Question

. Why is microwave spectroscopy particularly well suited to the study of molecules in the interstellar medium?

Answer 1

in an atmosphere that is essentially free of intermolecular interactions with other partners. In particular, the collisionless environment of a supersonic jet seems particularly well suited for such studies. Rotational spectroscopy is the only technique that, thanks to its inherently superior resolution, can distinguish unambiguously between different isomers, conformers, or isotopomers and provide accurate structural information directly comparable to the in vacuo theoretical predictions.The microwaves spectroscopy which is concerned with molecules in a gaseous state,and usually transition occurring in their rotational energy secondly paramagnetic resonance absorption which concerned with ions in a crystalline lattice the energy level of which can be affected by an external magnetic thirdly grouped together are experimental on ferromagnetic resonance measurements on free radicals and f centres and electron resonace in metal and semiconductor these all been studied with considerable success by microwave absorption techniques.