Determining a vibrational distribution with a broadband optical source. Issue 35 (27th August 2020)

• Record Type: Journal Article
• Authors: Courageux, T.; Cournol, A.; Comparat, D.; Viaris de Lesegno, B.; Lignier, H.
• Is Part Of: Physical chemistry chemical physics. Volume 22:Issue 35(2020)
• Page Start: 19864
• Page End: 19869
• Publication Date: 2020-08-27
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/d0cp03583a
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : This work presents an experimental protocol conceived to determine the vibrational distribution of barium monofluoride molecules seeded in a supersonic beam of argon. Abstract : This work presents an experimental protocol conceived to determine the vibrational distribution of barium monofluoride molecules seeded in a supersonic beam of argon. Here, as in many cases, the detection signal is related to the number of molecules by an efficiency involving several parameters that may be difficult to determine properly. In particular, this efficiency depends on the vibrational level of the detected molecules. Our approach avoids these complications by comparing different detection signals generated by different vibrational excitations. Such an excitation is made possible by the use of a broadband optical source that depletes a specific vibrational level whose population is redistributed in the other levels.