Dynamic modification of the fragmentation of CO{sup q+} excited states generated with high-order harmonics
Abstract
The dynamic process of fragmentation of CO{sup q+} excited states is investigated using a pump-probe approach. EUV radiation (32-48 eV) generated by high-order harmonics was used to ionize and excite CO molecules and a time-delayed infrared (IR) pulse (800 nm) was used to influence the evolution of the dissociating multichannel wave packet. Two groups of states, separable experimentally by their kinetic-energy release (KER), are populated by the EUV and lead to C{sup +}-O{sup +} fragmentation: direct double ionization of the neutral molecule and fragmentation of the cation leading to C{sup +}-O*, followed by autoionization of O*. The IR pulse was found to modify the KER of the latter group in a delay-dependent way which is explained with a model calculation.
- Authors:
-
- J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas, 66506 (United States)
- Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- Physics Department, American University of Sharjah, Sharjah (United Arab Emirates)
- Max-Planck Institute of Quantum Optics, Hans-Kopfermann-Strasse 1, D-85748, Garching (Germany)
- Publication Date:
- OSTI Identifier:
- 21450802
- Resource Type:
- Journal Article
- Journal Name:
- Physical Review. A
- Additional Journal Information:
- Journal Volume: 82; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevA.82.043410; (c) 2010 The American Physical Society; Journal ID: ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS; AUTOIONIZATION; CARBON IONS; CARBON MONOXIDE; CATIONS; DISSOCIATION; EV RANGE; EXCITED STATES; HARMONICS; INFRARED RADIATION; KINETIC ENERGY; LASER RADIATION; MOLECULES; OXYGEN IONS; PULSES; TIME DELAY; WAVE PACKETS; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; CHARGED PARTICLES; ELECTROMAGNETIC RADIATION; ENERGY; ENERGY LEVELS; ENERGY RANGE; IONIZATION; IONS; OSCILLATIONS; OXIDES; OXYGEN COMPOUNDS; RADIATIONS
Citation Formats
Cao, W, De, S, Singh, K P, Chen, S, Laurent, G, Ray, D, Ben-Itzhak, I, Cocke, C L, Schoeffler, M S, Belkacem, A, Osipov, T, Rescigno, T, Alnaser, A S, Bocharova, I A, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Zherebtsov, S, Kling, M F, Max-Planck Institute of Quantum Optics, Hans-Kopfermann-Strasse 1, D-85748, Garching, Litvinyuk, I V, and Centre for Quantum Dynamics, Griffith University, Nathan, Queensland 4111. Dynamic modification of the fragmentation of CO{sup q+} excited states generated with high-order harmonics. United States: N. p., 2010.
Web. doi:10.1103/PHYSREVA.82.043410.
Cao, W, De, S, Singh, K P, Chen, S, Laurent, G, Ray, D, Ben-Itzhak, I, Cocke, C L, Schoeffler, M S, Belkacem, A, Osipov, T, Rescigno, T, Alnaser, A S, Bocharova, I A, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Zherebtsov, S, Kling, M F, Max-Planck Institute of Quantum Optics, Hans-Kopfermann-Strasse 1, D-85748, Garching, Litvinyuk, I V, & Centre for Quantum Dynamics, Griffith University, Nathan, Queensland 4111. Dynamic modification of the fragmentation of CO{sup q+} excited states generated with high-order harmonics. United States. https://doi.org/10.1103/PHYSREVA.82.043410
Cao, W, De, S, Singh, K P, Chen, S, Laurent, G, Ray, D, Ben-Itzhak, I, Cocke, C L, Schoeffler, M S, Belkacem, A, Osipov, T, Rescigno, T, Alnaser, A S, Bocharova, I A, Lawrence Berkeley National Laboratory, Berkeley, California 94720, Zherebtsov, S, Kling, M F, Max-Planck Institute of Quantum Optics, Hans-Kopfermann-Strasse 1, D-85748, Garching, Litvinyuk, I V, and Centre for Quantum Dynamics, Griffith University, Nathan, Queensland 4111. 2010.
"Dynamic modification of the fragmentation of CO{sup q+} excited states generated with high-order harmonics". United States. https://doi.org/10.1103/PHYSREVA.82.043410.
@article{osti_21450802,
title = {Dynamic modification of the fragmentation of CO{sup q+} excited states generated with high-order harmonics},
author = {Cao, W and De, S and Singh, K P and Chen, S and Laurent, G and Ray, D and Ben-Itzhak, I and Cocke, C L and Schoeffler, M S and Belkacem, A and Osipov, T and Rescigno, T and Alnaser, A S and Bocharova, I A and Lawrence Berkeley National Laboratory, Berkeley, California 94720 and Zherebtsov, S and Kling, M F and Max-Planck Institute of Quantum Optics, Hans-Kopfermann-Strasse 1, D-85748, Garching and Litvinyuk, I V and Centre for Quantum Dynamics, Griffith University, Nathan, Queensland 4111},
abstractNote = {The dynamic process of fragmentation of CO{sup q+} excited states is investigated using a pump-probe approach. EUV radiation (32-48 eV) generated by high-order harmonics was used to ionize and excite CO molecules and a time-delayed infrared (IR) pulse (800 nm) was used to influence the evolution of the dissociating multichannel wave packet. Two groups of states, separable experimentally by their kinetic-energy release (KER), are populated by the EUV and lead to C{sup +}-O{sup +} fragmentation: direct double ionization of the neutral molecule and fragmentation of the cation leading to C{sup +}-O*, followed by autoionization of O*. The IR pulse was found to modify the KER of the latter group in a delay-dependent way which is explained with a model calculation.},
doi = {10.1103/PHYSREVA.82.043410},
url = {https://www.osti.gov/biblio/21450802},
journal = {Physical Review. A},
issn = {1050-2947},
number = 4,
volume = 82,
place = {United States},
year = {Fri Oct 15 00:00:00 EDT 2010},
month = {Fri Oct 15 00:00:00 EDT 2010}
}