Results 31 to 40 of about 45,819 (239)

Visualization of the homogeneous charge compression ignition/controlled autoignition combustion process using two-dimensional planar laser-induced fluorescence imaging of formaldehyde [PDF]

, 2003
The paper reports an investigation into the HCCI/CAI combustion process using the two-dimensional PLIF technique. The PLIF of formaldehyde formed during the low-temperature reactions of HCCI/CAI combustion was exciting by a tunable dye laser at 355nm ...
Bäuerle B., H Zhao, N Ladommatos, Z Peng   +3 more
core   +1 more source

National Ignition Facility laser performance status

Applied Optics, 2007
The National Ignition Facility (NIF) is the world's largest laser system. It contains a 192 beam neodymium glass laser that is designed to deliver 1.8 MJ at 500 TW at 351 nm in order to achieve energy gain (ignition) in a deuterium-tritium nuclear fusion target.
C A, Haynam, P J, Wegner, J M, Auerbach, M W, Bowers, S N, Dixit, G V, Erbert, G M, Heestand, M A, Henesian, M R, Hermann, K S, Jancaitis, K R, Manes, C D, Marshall, N C, Mehta, J, Menapace, E, Moses, J R, Murray, M C, Nostrand, C D, Orth, R, Patterson, R A, Sacks, M J, Shaw, M, Spaeth, S B, Sutton, W H, Williams, C C, Widmayer, R K, White, S T, Yang, B M, Van Wonterghem   +27 more
openaire   +3 more sources

Experimental Study of Ignition over Impact-Driven Supersonic Liquid Fuel Jet

Advances in Mechanical Engineering, 2013
This study experimentally investigates the mechanism of the ignition of the supersonic liquid fuel jet by the visualization. N-Hexadecane having the cetane number of 100 was used as a liquid for the jet in order to enhance the ignition potential of the ...
Anirut Matthujak, Kulachate Pianthong, Kazuyoshi Takayama, B. E. Milton   +3 more
doaj   +1 more source

Three-dimensional simulations of laser-plasma interactions at ultrahigh intensities [PDF]

, 2011
Three-dimensional (3D) particle-in-cell (PIC) simulations are used to investigate the interaction of ultrahigh intensity lasers ($> 10^{20}$ W/cm$^{-2}$) with matter at overcritical densities.
Fiuza, F., Fonseca, R. A., May, J., Mori, W. B., Silva, L. O., Tonge, J.   +5 more
core   +2 more sources

Focus issue introduction: Laser Ignition Conference

Optics Express, 2014
The purpose of this feature issue is to share information on laser ignition and related sciences and technologies. This feature offers five papers in the field that cover aspects of laser-induced laser ignition, including novel giant pulse micro-lasers, new phenomena of laser breakdown, advanced combustion systems and applications.
Takunori, Taira, Hirohide, Furutani, Chunlei, Guo, Ernst, Wintner, Fumiteru, Akamatsu, Robert, Lucht, Kunihiko, Washio   +6 more
openaire   +2 more sources

Fast ignition of inertial fusion targets by laser-driven carbon beams

, 2009
Two-dimensional simulations of ion beam driven fast ignition are presented. Ignition energies of protons with Maxwellian spectrum and carbon ions with quasimonoenergetic and Maxwellian energy distributions are evaluated.
B. M. Hegelich, Honrubia J. J., J. C. Fernández, J. J. Honrubia, J. Meyer-ter-Vehn, M. Temporal   +5 more
core   +1 more source

Dielectric Barrier Discharge Plasma Deoxidation of Natively Oxide Layer of Copper Powders in a Fluidized Bed

Advanced Engineering Materials, EarlyView.
This paper presents a novel approach to reducing oxide layers on metal powders using low‐temperature hydrogen dielectric barrier discharge plasmas at atmospheric pressure. Unlike conventional hydrogen‐plasma reductions, the powders do not contact the plasma directly.
Shukang Zhang, Annett Wollmann, Thomas Gimpel, Alfred P. Weber   +3 more
wiley   +1 more source

Ignition Characteristics of GH2/GOx Mixture Using Laser Ablation Ignition

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, 2002
The characteristics of a laser ablation igniter were investigated systematically. This kind of igniter is expected to realize a lightweight rocket engine system that consists of many combustion chambers, such as the Reaction Control System (RCS), without having heavy spark igniters. In this igniter, ignition is accomplished utilizing a high-temperature
Koichi Mori, Kazuo Kusaka, Kazuhisa Fujita, Masayuki Niino, Viliam Kmetik, Masakatsu Nakano, Hideaki Takahashi, Shoji Nakajima, Yoshihiro Arakawa   +8 more
openaire   +2 more sources

Photon Avalanching Nanoparticles: The Next Generation of Upconverting Nanomaterials?

Advanced Functional Materials, EarlyView.
This Perspective outlines the mechanistic foundations that enable photon‐avalanche (PA) behavior in lanthanide nanomaterials and contrasts them with emerging application spaces and forward‐looking design strategies. By bridging threshold engineering, energy‐transfer dynamics, and materials engineering, we provide a coherent roadmap for advancing the ...
Kimoon Lee, Yunseo Kim, Hyeong‐ku Jo, Dongjoon Yoon, Byeonghyeok Im, WonJeong Yu, Eui‐Rim On, Changhwan Lee   +7 more
wiley   +1 more source

Hydrodynamic modeling and simulations of shock ignition thresholds

EPJ Web of Conferences, 2013
The Shock Ignition (SI) scheme [1] offers to reduce the laser requirements by relaxing the implosion phase to sub-ignition velocities and later adding an intense laser spike.
Lafon M., Ribeyre X., Schurtz G., Le Bel E.   +3 more
doaj   +1 more source