Observation of laser-assisted electron-impact ionization in ultrashort intense laser fields

Hiroi T, Morimoto Y, Kanya R, Yamanouchi K (2021)


Publication Type: Journal article

Publication year: 2021

Journal

Book Volume: 104

Journal Issue: 6

DOI: 10.1103/PhysRevA.104.062812

Abstract

A laser-assisted (e, 2e) [LA(e, 2e)] process of Ar in an ultrashort (1.2 ps) near-infrared intense laser field, Ar + e(-) + h nu -> Ar+ + e(-) + e(-), was observed by coincidence measurements of the fast electron scattered forward within the small-angle range and the slow electron emitted to the wide-angle range. The spectrum of the sum of the kinetic energies of fast and slow electrons exhibited a shoulder structure at the one-photon energy shift from the (e, 2e) peak for the Ar 3p orbital, which was unambiguously assigned to the LA(e, 2e) process with the one-photon energy gain. The determined triply differential cross section of the LA(e, 2e) process with one-photon gain from the laser field was approximately twice as large as a theoretical estimate and this enhancement was regarded as an evidence of the formation of light-dressed states of Ar.

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How to cite

APA:

Hiroi, T., Morimoto, Y., Kanya, R., & Yamanouchi, K. (2021). Observation of laser-assisted electron-impact ionization in ultrashort intense laser fields. Physical Review A, 104(6). https://doi.org/10.1103/PhysRevA.104.062812

MLA:

Hiroi, Takashi, et al. "Observation of laser-assisted electron-impact ionization in ultrashort intense laser fields." Physical Review A 104.6 (2021).

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