Laser-Generated Ultrashort Multimegagauss Magnetic Pulses in Plasmas

A. S. Sandhu; A. K. Dharmadhikari; P. P. Rajeev; G. R. Kumar; S. Sengupta; A. Das; P. K. Kaw

doi:10.1103/PhysRevLett.89.225002

Laser-Generated Ultrashort Multimegagauss Magnetic Pulses in Plasmas

A. S. Sandhu, A. K. Dharmadhikari, P. P. Rajeev, G. R. Kumar, S. Sengupta, A. Das, P. K. Kaw

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

96 Scopus citations

Abstract

We demonstrate ultrashort (6 ps), multimegagauss (27 MG) magnetic pulses generated upon interaction of an intense laser pulse [Formula presented], 100 fs) with a solid target. The temporal evolution of these giant fields generated near the critical layer is obtained with the highest resolution reported thus far. Particle-in-cell simulations and phenomenological modeling is used to explain the results. The first direct observations of anomalously rapid damping of plasma shielding currents produced in response to the hot electron currents penetrating the bulk plasma are presented.

Original language	English (US)
Journal	Physical review letters
Volume	89
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.89.225002
State	Published - 2002
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.89.225002

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title = "Laser-Generated Ultrashort Multimegagauss Magnetic Pulses in Plasmas",

abstract = "We demonstrate ultrashort (6 ps), multimegagauss (27 MG) magnetic pulses generated upon interaction of an intense laser pulse [Formula presented], 100 fs) with a solid target. The temporal evolution of these giant fields generated near the critical layer is obtained with the highest resolution reported thus far. Particle-in-cell simulations and phenomenological modeling is used to explain the results. The first direct observations of anomalously rapid damping of plasma shielding currents produced in response to the hot electron currents penetrating the bulk plasma are presented.",

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AU - Sandhu, A. S.

AU - Dharmadhikari, A. K.

AU - Rajeev, P. P.

AU - Kumar, G. R.

AU - Sengupta, S.

AU - Das, A.

AU - Kaw, P. K.

PY - 2002

Y1 - 2002

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AB - We demonstrate ultrashort (6 ps), multimegagauss (27 MG) magnetic pulses generated upon interaction of an intense laser pulse [Formula presented], 100 fs) with a solid target. The temporal evolution of these giant fields generated near the critical layer is obtained with the highest resolution reported thus far. Particle-in-cell simulations and phenomenological modeling is used to explain the results. The first direct observations of anomalously rapid damping of plasma shielding currents produced in response to the hot electron currents penetrating the bulk plasma are presented.

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Laser-Generated Ultrashort Multimegagauss Magnetic Pulses in Plasmas

Abstract

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