Výsledky vyhledávání - "D Altenbernd"

Plasma frequency and harmonic emission from fs-laser plasmas

Autor: D. Oberschmidt, André Mysyrowicz, P. Audebert, Eckhart Förster, J. P. Geindre, U. Teubner, Paul Gibbon, D Altenbernd, J. C. Gauthier

Publikováno v: Scopus-Elsevier

Electromagnetic emission at the plasma frequency ωp and its harmonics nωp has been studied. Although such emission is well known from very low density plasmas (electron density of the order of ne ≈ 108 cm−3) now, for the first time it has also

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::957e1e9571216aa48262b1dee485d889
https://doi.org/10.1017/s0263034699174056

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Observation of VUV radiation at wavelengths in the ωp- and 2ωp-wavelength range emitted from femtosecond laser-plasmas

Autor: E. Förster, André Mysyrowicz, R Lichters, Paul Gibbon, J. C. Gauthier, D Altenbernd, J. P. Geindre, Pierre Audebert, Juergen Meyer-ter-Vehn, U. Teubner

Publikováno v: Optics Communications. 144:217-221

Electromagnetic emission close to multiples of the plasma frequency ω p has been observed experimentally from short-pulse laser-irradiated solid targets. Such radiation may be generated by a two-step process in which hot electron jets excite Langmui

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b3a9505b16ae5daacd6a1c9c2cfb8116
https://doi.org/10.1016/s0030-4018(97)00468-9

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Onset of diffuse reflectivity and fast electron flux inhibition in 528-nm-laser–solid interactions at ultrahigh intensity

Autor: U Teubner, Thomas Feurer, G. Malka, JL Miquel, I. Uschmann, D Altenbernd, Paul Gibbon, Eckhart Förster, R. Sauerbrey, W Theobald

Publikováno v: Scopus-Elsevier

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a468274b4c5c6e838091b44cfe6363a
https://doi.org/10.1103/physreve.56.4608

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Soft x-ray brilliance of femtosecond and picosecond laser-plasmas

Autor: Patrick Audebert, A. Antonetti, J. P. Geindre, E. Förster, G. Grillon, J. C. Gauthier, U. Teubner, D Altenbernd, Paul Gibbon

Publikováno v: Journal of Physics B: Atomic, Molecular and Optical Physics. 30:3969-3982

Soft x-ray spectra (10-70 ˚ A) from carbon and aluminium plasmas produced by high- intensity laser pulses have been studied as a function of laser pulse duration (130 fs-1.3 ps) and intensity (10 14 -5 10 17 Wc m 2 ) for two different laser waveleng

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ce1313ad283b594529220640a44ebf1e
https://doi.org/10.1088/0953-4075/30/17/021

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Plasma density determination by transmission of laser-generated surface harmonics

Autor: André Mysyrowicz, U. Teubner, Paul Gibbon, J. C. Gauthier, D Altenbernd, E. Förster, Patrick Audebert, J. P. Geindre

Publikováno v: Physical Review E : Statistical, Nonlinear, and Soft Matter Physics
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 1997, 55 (6), pp.R6352-R6355. ⟨10.1103/PhysRevE.55.R6352⟩
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 1997, 55 (6), pp.R6352-R6355. ⟨10.1103/PhysRevE.55.R6352⟩
Scopus-Elsevier

A diagnostic is proposed for determining the density of laser-generated plasmas. The scheme exploits surface harmonics generated by short, intense laser pulses reflected from an overdense plasma layer. At sufficiently high intensities (I${\ensuremath

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42c7c559ded014ca1d79769c175823e8
https://hal-polytechnique.archives-ouvertes.fr/hal-00465609

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Control of the X-Ray Emission from High-Intensity Ultrashort Laser Produced Plasmas

Autor: U. Teubner, D. Altenbernd, E. Förster

Publikováno v: Applications of High Field and Short Wavelength Sources VII.

The control of the X-ray emission from high-intensity laser-produced plasmas is a subject of current interest (see, e.g., [1]) and requires an understanding of the laser-pulse absorption, thermal transport and the X-ray conversion processes. Both dep

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0f3d8fb81d61fc1b1f88ff96405bee1f
https://doi.org/10.1364/hfsw.1997.the32

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Absolute measurement of the spectral brilliance of a subpicosecond UV-laser induced soft x-ray source

Autor: R. Häßner, W. Theobald, R. Sauerbrey, D. Altenbernd, U. Teubner, E. Forster, T. Wilhein, B. Niemann, G. Schmahl

Publikováno v: Applications of High Field and Short Wavelength Sources VII.

We have investigated the spectral brilliance of subpicosecond UV-laser-plasmas as a source for the soft x-ray microscopy in the so-called ‘water-window’. The spectral range between the absorption K-edges of carbon (4.36 nm) and oxygen (2.32 nm) i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9f393d2adc5b550c687227f9ea7f1c61
https://doi.org/10.1364/hfsw.1997.the31

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Absorption of high intensity femtosecond laser pulses in solids and the production of suprathermal electrons

Autor: T. Feurer, W. Theobald, R. Sauerbrey, I. Uschmann, D. Altenbernd, U. Teubner, P. Gibbon, E. Forster, G. Malka, J.L. Miquel

Publikováno v: Applications of High Field and Short Wavelength Sources VII.

Femtosecond high power laser systems offer the posibility to create plasmas with high electron densities and short scale lengths at relatively moderate energies. One possible application of such lasers is the recently proposed ’fast ignitor’ [Tab

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8d592f6ccacf072adaed913da5bbdac
https://doi.org/10.1364/hfsw.1997.the30

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X-ray brilliance measurements of a subpicosecond laser plasma using an elliptical off-axis reflection zone plate

Autor: D Altenbernd, U. Teubner, Eckhart Förster, R. Sauerbrey, R. Hässner, W. Theobald, Thomas Wilhein

Publikováno v: Journal of the Optical Society of America B. 15:1235

An absolutely calibrated spectrograph based on a new single x-ray optical element, namely, an elliptical off-axis reflection zone plate, has been used for brilliance measurements of a laser-produced plasma of solid carbon and boron nitride. The spect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1e66cf324331af154e51a5a09879c030
https://doi.org/10.1364/josab.15.001235

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