????(diatomic molecule)? ?????? ??? ?? ???? ?????(harmonic oscillator)? ??? ???? ? ??.
wave number()??? ?? ?????(fundamental vibration frequency)?, ??? ? ????? quantum number? ????.
(2) ?????(harmonic oscillator)? ??? ??? ???? ??? ? ?? ???? ???? ??? ?? ???? ?? ???. ? ?, ? ??? ??? ??? ???? ??? ???? ???? ????. ??? ?? ?? ?? ?? ?? ?? ??? ??? ????? ?? ?? ?? ??? ??? ??.
(3) Rotational-Vibrational spectroscopy? molecular spectroscopy? ? ??? gas phase ???? ??? ??? ??? Raman spectra ? ???? ??. ??? ??, ??, ?? ????? ?????, ? ??, ???, ????? ????. ? ??? ???? ???? ?? ?? ? ??? ?? ??? ??? ??? ?? ??? ??? ??? ????.
(4) Vibrational transition? selection rule?? ? ??? ??.
¢Ù Gross selection rule
??? ??? ???? ???? ????? ??? ??? ?? ? ??.
¢Ú Specific selection rule