Far Wing Asymmetry of Rotational Raman Lines in Hydrogen | Zendy

Magnus Gustafsson | Zendy

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Far Wing Asymmetry of Rotational Raman Lines in Hydrogen

Author(s) -

Magnus Gustafsson

Publication year - 2009

Publication title -

international journal of spectroscopy

Language(s) - English

Resource type - Journals

eISSN - 1687-9457

pISSN - 1687-9449

DOI - 10.1155/2010/705896

Subject(s) - asymmetry , line (geometry) , raman spectroscopy , wing , spectral line , rotational transition , atomic physics , interference (communication) , hydrogen , molecular physics , physics , materials science , optics , nuclear magnetic resonance , geometry , mathematics , classical mechanics , quantum mechanics , angular momentum , telecommunications , channel (broadcasting) , computer science , thermodynamics

Depolarized Raman spectra of compressed hydrogen gas have been computed rigorously previouslyfor 36 K and 50 K (Gustafsson et al. (2009)). The far wings of therotational lines show asymmetry that goes beyond that expected from the theory for intracollisionalinterference and Fano line shapes. Here we analyze the 0(0) line for pure hydrogen at 36 K in detail. The added asymmetry stems partly from a shape resonance which adds significant intensity to the higher frequency side of the line profile. The influence of the threshold energy for the rotational transition accounts for the remainder

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