Velocity map ion imaging of H atoms from the dissociation of HCO ( A ∼ 2 A ″ ) using Doppler-free multi-photon ionization
Velocity map ion imaging using Doppler-free 2+1 multi-photon ionization at λ = 243.1 nm has been applied to monitor the nascent H atoms from the predissociation of HCO ( A ∼ 2 A ″ ) in the (0, 0, 10 1) vibrational state. Employing two balanced, counterpropagating circularly (σ + and σ −) polarized p...
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Published in | Chemical physics letters Vol. 414; no. 4; pp. 473 - 478 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
14.10.2005
|
Online Access | Get full text |
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Summary: | Velocity map ion imaging using Doppler-free 2+1 multi-photon ionization at
λ
=
243.1
nm has been applied to monitor the nascent H atoms from the predissociation of HCO (
A
∼
2
A
″
) in the (0,
0,
10
1) vibrational state. Employing two balanced, counterpropagating circularly (σ
+ and σ
−) polarized probe beams, complete velocity map images were accumulated with every laser shot without having to scan the probe wavelength over the strongly Doppler-broadened line profile. The H–CO bond dissociation energy, CO internal energy distribution, and anisotropy parameter are presented and compared with literature data. |
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ISSN: | 0009-2614 1873-4448 |
DOI: | 10.1016/j.cplett.2005.08.115 |