title: Hyperfine Level Dependence of the Pressure Broadening of CH(3)I Rotational Transitions in the v(6) = 1 Vibrational State.
abstract: We studied the hyperfine components of the (J = 10-9, Kl = 9) rotational transition in the v(6) = 1 excited vibrational state of CH(3)I, using collinear infrared and mm-wave radiations. The Doppler-free double-resonance technique allowed an accurate determination of the collisional broadening parameters for all the hyperfine components. An evident dependence on the F quantum number was observed and this result is perfectly consistent with a theoretical model allowing calculations of collisional broadening and coupling for the hyperfine components. Copyright 2000 Academic Press.
authors.affiliation: Dipartimento di Fisica dell'Universita', Istituto Nazionale di Fisica della Materia, Piazza Torricelli 2, Pisa, 56126, Italy
authors.initials: S
authors.lastname: Belli
authors.initials: G
authors.lastname: Buffa
authors.lastname: Di Lieto A
authors.initials: P
authors.lastname: Minguzzi
authors.initials: O
authors.lastname: Tarrini
authors.initials: M
authors.lastname: Tonelli