Results 81 to 90 of about 331,101 (291)

Surface waves and electron acceleration from high-power, kilojoule-class laser interactions with underdense plasma

New Journal of Physics, 2013
Experiments were performed on the Omega EP laser facility to study laser pulse propagation, channeling phenomena and electron acceleration from high-intensity, high-power laser interactions with underdense plasma.
L Willingale, A G R Thomas, P M Nilson, H Chen, J Cobble, R S Craxton, A Maksimchuk, P A Norreys, T C Sangster, R H H Scott, C Stoeckl, C Zulick, K Krushelnick   +12 more
doaj   +1 more source

Nonintegrable Interaction of Ion-Acoustic and Electromagnetic Waves in a Plasma

, 1996
In this paper we re-examine the one-dimensional interaction of electromagnetic and ion acoustic waves in a plasma. Our model is similar to one solved by Rao et al. (Phys. Fluids, vol. 26, 2488 (1983)) under a number of analytical approximations.
A. C.-L. Chian, A.C.-L. Chian, A.C.-L. Chian, A.J. Lichtenberg, E. Infeld, F. B. Rizzato, G. Corso, G. Corso, G.I. de Oliveira, G.I. de Oliveira, G.I. de Oliveira, H.T. Moon, J. Guckenheimer, J. Weiland, J.M. Wersinger, N.N. Rao, P.K. Kaw, R.J. Noble, S. R. Lopes, S.R. Lopes, W.L. Kruer, X.T. He   +21 more
core   +3 more sources

Quantum anti-quenching of radiation from laser-driven structured plasma channels [PDF]

, 2020
We demonstrate that in the interaction of a high-power laser pulse with a structured solid-density plasma-channel, clear quantum signatures of stochastic radiation emission manifest, disclosing a novel avenue to studying the quantized nature of photon ...
Arefiev, A. V., Gong, Z., Mackenroth, F.
core   +1 more source

Microengineering Laser Plasma Interactions at Relativistic Intensities

Physical Review Letters, 2016
We report on the first successful proof-of-principle experiment to manipulate laser-matter interactions on the microscale using highly ordered Si microwire arrays. The interaction of a high contrast short pulse laser with a flat target via periodic Si microwires yields a substantial enhancement in both total and cut-off energies of the produced ...
Jiang, S., Ji, L. L., Audesirk, H., George, K. M., Snyder, J., Krygier, A., Poole, P., Willis, C., Daskalova, R., Chowdhury, E., Lewis, N. S., Schumacher, D. W., Pukhov, A., Freeman, R. R., Akli, K. U.   +14 more
openaire   +5 more sources

Characterization of Macro/Microstructure and Corrosion Resistance of Austenitic Gas Tungsten Arc Welding Cladding

Advanced Engineering Materials, EarlyView.
Cladding is a proven method that boosts the surface qualities of mechanical parts by applying a layer of more durable material over a base substrate. This work responds to the needs of offshore and pressure vessels sectors by focusing on cladding a super austenitic steel onto low‐carbon steel through gas tungsten arc welding.
E. J. da Cruz Junior, F. M. F. A. Varasquim, F. O. Carvalho, L. F. F. Santiago, V. A. Ventrella, I. Calliari, M. Pigato   +6 more
wiley   +1 more source

Experimental observation of backscattered light based on different coherence between incident laser beams

High Power Laser Science and Engineering, 2013
Recent experimental results on NIF revealed a much higher stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) backscatter than expected; one possible reason was due to the coherence between incident laser beams.
Xiangfu Meng, Chen Wang, Honghai An, Guo Jia, Huazhen Zhou, Sizu Fu   +5 more
doaj   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Nuclear excitation by electron capture in optical-laser-generated plasmas

, 2018
The process of nuclear excitation by electron capture in plasma environments generated by the interaction of ultra-strong optical lasers with solid-state samples is investigated theoretically.
Gunst, Jonas, Keitel, Christoph H., Pálffy, Adriana, Wu, Yuanbin   +3 more
core   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source