Rotationally resolved photoelectron spectroscopy of hot N_2 formed in the photofragmentation of N_2O
Abstract
The photoionizationdynamics of rotationally hot molecular nitrogen are studied employing resonance enhanced multiphoton ionization in combination with photoelectron spectroscopy.Photodissociation of N_2O at ∼203 nm results in highly rotationally excited N2 fragments in X ^1∑^+_g (N″,v″=0,1) states and O atoms in the excited ^1D_2 state. Photoelectron detection of the rotationally hot N_2 states is performed by a two-photon excitation to the lowest a″ ^1∑^+_g Rydberg state followed by one-photon ionization. The large number of observed rotational levels, from N′=49 up to N′=94, results in improved rotational parameters for a″ ^1∑^+_g (v′=0). In addition, experimental and theoretical rotationally resolved photoelectron spectra of the a″ ^1∑^+_g (v′=0,1;N′) state are presented. In these spectra only ΔN = N^+ − N′ = even transitions are observed, with a dominant ΔN=0 peak and rather weak ΔN = ±2 peaks. The one-photon ionization is dominated by ejection of electrons in p and f partial waves. The agreement between experimental and calculated spectra is excellent.
Additional Information
© 2001 American Institute of Physics. (Received 13 February 2001; accepted 14 March 2001) A.M.R. acknowledges the Holland Research School of Molecular Chemistry for a Ph.D. fellowship. The authors thank Ing. D. Bebelaar for technical support. Work at the California Institute of Technology was supported by a grant from the National Science Foundation (U.S.).Attached Files
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Additional details
- Alternative title
- Rotationally resolved photoelectron spectroscopy of hot N2 formed in the photofragmentation of N2O
- Eprint ID
- 61608
- Resolver ID
- CaltechAUTHORS:20151027-154129602
- Holland Research School of Molecular Chemistry
- NSF
- Created
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2015-10-28Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field