Laser-supported ionization wave in under-dense gases and foams

Gus'kov, S. Yu.; Limpouch, J.; Nicolaï, Ph.; Tikhonchuk, V. T.
October 2011
Physics of Plasmas;Oct2011, Vol. 18 Issue 10, p103114
Academic Journal
Propagation of laser-supported ionization wave in homogeneous and porous materials with a mean density less than the critical plasma density is studied theoretically in the one-dimensional geometry. It is shown that the velocity of the ionization wave in a foam is significantly decreased in comparison with the similar wave in a homogeneous fully ionized plasma of the same density. That difference is attributed to the ionization and hydro-homogenization processes forming an under-critical density environment in the front of ionization wave. The rate of energy transfer from laser to plasma is found to be in a good agreement with available experimental data.


Related Articles

  • Coupling of laser energy into plasma channels. Dimitrov, D. A.; Giacone, R. E.; Bruhwiler, D. L.; Busby, R.; Cary, J. R.; Geddes, C. G. R.; Esarey, E.; Leemans, W. P. // Physics of Plasmas;Apr2007, Vol. 14 Issue 4, p043105 

    Diffractive spreading of a laser pulse imposes severe limitations on the acceleration length and maximum electron energy in the laser wake field accelerator (LWFA). Optical guiding of a laser pulse via plasma channels can extend the laser-plasma interaction distance over many Rayleigh lengths....

  • Comparing experiments with modeling for light ion helicon plasma sources. Carter, M. D.; Baity, F. W.; Barber, G. C.; Goulding, R. H.; Mori, Y.; Sparks, D. O.; White, K. F.; Jaeger, E. F.; Chang-Dıaz, F. R.; Squire, J. P. // Physics of Plasmas;Dec2002, Vol. 9 Issue 12, p5097 

    The ability to obtain high plasma densities with high fractional ionization using readily available, low-cost components makes the helicon a candidate plasma source for many applications, including plasma rocket propulsion, fusion component testing, and materials processing. However, operation...

  • Laser-ablated loading of solid target through foams of overcritical density. De Angelis, R.; Consoli, F.; Gus'kov, S. Yu.; Rupasov, A. A.; Andreoli, P.; Cristofari, G.; Di Giorgio, G. // Physics of Plasmas;2015, Vol. 22 Issue 7, p1 

    The main objective of the work is to study the conversion of the laser pulse energy into the energy of the hydrodynamic motion of matter in a solid target following the initial absorption of laser radiation in a layer of porous material. Results of experiments on plane massive aluminum targets,...

  • Collisional energy transfer probabilities of highly excited molecules from kinetically controlled selective ionization (KCSI). I. The KCSI technique: Experimental approach for the determination of P(E[sup ′],E) in the quasicontinuous energy range. Hold, Uwe; Lenzer, Thomas; Luther, Klaus; Reihs, Karsten; Symonds, Andrew C. // Journal of Chemical Physics;3/1/2000, Vol. 112 Issue 9 

    The method of kinetically controlled selective ionization (KCSI) for investigating collisional energy transfer in highly vibrationally excited molecules is presented in detail. In this first paper of a series the focus is on the key concepts and the technical realization of KCSI experiments to...

  • Rotational relaxation in a free expansion of HCl. Rudich, Y.; Gordon, R. J.; Nikitin, E. E.; Naaman, R. // Journal of Chemical Physics;3/15/1992, Vol. 96 Issue 6, p4423 

    The rotational relaxation of HCl in a free jet expansion was studied in a pump-and-probe experiment using infrared laser excitation and resonant multiphoton ionization detection. Rate constants were determined for various J to J’ energy transfer processes in the vibrationally excited...

  • Delayed ionization following resonant photon absorption and intracluster electron transfer. Dao, P. D.; Castleman, A. W. // Journal of Chemical Physics;2/1/1986, Vol. 84 Issue 3, p1435 

    Ionization of clusters comprised of paraxylene (PX) bound to NH3 and N(CH3)3 is studied following the absorption of photons through the perturbed S1 state of PX. In the case of PX · NH3 where the ionization potential of PX (8.445 eV) lies below that of NH3 (10.16 eV), ionization of the...

  • Analysis of the ion energy distribution in a pulsed vacuum arc. Grondona, Diana; Kelly, He´ctor; Ma´rquez, Adriana // AIP Conference Proceedings;2001, Vol. 563 Issue 1, p61 

    The ion kinetic energy spectrum in a pulsed vacuum arc is presented. The arc current lasts for 35 ms (HAFW), having a peak value of 500 A. A retarding field analyzer system, (consisting in an aperture plate, a charge selecting grid and an energy analyzer collector electrode) and Langmuir probes...

  • Model of grain charging in collisional plasmas accounting for collisionless layer. D'yachkov, L. G.; Khrapak, A. G.; Khrapak, S. A.; Morfill, G. E. // Physics of Plasmas;Apr2007, Vol. 14 Issue 4, p042102 

    Grain charging in collision dominated plasmas is investigated. The transition from a thin collisionless region around the grain, ℓi(e)≲a, to a thick one, ℓi(e)>a, is studied under the assumptions ℓi(e)≲λD and a≲λD, where ℓi(e) is the ion...

  • Drifting localization of ionization runaway: Unraveling the nature of anomalous transport in high power impulse magnetron sputtering. Anders, André; Ni, Pavel; Rauch, Albert // Journal of Applied Physics;Mar2012, Vol. 111 Issue 5, p053304 

    The plasma over a magnetron's erosion 'racetrack' is not azimuthally uniform but concentrated in distinct dense ionization zones which move in the E×B direction with about 10% of the electron E×B/B2 drift velocity. The ionization zones are investigated with a gated camera working in...


Read the Article


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

Try another library?
Sign out of this library

Other Topics