Bibliographic Details
| Title: |
Double-resonance studies of electronically autoionizing states of molecular nitrogen. |
| Authors: |
Sen, Ananya1 (AUTHOR), Pratt, S. T.1 (AUTHOR) stpratt@anl.gov |
| Source: |
Molecular Physics. Nov2019, Vol. 117 Issue 21, p2930-2940. 11p. |
| Subjects: |
Rydberg states, Photoelectrons, Absorption spectra, Nitrogen |
| Geographic Terms: |
Canada |
| Abstract: |
Double-resonance excitation of molecular nitrogen, N2, via selected rotational levels of the , v′ = 0 state has been used to probe the first two bands in the new Ogawa series [M. Ogawa, Can. J. Phys. 42, 1087 (1964)], which lie above the first ionisation threshold of the molecule. These bands are rotationally unresolved in room-temperature and jet-cooled absorption spectra, but the double-resonance technique allows a rotational analysis and first confirmation of the assignment as transitions to n = 4 members of the (A2Πu)ndπ, v Rydberg series. In principle, the probe transition from the , v = 0 level to these Rydberg states corresponds to a two-electron transition, and this aspect of the results is explored. Finally, velocity map imaging allows a determination of the photoelectron branching fractions and angular distributions, providing insight into the electronic autoionisation dynamics. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
