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Stewart G, Debrah D, Hoerner P, Lee SK, Schlegel HB, Li W. Carrier-Envelope Phase Controlling of Ion Momentum Distributions in Strong Field Double Ionization of Methyl Iodide. J Phys Chem A 2023; 127:870-875. [PMID: 36657163 DOI: 10.1021/acs.jpca.2c06754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In strong field ionization of methyl iodide initiated by elliptically polarized few-cycle pulses, a significant correlation was observed between the carrier-envelope phases (CEPs) of the laser and the preferred ejection direction of methyl cation arising from dissociative double ionization. This was attributed to the carrier-envelope phase dependent double ionization yields of methyl iodide. This observation provides a new way for monitoring the absolute CEPs of few-cycle pulses by observing the ion momentum distributions.
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Affiliation(s)
- Gabriel Stewart
- Department of Chemistry, Wayne State University, Detroit, Michigan48202, United States
| | - Duke Debrah
- Department of Chemistry, Wayne State University, Detroit, Michigan48202, United States
| | - Paul Hoerner
- Department of Chemistry, Wayne State University, Detroit, Michigan48202, United States
| | - Suk Kyoung Lee
- Department of Chemistry, Wayne State University, Detroit, Michigan48202, United States
| | - H Bernhard Schlegel
- Department of Chemistry, Wayne State University, Detroit, Michigan48202, United States
| | - Wen Li
- Department of Chemistry, Wayne State University, Detroit, Michigan48202, United States
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2
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Boeije Y, Olivucci M. From a one-mode to a multi-mode understanding of conical intersection mediated ultrafast organic photochemical reactions. Chem Soc Rev 2023; 52:2643-2687. [PMID: 36970950 DOI: 10.1039/d2cs00719c] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
This review discusses how ultrafast organic photochemical reactions are controlled by conical intersections, highlighting that decay to the ground-state at multiple points of the intersection space results in their multi-mode character.
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Affiliation(s)
- Yorrick Boeije
- Van 't Hoff Institute for Molecular Sciences (HIMS), University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Massimo Olivucci
- Chemistry Department, University of Siena, Via Aldo Moro n. 2, 53100 Siena, Italy
- Chemistry Department, Bowling Green State University, Overman Hall, Bowling Green, Ohio 43403, USA
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3
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Das S, Sharma P. Photochemistry of diethyl ether clusters at 1012 W/cm2: A mass spectrometry and charge density study. J Photochem Photobiol A Chem 2021. [DOI: 10.1016/j.jphotochem.2021.113407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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4
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Pandey G, Dey D, Tiwari AK. Controlling the Ultrafast Dynamics of HD + by the Carrier-Envelope Phases of an Ultrashort Laser Pulse: A Quasi-Classical Dynamics Study. J Phys Chem A 2020; 124:9710-9720. [PMID: 33191740 DOI: 10.1021/acs.jpca.0c08979] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A theoretical study on the coupled electron-nuclear dynamics of HD+ molecular ions under ultrashort, intense laser pulses is performed by employing a well-established quasi-classical model. The influence of the laser carrier-envelope phase on various channel (H + D+, D + H+, and H+ + D+) probabilities is investigated at different laser field intensities. The carrier-envelope phase is found to govern the dissociation (H + D+ and D + H+) and Coulomb explosion (H+ + D+) channel probabilities. The kinetic energy release distributions of the fragments are also found to be sensitive to the carrier-envelope phase of the laser pulse. Our results are in agreement with the previously reported quantum dynamics studies and experiments.
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Affiliation(s)
- Gaurav Pandey
- Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Diptesh Dey
- Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
| | - Ashwani K Tiwari
- Indian Institute of Science Education and Research Kolkata, Mohanpur 741246, India
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5
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Kangaparambil S, Hanus V, Dorner-Kirchner M, He P, Larimian S, Paulus G, Baltuška A, Xie X, Yamanouchi K, He F, Lötstedt E, Kitzler-Zeiler M. Generalized Phase Sensitivity of Directional Bond Breaking in the Laser-Molecule Interaction. PHYSICAL REVIEW LETTERS 2020; 125:023202. [PMID: 32701337 DOI: 10.1103/physrevlett.125.023202] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
We establish a generalized picture of the phase sensitivity of laser-induced directional bond breaking using the H_{2} molecule as the example. We show that the well-known proton ejection anisotropy measured with few-cycle pulses as a function of their carrier-envelope phases arises as an amplitude modulation of an intrinsic anisotropy that is sensitive to the laser phase at the ionization time and determined by the molecule's electronic structure. Our work furthermore reveals a strong electron-proton correlation that may open up a new approach to experimentally accessing the laser-sub-cycle intramolecular electron dynamics also in larger molecules.
