Attosecond Electron Correlation Dynamics in Double Ionization of Benzene Probed with Two-Electron Angular Streaking

Winney, Alexander H.; Lee, Suk Kyoung; Lin, Yun Fei; Liao, Qing; Adhikari, Pradip; Basnayake, Gihan; Schlegel, H. Bernhard; Li, Wen

doi:10.1103/physrevlett.119.123201

Cited by 37 publications

(21 citation statements)

References 34 publications

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“…Nevertheless, although one finds in the literature [ 7 , 8 , 9 , 10 , 11 ] (and references therein) several studies on electron interactions with benzene, detailed investigations of the electron-impact ionization dynamics have not been performed to date, as far as the authors are aware. Nonetheless, different studies on the ionization and fragmentation dynamics of benzene produced by intense laser fields [ 12 , 13 , 14 ] or excited metastable atoms [ 15 ] can be found in the literature. On the other hand, different studies on the electron-impact ionization dynamics for other complex biologically relevant molecules such as DNA bases or pyrimidine are also reported [ 16 , 17 , 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Double and Triple Differential Cross Sections for Single Ionization of Benzene by Electron Impact

Lozano

Costa

Ren

et al. 2021

IJMS

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Experimental results for the electron impact ionization of benzene, providing double (DDCS) and triple differential cross sections (TDCS) at the incident energy of 90 eV, measured with a multi-particle momentum spectrometer, are reported in this paper. The most intense ionization channel is assigned to the parent ion (C6H6+) formation. The DDCS values are presented for three different transferred energies, namely 30, 40 and 50 eV. The present TDCS are given for two fixed values of the ejected electron energy (E2), at 5 and 10 eV, and an electron scattering angle (θ1) of 10°. Different features related to the molecular orbitals of benzene from where the electron is extracted are observed. In addition, a semi-empirical formula to be used as the inelastic angular distribution function in electron transport simulations has been derived from the present DDCS result and compared with other expressions available in the literature.

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Section: Introductionmentioning

confidence: 99%

Double and Triple Differential Cross Sections for Single Ionization of Benzene by Electron Impact

Lozano

Costa

Ren

et al. 2021

IJMS

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“…25 Since attosecond, strong pulses of circularly polarized light are the call of the day, strongfield effects in benzene invoke ample curiosity, for both experiments and theory. [25][26][27][28] The latest experiments on graphene have come up with new topological states created by laser pulses. 29 Even though the electronic structure of benzene is different from that of graphene, as the latter comprises a band structure that lacks a band gap, benzene can be considered a beginner's choice apropos model for graphene.…”

Section: Introductionmentioning

confidence: 99%

Bonding in light-induced vortices: benzene in a high-frequency circular polarized laser

Raj¹,

Paul²,

Mythreyi³

et al. 2019

Preprint

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The electronic structure of benzene in the presence of a high-intensity high-frequency circularly polarized laser supports a middle-of-the-ring electron localization. Here, the laser polarization coincides with the ring plane of benzene. The high-frequency oscillating electric field creates circular currents centered at each atom with a circle radius equal to the maximum field amplitude of the laser. All six carbons have six such rings.For a maximum field amplitude of 1.42 Å, which is the carbon-carbon bond distance, all six dynamic current circles intersect to create a deep vortex in the middle, which supports a bound state of a pair of electrons. Such states for benzene can be realized in experiments using a circularly polarized XUV-laser in a range of intensities 10 16 -10 17 W/cm 2 and frequencies 16 eV to 22 eV. Electronic dynamics calculations predict a minimal ionization of benzene when the rise-time of the laser pulse is sudden, indicating a possible experimental realization of these states characterized by a large cut-off in the harmonic generation spectra. This stable electronic structure of the light-dressed benzene is doubly-aromatic due to an extra aromaticity from a D 6h symmetric circular distortion of the σ-framework while the π-electrons, with low density in the ring-plane, are least affected.

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“…Besides, the longer wavelength laser source also meets the strict requirement of tunneling ionization with the Keldysh parameter γ 1, where the electron is ionized from the barrier formed by the combination of the Coulomb potential and quasi-static laser field. Moreover, using tunneling as fundamental concept, a lot of strong field phenomena and applications such as photoelectron holography [32], electron correlation in double ionization [33,34] and molecular orbital tomography [35][36][37][38] can be interpreted or realized.…”

Section: Introductionmentioning

confidence: 99%

Ultrafast Mid-IR Laser Pulses Generation via Chirp Manipulated Optical Parametric Amplification

et al. 2018

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Abstract:Over the past decades, optical parametric amplification (OPA) has become one of the most promising sources of ultrafast Mid-IR laser, owing to its outstanding properties including ultrabroad bandwidth, superior tunability, good beam quality, and scalable energy. In this paper, we review the recent progress in ultrashort laser pulse generation via chirp manipulated OPA, which improves the energy scalability and gain bandwidth by strategically chirping both pump and seed pulses. The gain mechanism is theoretically analyzed and the OPA processes are numerically simulated. In addition, the concept is verified experimentally. Femtosecond pulses with hundreds of mJ are generated in a high energy dual-chirped-OPA (DC-OPA), and ultrabroadband µJ-level spectra supporting sub-2-cycle pulse durations are achieved in BBP-OPA. Furthermore, the obtained pulses show excellent tunability through the NIR to Mid-IR regions, which makes them a suitable seeding source for further amplification as well as powerful tools in various applications such as strong field physics, attosecond science, and ultrafast spectroscopy.

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Attosecond Electron Correlation Dynamics in Double Ionization of Benzene Probed with Two-Electron Angular Streaking

Cited by 37 publications

References 34 publications

Double and Triple Differential Cross Sections for Single Ionization of Benzene by Electron Impact

Double and Triple Differential Cross Sections for Single Ionization of Benzene by Electron Impact

Bonding in light-induced vortices: benzene in a high-frequency circular polarized laser

Ultrafast Mid-IR Laser Pulses Generation via Chirp Manipulated Optical Parametric Amplification

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