Real-time detection of S(1D2) photofragments produced from the 1B2(1Σu+) state of CS2 by vacuum ultraviolet photoelectron imaging using 133 nm probe pulses

Takuya Horio, Roman Spesyvtsev, Yu Furumido, Toshinori Suzuki

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Ultrafast photodissociation dynamics from the 1B2(1Σu+) state of CS2 are studied by time-resolved photoelectron imaging using the fourth (4ω, 198 nm) and sixth (6ω, 133 nm) harmonics of a femtosecond Ti:sapphire laser. The 1B2 state of CS2 was prepared with the 4ω pulses, and subsequent dynamics were probed using the 6ω vacuum ultraviolet (VUV) pulses. The VUV pulses enabled real-time detection of S(1D2) photofragments, produced via CS2*(1B2(1Σu+)) → CS(X 1Σ+) + S(1D2). The photoionization signal of dissociating CS2*(1B2(1Σu+)) molecules starts to decrease at about 100 fs, while the S(1D2) fragments appear with a finite (ca. 400 fs) delay time after the pump pulse. Also discussed is the configuration interaction of the 1B2(1Σu+) state based on relative photoionization cross-sections to different cationic states.
LanguageEnglish
Article number013932
Number of pages6
JournalJournal of Chemical Physics
Volume147
Issue number1
Early online date9 May 2017
DOIs
Publication statusPublished - 7 Jul 2017

Fingerprint

Photoionization
Photoelectrons
photoelectrons
Vacuum
Photodissociation
Imaging techniques
vacuum
Aluminum Oxide
probes
pulses
photoionization
Time delay
Pumps
Molecules
Lasers
photodissociation
configuration interaction
sapphire
time lag
fragments

Keywords

  • photodissociation dynamics
  • photoelectron spectroscopy
  • pump-probe experiments
  • carbon disulphide
  • photoelectron imaging
  • photoionization
  • vacuum
  • ultraviolet
  • photfragmnets
  • photoabsorption spectrum

Cite this

@article{4e6f6196663a4f2eb15e145423808206,
title = "Real-time detection of S(1D2) photofragments produced from the 1B2(1Σu+) state of CS2 by vacuum ultraviolet photoelectron imaging using 133 nm probe pulses",
abstract = "Ultrafast photodissociation dynamics from the 1B2(1Σu+) state of CS2 are studied by time-resolved photoelectron imaging using the fourth (4ω, 198 nm) and sixth (6ω, 133 nm) harmonics of a femtosecond Ti:sapphire laser. The 1B2 state of CS2 was prepared with the 4ω pulses, and subsequent dynamics were probed using the 6ω vacuum ultraviolet (VUV) pulses. The VUV pulses enabled real-time detection of S(1D2) photofragments, produced via CS2*(1B2(1Σu+)) → CS(X 1Σ+) + S(1D2). The photoionization signal of dissociating CS2*(1B2(1Σu+)) molecules starts to decrease at about 100 fs, while the S(1D2) fragments appear with a finite (ca. 400 fs) delay time after the pump pulse. Also discussed is the configuration interaction of the 1B2(1Σu+) state based on relative photoionization cross-sections to different cationic states.",
keywords = "photodissociation dynamics, photoelectron spectroscopy, pump-probe experiments, carbon disulphide, photoelectron imaging, photoionization, vacuum, ultraviolet, photfragmnets, photoabsorption spectrum",
author = "Takuya Horio and Roman Spesyvtsev and Yu Furumido and Toshinori Suzuki",
note = "This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Horio, T., Spesyvtsev, R., Furumido, Y., & Suzuki, T. (2017). Real-time detection of S(1D2) photofragments produced from the 1B2(1Σu+) state of CS2 by vacuum ultraviolet photoelectron imaging using 133 nm probe pulses. Journal of Chemical Physics, 147(1), [013932] and may be found at https://doi.org/10.1063/1.4982219.",
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doi = "10.1063/1.4982219",
language = "English",
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Real-time detection of S(1D2) photofragments produced from the 1B2(1Σu+) state of CS2 by vacuum ultraviolet photoelectron imaging using 133 nm probe pulses. / Horio, Takuya; Spesyvtsev, Roman; Furumido, Yu; Suzuki, Toshinori.

In: Journal of Chemical Physics, Vol. 147, No. 1, 013932, 07.07.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Real-time detection of S(1D2) photofragments produced from the 1B2(1Σu+) state of CS2 by vacuum ultraviolet photoelectron imaging using 133 nm probe pulses

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AU - Spesyvtsev, Roman

AU - Furumido, Yu

AU - Suzuki, Toshinori

N1 - This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Horio, T., Spesyvtsev, R., Furumido, Y., & Suzuki, T. (2017). Real-time detection of S(1D2) photofragments produced from the 1B2(1Σu+) state of CS2 by vacuum ultraviolet photoelectron imaging using 133 nm probe pulses. Journal of Chemical Physics, 147(1), [013932] and may be found at https://doi.org/10.1063/1.4982219.

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AB - Ultrafast photodissociation dynamics from the 1B2(1Σu+) state of CS2 are studied by time-resolved photoelectron imaging using the fourth (4ω, 198 nm) and sixth (6ω, 133 nm) harmonics of a femtosecond Ti:sapphire laser. The 1B2 state of CS2 was prepared with the 4ω pulses, and subsequent dynamics were probed using the 6ω vacuum ultraviolet (VUV) pulses. The VUV pulses enabled real-time detection of S(1D2) photofragments, produced via CS2*(1B2(1Σu+)) → CS(X 1Σ+) + S(1D2). The photoionization signal of dissociating CS2*(1B2(1Σu+)) molecules starts to decrease at about 100 fs, while the S(1D2) fragments appear with a finite (ca. 400 fs) delay time after the pump pulse. Also discussed is the configuration interaction of the 1B2(1Σu+) state based on relative photoionization cross-sections to different cationic states.

KW - photodissociation dynamics

KW - photoelectron spectroscopy

KW - pump-probe experiments

KW - carbon disulphide

KW - photoelectron imaging

KW - photoionization

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KW - ultraviolet

KW - photfragmnets

KW - photoabsorption spectrum

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T2 - Journal of Chemical Physics

JF - Journal of Chemical Physics

SN - 0021-9606

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