| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
|
|
|
|
Laser-Induced Particle Jet and Its Ignition Application in Premixed Combustible Gases |
| YANG Qian-Suo, LIU Chun, PENG Zhi-Min, ZHU Nai-Yi |
| Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190 |
|
| Cite this article: |
|
YANG Qian-Suo, LIU Chun, PENG Zhi-Min et al 2009 Chin. Phys. Lett. 26 065204 |
|
|
|
|
Abstract A hot particle jet is induced as a laser pulse from a free oscillated Nd:YAG laser focused on a coal target. The particle jet successfully initiates combustion in a premixed combustible gas consisting of hydrogen, oxygen, and air. The experiment reveals that the ionization of the particle jet is enhanced during the laser pulse. This characteristic is attributed to the electron cascade process and the ionization of the particles or molecules of the target. The initial free electrons, which are ablated from the coal target, are accelerated by the laser pulse through the inverse Bremsstrahlung process and then collide with the neutrals in the jet, causing the latter to be ionized.
|
| Keywords:
52.70.Kz
52.50.Jm
52.25.Jm
52.38.Dx
|
|
|
Received: 16 February 2009
Published: 01 June 2009
|
|
| PACS: |
52.70.Kz
|
(Optical (ultraviolet, visible, infrared) measurements)
|
| |
52.50.Jm
|
(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
|
| |
52.25.Jm
|
(Ionization of plasmas)
|
| |
52.38.Dx
|
(Laser light absorption in plasmas (collisional, parametric, etc.))
|
|
|
|
|
|
[1] Shen Y R 1984 The Principle of Nonlinear Optics (NewYork: John Wiley {\& Sons) chap 27 p 528
[2] Grey-Morgan C 1975 Rep. Prog. Phys. 38 621
[3] Kennedy P K, Hammer D X and Rockwell B A 1997 Prog.Quantum Electron. 21 155
[4] Phuoc T X 2006 Optics and Lasers in Engin. 44351
[5] Xu B, Song R G, Dai L N and Deng X L 2006 Optoelectron. Technol. 26 138 (in Chinese)
[6] Dyer P E, Greenough R D, Issa A and Key P H 1988 Appl. Phys. Lett. 53 534
[7] Miu D, Grigoriu C, Dragulinescu D and Chis I 1996 Opt. Engin. 35 1325
[8] Kailasanath K 2003 J. AIAA 41 145 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
