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VUV excitation of a vibrational wavepacket in D2 measured through strong-field dissociative ionization

VUV excitation of a vibrational wavepacket in D2 measured through strong-field dissociative ionization
VUV excitation of a vibrational wavepacket in D2 measured through strong-field dissociative ionization
Femtosecond vacuum ultraviolet pulses from a monochromated high harmonic generation source excite vibrational wavepackets in the ${B}^{1}{{\rm{\Sigma }}}_{{\rm{g}}}^{+}$ state of D2. The wavepacket motion is measured through strong field ionization into bound and dissociative ion states yielding ${{\rm{D}}}_{2}^{+}$ and D+ products. The time dependence of the ${{\rm{D}}}_{2}^{+}$ and D+ ion signals provides a sensitive fingerprint of the quantum nuclear wavepacket, due to the different ionization rates for the two channels. The experiments are modelled with excitation and ionization processes included explicitly, with the results of the model showing a very good agreement with the experimental observations. The experiment demonstrates the level of detail attainable when studying ultrafast quantum nuclear dynamics using high harmonic sources.
1-9
Bainbridge, A.R
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Harrington, J.
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Kirrander, A.
5a9f4e74-798c-4fc9-a828-58b55e19aa01
Cacho, C.
3b41ac4c-1dab-466f-8542-15aded608555
Springate, E.
740a0cbc-7be5-4c9c-ac28-4d0370b10e2f
Bryan, W.A.
b5a4bdc9-6e0f-4e17-981b-357c28a79eab
Minns, R.
85280db4-c5a6-4a4c-82fe-75693c6a6045
Bainbridge, A.R
0ed6bf3c-827d-44a5-8147-ab68936ee885
Harrington, J.
e05ff1a1-1088-457b-be04-5070276a1622
Kirrander, A.
5a9f4e74-798c-4fc9-a828-58b55e19aa01
Cacho, C.
3b41ac4c-1dab-466f-8542-15aded608555
Springate, E.
740a0cbc-7be5-4c9c-ac28-4d0370b10e2f
Bryan, W.A.
b5a4bdc9-6e0f-4e17-981b-357c28a79eab
Minns, R.
85280db4-c5a6-4a4c-82fe-75693c6a6045

Bainbridge, A.R, Harrington, J., Kirrander, A., Cacho, C., Springate, E., Bryan, W.A. and Minns, R. (2015) VUV excitation of a vibrational wavepacket in D2 measured through strong-field dissociative ionization. New Journal of Physics, 1-9. (doi:10.1088/1367-2630/17/10/103013).

Record type: Article

Abstract

Femtosecond vacuum ultraviolet pulses from a monochromated high harmonic generation source excite vibrational wavepackets in the ${B}^{1}{{\rm{\Sigma }}}_{{\rm{g}}}^{+}$ state of D2. The wavepacket motion is measured through strong field ionization into bound and dissociative ion states yielding ${{\rm{D}}}_{2}^{+}$ and D+ products. The time dependence of the ${{\rm{D}}}_{2}^{+}$ and D+ ion signals provides a sensitive fingerprint of the quantum nuclear wavepacket, due to the different ionization rates for the two channels. The experiments are modelled with excitation and ionization processes included explicitly, with the results of the model showing a very good agreement with the experimental observations. The experiment demonstrates the level of detail attainable when studying ultrafast quantum nuclear dynamics using high harmonic sources.

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Accepted/In Press date: 21 October 2015
Published date: 2015
Organisations: Computational Systems Chemistry

Identifiers

Local EPrints ID: 382043
URI: https://eprints.soton.ac.uk/id/eprint/382043
PURE UUID: 4e677924-415b-4cd7-b741-7c70b1d8cdd5
ORCID for R. Minns: ORCID iD orcid.org/0000-0001-6775-2977

Catalogue record

Date deposited: 23 Oct 2015 08:56
Last modified: 20 Jul 2019 00:43

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