Results 41 to 50 of about 115,913 (266)

Plasma Expansion in Laser-Target Interaction Process [PDF]

مجله علوم و فنون هسته‌ای, 2012
In this paper, the behavior of temperature, density, velocity and pressure of the plasma shock front produced by the interaction of a focused Nd:YAG laser beam on a copper target, with an average pulsewidth of 30ns and 140mJ laser energy, have been ...
A.H Farahbod, M Afshari, E Agayari
doaj  

Identification of Coupling Mechanisms between Ultraintense Laser Light and Dense Plasmas

Physical Review X, 2019
The interaction of intense laser beams with plasmas created on solid targets involves a rich nonlinear physics. Because such dense plasmas are reflective for laser light, the coupling with the incident beam occurs within a thin layer at the interface ...
L. Chopineau, A. Leblanc, G. Blaclard, A. Denoeud, M. Thévenet, J-L. Vay, G. Bonnaud, Ph. Martin, H. Vincenti, F. Quéré   +9 more
doaj   +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

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

The influence of plasma density decreasement by pre-pulse on the laser wakefield acceleration

AIP Advances, 2011
In the laser wakefield acceleration, the generation of electron beam is very sensitive to the plasma density. Not only the laser-wakefield interaction, but also the electron trapping and acceleration would be effected by the plasma density.
Ke-Gong Dong, Yu-Chi Wu, Bin Zhu, Ying-Ling He, Wei-Min Zhou, Lei-Feng Cao, Hong-Jie Liu, Zong-Qing Zhao, Xian-Lun Wen, Chun-Ye Jiao, Wei Hong, Yu-Qiu Gu, Bao-Han Zhang, Xiao-Fang Wang   +13 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Characterization of electron beam generated in ignitor-plasma interaction of shock ignition concept [PDF]

مجله علوم و فنون هسته‌ای, 2015
Generally, laser ignitior parameters in shock ignition concept are above the threshold for laser-plasma instability and therefore are prompting the generation of fast electrons.
Somayeh Rezaei, Amirhossein Farahbod, Mohammadjafar Jafari, Samad Sobhanian   +3 more
doaj  

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

A Dislocation Perspective on Strength and Toughness in Ceramics

Advanced Engineering Materials, EarlyView.
Dislocations in ceramics enjoy a long but yet under‐appreciated history. The three research waves for dislocations in ceramics highlight the topic evolution over the last 90 years. This review focuses on the impact of dislocation on strength and toughness in ceramics.
Xufei Fang
wiley   +1 more source