Dynamics of solvated electrons during femtosecond laser-induced plasma generation in water

Noritaka Sakakibara; Tsuyohito Ito; Kazuo Terashima; Yukiya Hakuta; Eisuke Miura

doi:10.1103/PhysRevE.102.053207

Dynamics of solvated electrons during femtosecond laser-induced plasma generation in water

Phys Rev E. 2020 Nov;102(5-1):053207. doi: 10.1103/PhysRevE.102.053207.

Authors

Noritaka Sakakibara^{1

2}, Tsuyohito Ito^{1

2}, Kazuo Terashima^{1

2}, Yukiya Hakuta², Eisuke Miura²

Affiliations

¹ Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8561, Japan.
² AIST-UTokyo Advanced Operando-Measurement Technology Open Innovation Laboratory (OPERANDO-OIL), National Institute of Advanced Industrial Science and Technology (AIST), 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8589, Japan.

PMID: 33327104
DOI: 10.1103/PhysRevE.102.053207

Abstract

We studied the dynamics of solvated electrons in the early stage of plasma generation in water induced with an intense femtosecond laser pulse. According to the decay kinetics of solvated electrons, a fast recombination process of solvated electrons (geminate recombination) occurred with a more prolonged lifetime (500 ps to 1 ns) than that observed in previous pulse photolysis studies (10-100 ps). This unusually longer lifetime is attributed to additional production of solvated electrons due to abundant free electrons generated with the laser-induced plasma, implying significant influence of free electrons on the dynamics of solvated electrons.