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Affiliation(s)
| | - Václav Hanus
- Photonics Institute, Technische Universität Wien, 1040 Vienna, Austria
| | | | - Peilun He
- Key Laboratory for Laser Plasmas and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | | | - Gerhard Paulus
- Institute of Optics and Quantum Electronics, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Andrius Baltuška
- Photonics Institute, Technische Universität Wien, 1040 Vienna, Austria
| | - Xinhua Xie
- Photonics Institute, Technische Universität Wien, 1040 Vienna, Austria
| | - Kaoru Yamanouchi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Feng He
- Key Laboratory for Laser Plasmas and School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Erik Lötstedt
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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6
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Zhang Q, Fukahori S, Ando T, Kanya R, Iwasaki A, Rathje T, Paulus GG, Yamanouchi K. Absolute carrier-envelope-phase dependences of single and double ionization of methanol in a near-IR few-cycle laser field. J Chem Phys 2020; 152:194304. [PMID: 33687232 DOI: 10.1063/5.0006485] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We investigate the carrier-envelope phase (CEP) dependences of the single and double ionization processes of methanol (CH3OH) in an intense near-IR few-cycle laser field (2.1 × 1014 W/cm2) by the asymmetry in the ejection direction of CH3 + for the non-hydrogen migration channels and CH2 + for the hydrogen migration channels created through the C-O bond breaking after the ionization. Based on the absolute CEP values at the laser-molecule interaction point, calibrated by the method using intense few-cycle circularly polarized laser pulses [Fukahori et al., Phys. Rev. A 95, 053410-1-053410-14 (2017)], we confirm that methanol cations are produced by tunnel ionization and methanol dications are produced by the recollisional double ionization. We obtain the phase offset for the double ionization accompanying no hydrogen migration to be 1.85π as the absolute CEP at which the extent of the asymmetry becomes maximum. We interpret the phase shift of 0.85π from the phase offset of 1.0π for the tunnel ionization, estimated by a tunnel ionization model incorporating the chemical bond asymmetry, as the corresponding time delay associated with the electron recollisional ionization. The positive phase shift of 0.13π for the single ionization in the non-hydrogen migration channel is interpreted as the additional time (165 as) with which a methanol cation can be excited electronically prior to the decomposition. The additional phase shift of 0.22π for the single ionization in the hydrogen migration channel is interpreted as the additional time (280 as) required for a methanol cation to be excited electronically leading to the hydrogen migration prior to the decomposition.
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Affiliation(s)
- Qiqi Zhang
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shinichi Fukahori
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Toshiaki Ando
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Reika Kanya
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Atsushi Iwasaki
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tim Rathje
- Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität, Max-Wien-Platz 1, 07743 Jena, Germany
| | - Gerhard G Paulus
- Institut für Optik und Quantenelektronik, Friedrich-Schiller-Universität, Max-Wien-Platz 1, 07743 Jena, Germany
| | - Kaoru Yamanouchi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Sharma P, Das S, Vatsa RK. Tailoring Ion Charge State Distribution in Tetramethyltin Clusters under Influence of Moderate Intensity Picosecond Laser Pulse: Role of Laser Wavelength and Rate of Energy Deposition. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:2361-2370. [PMID: 28733969 DOI: 10.1007/s13361-017-1755-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 07/03/2017] [Accepted: 07/03/2017] [Indexed: 06/07/2023]
Abstract
Systematic manipulation of ionic-outcome in laser-cluster interaction process has been realized for studies carried out on tetramethyltin (TMT) clusters under picosecond laser conditions, determined by choice of laser wavelength and intensity. As a function of laser intensity, TMT clusters exhibit gradual enhancement in overall ionization of its cluster constituents, up to a saturation level of ionization, which was distinct for different wavelengths (266, 355, and 532 nm). Simultaneously, systematic appearance of higher multiply charged atomic ions and shift in relative abundance of multiply charged atomic ions towards higher charge state was observed, using time-of-flight mass spectrometer. At saturation level, multiply charged atomic ions up to (C2+, Sn2+) at 266 nm, (C4+, Sn4+) at 355 nm, and (C4+, Sn6+) at 532 nm were detected. In addition, at 355 nm intra-cluster ion chemistry within the ionized cluster leads to generation of molecular hydrogen ion (H2+) and triatomic molecular hydrogen ion (H3+). Generation of multiply charged atomic ions is ascribed to efficient coupling of laser pulse with the cluster media, facilitated by inner-ionized electrons produced within the cluster, at the leading edge of laser pulse. Role of inner-ionized electrons is authenticated by measuring kinetic energy distribution of electrons liberated upon disintegration of excessively ionized cluster, under the influence of picosecond laser pulse. Graphical Abstract ᅟ.
