[ E_v = \hbar \omega_e (v + \tfrac12) - \hbar \omega_e \chi_e (v + \tfrac12)^2 + \dots ]
Similar curriculum content is often provided in M.Sc. Physics course modules from institutions like Uttarakhand Open University Bharathidasan University numerical problems related to this textbook? Atomic & Molecular Spectra: Laser - Amazon.in Atomic And Molecular Spectra Laser By Rajkumar Pdf 56