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Title: Adaptive strong-field control of vibrational population in NO2+

Abstract

An adaptive closed-loop system employing coincidence time-of-flight feedback is used to determine the optimal pulse shapes for manipulating the branching ratio of NO dications following double ionization by an intense laser pulse. Selection between the long-lived NO2+ and the dissociative N+ + O+ final states requires control of the vibrational population distribution in the transient NO2+. The ability to both suppress and enhance NO2+ relative to N+ + O+ is observed, with the effectiveness of shaped pulses surpassing near Fourier transform-limited pulses by about an order of magnitude in each direction, depending on the pulse energy. The control is subsequently investigated using velocity map imaging, identifying plausible dissociation pathways leading to N+ + O+. Combining the information about the N+ + O+ dissociation with a well-defined control objective supports the conclusion that the primary control mechanism involves selectively populating long-lived NO2+ vibrational states.

Authors:
 [1]; ORCiD logo [2]; ORCiD logo [3];  [1];  [1]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [1]
  1. Augustana College, Sioux Falls, SD (United States)
  2. Augustana College, Sioux Falls, SD (United States); Kansas State Univ., Manhattan, KS (United States)
  3. Kansas State Univ., Manhattan, KS (United States)
Publication Date:
Research Org.:
Kansas State Univ., Manhattan, KS (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1610039
Alternate Identifier(s):
OSTI ID: 1567725
Grant/Contract Number:  
FG02-86ER13491
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Chemical Physics
Additional Journal Information:
Journal Volume: 151; Journal Issue: 12; Journal ID: ISSN 0021-9606
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Chemistry; Physics; Femtochemistry; Velocity map imaging; Potential energy surfaces; Vibrational states; Molecular dynamics; Coherent control; Ultrafast lasers

Citation Formats

Voznyuk, O., Jochim, Bethany, Zohrabi, M., Broin, Adam, Averin, R., Carnes, K. D., Ben-Itzhak, I., and Wells, E. Adaptive strong-field control of vibrational population in NO2+. United States: N. p., 2019. Web. doi:10.1063/1.5115504.
Voznyuk, O., Jochim, Bethany, Zohrabi, M., Broin, Adam, Averin, R., Carnes, K. D., Ben-Itzhak, I., & Wells, E. Adaptive strong-field control of vibrational population in NO2+. United States. https://doi.org/10.1063/1.5115504
Voznyuk, O., Jochim, Bethany, Zohrabi, M., Broin, Adam, Averin, R., Carnes, K. D., Ben-Itzhak, I., and Wells, E. Sat . "Adaptive strong-field control of vibrational population in NO2+". United States. https://doi.org/10.1063/1.5115504. https://www.osti.gov/servlets/purl/1610039.
@article{osti_1610039,
title = {Adaptive strong-field control of vibrational population in NO2+},
author = {Voznyuk, O. and Jochim, Bethany and Zohrabi, M. and Broin, Adam and Averin, R. and Carnes, K. D. and Ben-Itzhak, I. and Wells, E.},
abstractNote = {An adaptive closed-loop system employing coincidence time-of-flight feedback is used to determine the optimal pulse shapes for manipulating the branching ratio of NO dications following double ionization by an intense laser pulse. Selection between the long-lived NO2+ and the dissociative N+ + O+ final states requires control of the vibrational population distribution in the transient NO2+. The ability to both suppress and enhance NO2+ relative to N+ + O+ is observed, with the effectiveness of shaped pulses surpassing near Fourier transform-limited pulses by about an order of magnitude in each direction, depending on the pulse energy. The control is subsequently investigated using velocity map imaging, identifying plausible dissociation pathways leading to N+ + O+. Combining the information about the N+ + O+ dissociation with a well-defined control objective supports the conclusion that the primary control mechanism involves selectively populating long-lived NO2+ vibrational states.},
doi = {10.1063/1.5115504},
journal = {Journal of Chemical Physics},
number = 12,
volume = 151,
place = {United States},
year = {Sat Sep 28 00:00:00 EDT 2019},
month = {Sat Sep 28 00:00:00 EDT 2019}
}

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