Strong-field induced fragmentation and isomerization of toluene probed by ultrafast femtosecond electron diffraction and mass spectrometry | Zendy

Yanwei Xiong | Zendy; Kurtis Borne | Zendy; Andrés Moreno Carrascosa | Zendy; Sajib Kumar Saha | Zendy; Kyle Wilkin | Zendy; Mengqi Yang | Zendy; Surjendu Bhattacharyya | Zendy; Keyu Chen | Zendy; Wenpeng Du | Zendy; Lingyu Ma | Zendy; Nathan Marshall | Zendy; J. Pedro F. Nunes | Zendy; Shashank Pathak | Zendy; Zane Phelps | Zendy; Xuan Xu | Zendy; Haiwang Yong | Zendy; Kenneth A. Lopata | Zendy; Peter Weber | Zendy; Artem Rudenko | Zendy; Daniel Rolles | Zendy; Martin Centurion | Zendy

Open Access

Strong-field induced fragmentation and isomerization of toluene probed by ultrafast femtosecond electron diffraction and mass spectrometry

Author(s) -

Yanwei Xiong,

Kurtis Borne,

Andrés Moreno Carrascosa,

Sajib Kumar Saha,

Kyle Wilkin,

Mengqi Yang,

Surjendu Bhattacharyya,

Keyu Chen,

Wenpeng Du,

Lingyu Ma,

Nathan Marshall,

J. Pedro F. Nunes,

Shashank Pathak,

Zane Phelps,

Xuan Xu,

Haiwang Yong,

Kenneth A. Lopata,

Peter Weber,

Artem Rudenko,

Daniel Rolles,

Martin Centurion

Publication year - 2020

Publication title -

faraday discussions

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.255

H-Index - 110

eISSN - 1364-5498

pISSN - 1359-6640

DOI - 10.1039/d0fd00125b

Subject(s) - fragmentation (computing) , ultrafast electron diffraction , isomerization , toluene , mass spectrometry , femtosecond , chemistry , electron , ultrashort pulse , electron diffraction , diffraction , analytical chemistry (journal) , photochemistry , chemical physics , physics , laser , organic chemistry , chromatography , optics , nuclear physics , computer science , catalysis , operating system

We investigate the fragmentation and isomerization of toluene molecules induced by strong-field ionization with a femtosecond near-infrared laser pulse. Momentum-resolved coincidence time-of-flight ion mass spectrometry is used to determine the relative yield of different ionic products and fragmentation channels as a function of laser intensity. Ultrafast electron diffraction is used to capture the structure of the ions formed on a picosecond time scale by comparing the diffraction signal with theoretical predictions. Through the combination of the two measurements and theory, we are able to determine the main fragmentation channels and to distinguish between ions with identical mass but different structures. In addition, our diffraction measurements show that the independent atom model, which is widely used to analyze electron diffraction patterns, is not a good approximation for diffraction from ions. We show that the diffraction data is in very good agreement with ab initio scattering calculations.

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