skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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:
; ; ; ; ; ; ;  [1]; ; ; ;  [2];  [3];  [1];  [4];  [1];  [1]
  1. J. R. Macdonald Laboratory, Physics Department, Kansas State University, Manhattan, Kansas, 66506 (United States)
  2. Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
  3. Physics Department, American University of Sharjah, Sharjah (United Arab Emirates)
  4. 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}
}