Plasma Physics

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2019-11-04
17:38
OpenAccess [GSI-2019-01053] Report

News and reports from High Energy Density generated by heavy ion and laser beams : 2018
[GSI Report 2019-2]
Darmstadt : GSI 101 S. () [10.15120/GSI-2019-01053]
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2019-10-24
15:03
OpenAccess [GSI-2019-01027] Journal Article
et al
A study on the effects and visibility of low-order aberrations on laser beams with orbital angular momentum
Laguerre-Gaussian-like laser beams have been proposed for driving experiments with high-intensity lasers. They carry orbital angular momentum and exhibit a ring-shaped intensity distribution in the far field which make them particularly attractive for various applications. [...]
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ddc:530
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2019-10-24
09:50
[GSI-2019-01023] Master Thesis

Erhöhung der optisch parametrischen Verstärkung am PHELIX
49 S. () = Masterarbeit, Technische Universität Darmstadt, 2019
Der erste nichtlineare optische Effekt wurde 1961 von Franken et al. beobachtet, ein Jahr nach der Realisierung des ersten Lasers. [...]

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2019-10-18
13:30
[GSI-2019-01001] Journal Article

Picosecond contrast degradation by surface imperfections in chirped-pulse-amplification stretchers
In this paper, we propose a study of the picosecond temporal contrast degradation of ultrashort laser pulses by surface defects in pulse stretchers. In a chirped-pulse-amplification stretcher or compressor, dust and damages on the surface of an optical element lead to a spectral amplitude modulation [...]
ddc:610
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2019-10-17
15:05
OpenAccess [GSI-2019-01000] Dissertation / PhD Thesis

Zeitlicher Laserpulskontrast – Metrologie und Optimierung
83 pp. () [10.15120/GSI-2019-01000] = Dissertation, Technische Universität Darmstadt, 2019
Die vorliegende Ausarbeitung stellt eine umfassende wissenschaftliche Analyse des zeitlichen Kontrasts intensiver Laserpulse dar. Sie dient dem Verständnis der Ursachen von Kontrast-limitierenden Einflüssenund der Verbesserung des zeitlichen Kontrasts [...]
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2019-10-14
16:31
OpenAccess [GSI-2019-00980] Journal Article/Contribution to a conference proceedings
et al
Ablation driven by hot electrons in shock ignition
8th International Conference on Inertial Fusion Sciences and Applications (IFSA 2013), IFSA 2013, NaraNara, Japan, 8 Sep 2013 - 13 Sep 20132013-09-082013-09-13 Journal of physics / Conference Series Conference Series 688, 012087 () [10.1088/1742-6596/688/1/012087]
An analytical model for the ablation driven by hot electrons is developed. The hot electrons are assumed to carry on the totality of the absorbed laser energy. [...]
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2019-09-30
12:59
[GSI-2019-00952] Journal Article
et al
Investigation of the temperature in dense carbon near the solid-liquid phase transition between 100 GPa and 200 GPa with spectrally resolved X-ray scattering
We present experiments investigating dense carbon at pressures between 100 GPa and 200 GPa and temperatures between 5,000 K and 15,000 K. High-pressure samples with different temperatures were created by laser-driven shock compression of graphite and varying the initial density from 1.53 g/cm(3) to 2.21 g/cm(3) and the drive laser intensity from 7.1 TW/cm(2) to 14.2 TW/cm(2). [...]
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2019-09-12
15:15
[GSI-2019-00916] Contribution to a conference proceedings
et al
Development of an Actively Cooled Glass Amplifier at GSI
Conference on Lasers and Electro-Optics, CLEO, San JoseSan Jose, United States, 5 May 2019 - 10 May 20192019-05-052019-05-10 OSA 10 pp. () [https://doi.org/10.1364/CLEO_AT.2019.JTu2A.68]
Increasing the repetition rate of a large aperture glass amplifier requires active cooling systems. We present our cooling concept, potential coolants and simulation results achieving an increase in repetition rate by a factor of 10..

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2019-08-16
11:12
[GSI-2019-00838] Journal Article
et al
New geometry of wide-aperture quadrupole magnets for plasma experiments in the FAIR project
ddc:530
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2019-08-16
11:10
[GSI-2019-00837] Journal Article
et al
A fast alignment method for grating-based X-ray phase-contrast imaging systems
ddc:610
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