Bibliographic Details
| Title: |
Velocity map ion imaging and velocity-resolved action spectroscopy of H atom photofragments via Doppler-free multiphoton ionization. |
| Authors: |
Epshtein, Michael1, Monsa, Yaakov1, Portnov, Alexander1, Bar, Ilana1 ibar@bgu.ac.il |
| Source: |
Chemical Physics Letters. Jun2017, Vol. 677, p1-6. 6p. |
| Subjects: |
Hydrogen atom, Imaging systems, Photochemistry, Multiphoton ionization, Doppler broadening, Methylamines, Spectrum analysis |
| Abstract: |
Hydrogen atom photofragments with high velocities in the laboratory frame lead to strong Doppler broadening of the (2 + 1) resonance-enhanced multiphoton ionization transition. Here, an alternative setup for Doppler-free ion imaging is demonstrated and explored for predissociation of methylamine and probing of H photofragments, at close wavelengths. This approach enables measurement of the entire velocity distributions in each laser pulse, enhances sensitivity and consequently provides acquisition of high quality H images and action spectra. These results shed light on dissociation dynamics and can be foreseen to be useful in revealing the dynamics in other molecular systems. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