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Affiliation(s)
- Pramod Sharma
- Chemistry Division, Bhabha Atomic Research Center, Mumbai, 400 085, India.
| | - Soumitra Das
- Chemistry Division, Bhabha Atomic Research Center, Mumbai, 400 085, India
| | - Rajesh K Vatsa
- Chemistry Division, Bhabha Atomic Research Center, Mumbai, 400 085, India
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Li H, Kling NG, Gaumnitz T, Burger C, Siemering R, Schötz J, Liu Q, Ban L, Pertot Y, Wu J, Azzeer AM, de Vivie-Riedle R, Wörner HJ, Kling MF. Sub-cycle steering of the deprotonation of acetylene by intense few-cycle mid-infrared laser fields. OPTICS EXPRESS 2017; 25:14192-14203. [PMID: 28789005 DOI: 10.1364/oe.25.014192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Accepted: 06/02/2017] [Indexed: 05/21/2023]
Abstract
Directional breaking of the C-H/C-D molecular bond is manipulated in acetylene (C2H2) and deuterated acetylene (C2D2) by waveform controlled few-cycle mid-infrared laser pulses with a central wavelength around 1.6 μm at an intensity of about 8 × 1013 W/cm2. The directionality of the deprotonation of acetylene is controlled by changing the carrier-envelope phase (CEP). The CEP-control can be attributed to the laser-induced superposition of vibrational modes, which is sensitive to the sub-cycle evolution of the laser waveform. Our experiments and simulations indicate that near-resonant, intense mid-infrared pulses permit a higher degree of control of the directionality of the reaction compared to those obtained in near-infrared fields, in particular for the deuterated species.
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Endo T, Fujise H, Kawachi Y, Ishihara A, Matsuda A, Fushitani M, Kono H, Hishikawa A. Selective bond breaking of CO2 in phase-locked two-color intense laser fields: laser field intensity dependence. Phys Chem Chem Phys 2017; 19:3550-3556. [DOI: 10.1039/c6cp07471e] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One of the two equivalent C–O bonds of CO2 can be selectively broken by phase-locked two-color intense laser fields.
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Affiliation(s)
- Tomoyuki Endo
- Research Center for Materials Science
- Nagoya University
- Nagoya
- Japan
- Department of Chemistry
| | - Hikaru Fujise
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya
- Japan
| | - Yuuna Kawachi
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya
- Japan
| | - Ayaka Ishihara
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya
- Japan
| | - Akitaka Matsuda
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya
- Japan
| | - Mizuho Fushitani
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya
- Japan
| | - Hirohiko Kono
- Department of Chemistry
- Graduate School of Science
- Tohoku University
- Sendai 980-8578
- Japan
| | - Akiyoshi Hishikawa
- Research Center for Materials Science
- Nagoya University
- Nagoya
- Japan
- Department of Chemistry
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10
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Li H, Mignolet B, Wang Z, Betsch KJ, Carnes KD, Ben-Itzhak I, Cocke CL, Remacle F, Kling MF. Transition from SAMO to Rydberg State Ionization in C 60 in Femtosecond Laser Fields. J Phys Chem Lett 2016; 7:4677-4682. [PMID: 27934203 PMCID: PMC5190148 DOI: 10.1021/acs.jpclett.6b02139] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 11/02/2016] [Indexed: 05/20/2023]
Abstract
The transition between two distinct ionization mechanisms in femtosecond laser fields at 785 nm is observed for C60 molecules. The transition occurs in the investigated intensity range from 3 to 20 TW/cm2 and is visualized in electron kinetic energy spectra below the one-photon energy (1.5 eV) obtained via velocity map imaging. Assignment of several observed broad spectral peaks to ionization from superatom molecular orbitals (SAMOs) and Rydberg states is based on time-dependent density functional theory simulations. We find that ionization from SAMOs dominates the spectra for intensities below 5 TW/cm2. As the intensity increases, Rydberg state ionization exceeds the prominence of SAMOs. Using short laser pulses (20 fs) allowed uncovering of distinct six-lobe photoelectron angular distributions with kinetic energies just above the threshold (below 0.2 eV), which we interpret as over-the-barrier ionization of shallow f-Rydberg states in C60.
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Affiliation(s)
- H. Li
- J. R. Macdonald
Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, United States
- State
Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
| | - B. Mignolet
- Department
of Chemistry, University of Liege, B-4000 Liege, Belgium
| | - Z. Wang
- J. R. Macdonald
Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, United States
- The MOE Key Laboratory
of Weak-Light Nonlinear Photonics, TEDA Applied Physics
Institute and School of Physics, Nankai
University, Tianjin 300457, China
| | - K. J. Betsch
- J. R. Macdonald
Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, United States
| | - K. D. Carnes
- J. R. Macdonald
Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, United States
| | - I. Ben-Itzhak
- J. R. Macdonald
Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, United States
| | - C. L. Cocke
- J. R. Macdonald
Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, United States
| | - F. Remacle
- Department
of Chemistry, University of Liege, B-4000 Liege, Belgium
- E-mail: (F.R.)
| | - M. F. Kling
- J. R. Macdonald
Laboratory, Physics Department, Kansas State University, Manhattan, Kansas 66506, United States
- Department
of Physics, Ludwig-Maximilians-Universität
Munich, D-85748 Garching, Germany
- E-mail: (M.F.K.)
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Mullins T, Küpper J. Preface to the Special Edition on Femtochemistry and "The Hamburg Conference on Femtochemistry 2015 (FEMTO12)". STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2016; 3:043001. [PMID: 27648462 PMCID: PMC5001970 DOI: 10.1063/1.4961613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 08/13/2016] [Indexed: 11/15/2022]
Affiliation(s)
- Terry Mullins
- Center for Free-Electron Laser Science , DESY, Notkestrasse 85, 22607 Hamburg, Germany
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