Spectroscopy of molecules seeded in cold jet : study of conformers

Department of Physical Chemistry, Indian Association for the Cultivation of Science, Jadavpur,

Kolkata-700 032, India

E-mail: pcmc@mahendra.iacs.res.in   Fax : 9 I -33-4 732805

Manuscript received 2 April 2001

Conformers of two molecules, sym-hexahydropyrene (s-HHP) and tetrahydroisoquinoline (THIQ) have been investigated in seeded cold molecular beams by laser spectroscopic techniques. Observed fluorescence excitation, dispened emission and two-colour hole-burning spectra are consistent wrth the geometries obtained through semr-ernpirical calculations.