Resonant absorption of short pulses

Sergey V. Nazarenko; Alan C. Newell; Alexander M. Rubenchik

doi:10.1016/0375-9601(94)00960-W

Resonant absorption of short pulses

Sergey V. Nazarenko, Alan C. Newell, Alexander M. Rubenchik

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

7 Scopus citations

Abstract

The resonant transformation of a Gaussian pulse of electromagnetic radiation into a Langmuir wave in an inhomogeneous plasma is studied. It is shown that if the pulse duration is smaller than the Langmuir wave (plasmon) lifetime, then substantial changes in the Langmuir field profile occur. Namely, the width of this profile becomes greater and its maximum is smaller compared to the correspondent values for the case of long pulses and the same value of the plasmon lifetime. This fact may be useful for experimental measurements of the electron collision frequency. Indirectly, the collision frequency can be obtained by measuring the intensity of the the second harmonic of the postpulse emission, the expression for which in terms of the Langmuir field is given in this Letter. The limits of validity of linear theory due to plasma profile distortion and wavebreaking are discussed.

Original language	English (US)
Pages (from-to)	159-163
Number of pages	5
Journal	Physics Letters A
Volume	197
Issue number	2
DOIs	https://doi.org/10.1016/0375-9601(94)00960-W
State	Published - Jan 16 1995

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1016/0375-9601(94)00960-W

Cite this

@article{b81db81502c947d9b383a4887ea4193c,

title = "Resonant absorption of short pulses",

abstract = "The resonant transformation of a Gaussian pulse of electromagnetic radiation into a Langmuir wave in an inhomogeneous plasma is studied. It is shown that if the pulse duration is smaller than the Langmuir wave (plasmon) lifetime, then substantial changes in the Langmuir field profile occur. Namely, the width of this profile becomes greater and its maximum is smaller compared to the correspondent values for the case of long pulses and the same value of the plasmon lifetime. This fact may be useful for experimental measurements of the electron collision frequency. Indirectly, the collision frequency can be obtained by measuring the intensity of the the second harmonic of the postpulse emission, the expression for which in terms of the Langmuir field is given in this Letter. The limits of validity of linear theory due to plasma profile distortion and wavebreaking are discussed.",

author = "Nazarenko, {Sergey V.} and Newell, {Alan C.} and Rubenchik, {Alexander M.}",

note = "Funding Information: This work was supported by the Air Force Office of Scientific Research grant no. F496209310058DEF (SVN and ACN) and grant LLNL-IUT no. 8264118 (AMR).",

year = "1995",

month = jan,

day = "16",

doi = "10.1016/0375-9601(94)00960-W",

language = "English (US)",

volume = "197",

pages = "159--163",

journal = "Physics Letters A",

issn = "0375-9601",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - Resonant absorption of short pulses

AU - Nazarenko, Sergey V.

AU - Newell, Alan C.

AU - Rubenchik, Alexander M.

N1 - Funding Information: This work was supported by the Air Force Office of Scientific Research grant no. F496209310058DEF (SVN and ACN) and grant LLNL-IUT no. 8264118 (AMR).

PY - 1995/1/16

Y1 - 1995/1/16

N2 - The resonant transformation of a Gaussian pulse of electromagnetic radiation into a Langmuir wave in an inhomogeneous plasma is studied. It is shown that if the pulse duration is smaller than the Langmuir wave (plasmon) lifetime, then substantial changes in the Langmuir field profile occur. Namely, the width of this profile becomes greater and its maximum is smaller compared to the correspondent values for the case of long pulses and the same value of the plasmon lifetime. This fact may be useful for experimental measurements of the electron collision frequency. Indirectly, the collision frequency can be obtained by measuring the intensity of the the second harmonic of the postpulse emission, the expression for which in terms of the Langmuir field is given in this Letter. The limits of validity of linear theory due to plasma profile distortion and wavebreaking are discussed.

AB - The resonant transformation of a Gaussian pulse of electromagnetic radiation into a Langmuir wave in an inhomogeneous plasma is studied. It is shown that if the pulse duration is smaller than the Langmuir wave (plasmon) lifetime, then substantial changes in the Langmuir field profile occur. Namely, the width of this profile becomes greater and its maximum is smaller compared to the correspondent values for the case of long pulses and the same value of the plasmon lifetime. This fact may be useful for experimental measurements of the electron collision frequency. Indirectly, the collision frequency can be obtained by measuring the intensity of the the second harmonic of the postpulse emission, the expression for which in terms of the Langmuir field is given in this Letter. The limits of validity of linear theory due to plasma profile distortion and wavebreaking are discussed.

UR - http://www.scopus.com/inward/record.url?scp=33947370272&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33947370272&partnerID=8YFLogxK

U2 - 10.1016/0375-9601(94)00960-W

DO - 10.1016/0375-9601(94)00960-W

M3 - Article

AN - SCOPUS:33947370272

SN - 0375-9601

VL - 197

SP - 159

EP - 163

JO - Physics Letters A

JF - Physics Letters A

IS - 2

ER -

Resonant absorption of short pulses

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this