Investigation of driving plasma materials for laser acceleration of flyer plates

Labaste, Jean-Louis; Brisset, Didier; Doucet, Michel
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p1189
Academic Journal
An experimental and analytical study of thin laser-accelerated flyer plates in a confined geometry is presented. Its objective is to improve the coupling efficiency between the flyer kinetic energy and the laser energy. Performed with a 7 μm thick aluminum flyer integrated in a three-layered target using a Nd:YAG laser (1.06 μm wavelength and a pulse duration of 8 ns FWHM), this study consists in finding the best ablating material of the first layer, responsible for the plasma generation. Flyer velocities between 2 and 5.5 km/s have been achieved for the 1-7 GW/cm[SUP2] laser power density range. Best results yield coupling efficiencies of almost 50%.


Related Articles

  • Spatial Distribution of a Small Readily Ionized Additive in the Plasma of a Thermoelectronic Laser Energy Converter. Zherebtsov, V. A.; Kasikov, I. I. // Technical Physics Letters;Sep2005, Vol. 31 Issue 9, p719 

    The spatial distribution of a small additive of readily ionized atoms was studied in plasma of a continuous optical discharge (COD) between electrodes of a thermoelectronic laser energy converter. It is shown that the additive both in the equilibrium core of the COD and in nonequilibrium...

  • Pulsed-discharge-aided laser ablation synthesis of nanoscale aluminum nitride powders. Wang, P.N.; Pan, Q.; Cheung, N.H.; Chen, S.C. // Applied Physics A: Materials Science & Processing;1998, Vol. 67 Issue 2, p233 

    Abstract. Pulsed nitrogen (N[sub 2]) discharges were shown to efficiently generate atomic nitrogen that promoted the synthesis of high-purity aluminum nitride powders formed by pulsed-laser ablation of aluminum targets. The interaction between the nitrogen discharge plasma and the ablated...

  • Optical emission spectroscopy and time-of-flight investigations of plasmas generated from AlN targets in cases of pulsed laser deposition with sub-ps and ns ultraviolet laser pulses. Ristoscu, Carmen; Mihailescu, Ion N.; Velegrakis, Michalis; Massaouti, Maria; Klini, Argyro; Fotakis, Costas // Journal of Applied Physics;2/15/2003, Vol. 93 Issue 4, p2244 

    We performed a comparative study of the plasma generated from AlN targets under sub-ps vs ns UV (λ = 248 nm) excimer laser pulses. Optical emission and time-of-flight spectra recorded in cases of samples irradiated with ns laser pulses showed the presence of Al lines, which became prevalent...

  • Ablation scaling in steady-state ablation dominated by inverse-bremsstrahlung absorption. Ng, A.; Pasini, D.; Celliers, P.; Parfeniuk, D.; Da Silva, L.; Kwan, J. // Applied Physics Letters;1984, Vol. 45 Issue 10, p1046 

    The dependence of mass ablation rate and ablation pressure on laser wavelength and intensity have been measured for planar aluminum targets irradiated with 0.27-, 0.35-, and 0.53-μm laser pulses of 2-ns full width at half-maximum and at irradiances of 1012-5×1013 W/cm2. Target absorption...

  • High-Pressure, Laser-Driven Deformation of an Aluminum Alloy. McNaney, J. M.; Edwards, M. J.; Becker, R.; Lorenzo, K. T.; Remington, B. A. // Metallurgical & Materials Transactions. Part A;Sep2004, Vol. 35 Issue 9, p2625 

    Recent development of a laser-based experimental platform allows loading materials to high pressures in the solid state while controlling both strain rate and peak pressure. The drive utilizes momentum transfer from a plasma generated by the introduction of a strong shock in a reservoir of low-Z...

  • Enhanced K-shell x-ray line emissions from aluminum plasma created by a pair of femtosecond laser pulses. Nakano, Hidetoshi; Nishikawa, Tadashi; Uesugi, Naoshi // Applied Physics Letters;7/2/2001, Vol. 79 Issue 1, p24 

    The influence of an ultrashort prepulse on K-shell x-ray line emissions from Al plasma produced by 100 fs Ti:sapphire laser pulses is studied. By introducing an independent 100 fs prepulse, a more than 20-fold enhancement in K-shell emission was achieved. We could experimentally optimize K[sub...

  • Synthesis of nanoparticles in laser ablation of aluminum in liquid. Kumar, Bhupesh; Thareja, Raj K. // Journal of Applied Physics;Oct2010, Vol. 108 Issue 6, p064906 

    We report the synthesis of aluminum nanoparticles using pulsed laser ablation in water confined plasma. Nanoparticles have spherical shape and size distribution depends on laser fluence. Strong blue photoluminescence peaks at 405 nm (3.06 eV) and 430 nm (2.89 eV) due to oxygen deficient defects...

  • Response to “Comment on ‘Energy principle in the Boozer model’ ” [Phys. Plasmas 13, 024703 (2006)]. Pustovitov, V. D. // Physics of Plasmas;Feb2006, Vol. 13 Issue 2, p024704 

    The article presents a response from the author of the article "Energy Principle in the Boozer Model." According to the author, there are no assertions ascribed to him in the comments of the article. The author also reacts to the comment, which states that there is something wrong with the...

  • Self-focusing and filamentation of laser light in high Z plasmas. Jones, R. D.; Mead, W. C.; Coggeshall, S. V.; Aldrich, C. H.; Norton, J. L.; Pollak, G. D.; Wallace, J. M. // Physics of Fluids (00319171);May88, Vol. 31 Issue 5, p1249 

    Self-focusing and filamentation of short wavelength laser light in high Z plasmas of interest to laser fusion are discussed. It is found that self-focusing behavior is very dependent on the details of the characteristics of the laser beam, the plasma conditions, and the energy transport...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics