Real-time probing of ultrafast residual charge dynamics

Junjie Li; Xuan Wang; Zhaoyang Chen; Jun Zhou; Samuel S. Mao; Jianming Cao

doi:10.1063/1.3533811

Real-time probing of ultrafast residual charge dynamics

Junjie Li
, Xuan Wang
, Zhaoyang Chen
, Jun Zhou
, Samuel S. Mao
, Jianming Cao

Mechanical & Nuclear Engineering

National High Magnetic Field Laboratory
University of California, Berkeley

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

The temporal evolution of residual charges during laser ablation of metal and dielectric materials was investigated by measuring the correlated transient electric field using femtosecond electron shadow imaging and deflectometry. The results indicate that residual charges in metals can redistribute themselves almost instantly, abiding by the boundary conditions and Maxwell equations in the same way as they would at electrostatic equilibrium condition, but residual charges in dielectrics are confined within the excited area for hundreds of picoseconds and beyond. These observations provide an experimental support to the alleged Coulomb explosion phenomenon in previous studies as well as a reference for modeling residual charge dynamics.

Original language	British English
Article number	011501
Journal	Applied Physics Letters
Volume	98
Issue number	1
DOIs	https://doi.org/10.1063/1.3533811
State	Published - 3 Jan 2011

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title = "Real-time probing of ultrafast residual charge dynamics",

abstract = "The temporal evolution of residual charges during laser ablation of metal and dielectric materials was investigated by measuring the correlated transient electric field using femtosecond electron shadow imaging and deflectometry. The results indicate that residual charges in metals can redistribute themselves almost instantly, abiding by the boundary conditions and Maxwell equations in the same way as they would at electrostatic equilibrium condition, but residual charges in dielectrics are confined within the excited area for hundreds of picoseconds and beyond. These observations provide an experimental support to the alleged Coulomb explosion phenomenon in previous studies as well as a reference for modeling residual charge dynamics.",

author = "Junjie Li and Xuan Wang and Zhaoyang Chen and Jun Zhou and Mao, \{Samuel S.\} and Jianming Cao",

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AU - Li, Junjie

AU - Wang, Xuan

AU - Chen, Zhaoyang

AU - Zhou, Jun

AU - Mao, Samuel S.

AU - Cao, Jianming

N1 - Funding Information: This work was supported by NSF under Grant No. DMR-0907262.

PY - 2011/1/3

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N2 - The temporal evolution of residual charges during laser ablation of metal and dielectric materials was investigated by measuring the correlated transient electric field using femtosecond electron shadow imaging and deflectometry. The results indicate that residual charges in metals can redistribute themselves almost instantly, abiding by the boundary conditions and Maxwell equations in the same way as they would at electrostatic equilibrium condition, but residual charges in dielectrics are confined within the excited area for hundreds of picoseconds and beyond. These observations provide an experimental support to the alleged Coulomb explosion phenomenon in previous studies as well as a reference for modeling residual charge dynamics.

AB - The temporal evolution of residual charges during laser ablation of metal and dielectric materials was investigated by measuring the correlated transient electric field using femtosecond electron shadow imaging and deflectometry. The results indicate that residual charges in metals can redistribute themselves almost instantly, abiding by the boundary conditions and Maxwell equations in the same way as they would at electrostatic equilibrium condition, but residual charges in dielectrics are confined within the excited area for hundreds of picoseconds and beyond. These observations provide an experimental support to the alleged Coulomb explosion phenomenon in previous studies as well as a reference for modeling residual charge dynamics.

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JF - Applied Physics Letters

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Real-time probing of ultrafast residual charge dynamics

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