Interaction of crossed laser beams with plasmas

Eliseev, V. V.; Rozmus, W.; Tikhonchuk, V. T.; Capjack, C. E.

doi:10.1063/1.871703

Cited by 62 publications

(31 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since we mainly focus on the uniform or weak nonuniform density condition, and ignore the influence of weak non-uniform density on light waves, we do spatial envelop approximations in all directions of the three axes, which is not limited by paraxial approximation and feasible to simulate the propagation for the diagonal incident beams with a large angle is feasible. So our model is different from the existing models (Eliseev et al, 1996). Besides, the kinetic model of density perturbation (Strozzi et al, 2008) provides convenience to deal with the multi-ion species problem and the non-uniform conditions of temperature and flow velocity.…”

Section: Physical Modelmentioning

confidence: 99%

Study of crossed-beam energy transfer process with large crossing angle in three-dimension

Liang

Zheng

et al. 2016

Laser Part. Beams

View full text Add to dashboard Cite

In this paper, a three-dimensional (3D) model as a new module of LAP3D code is presented to study the crossed-beam energy transfer (CBET) process. This model is not limited by the paraxial approximation and can be used to deal with a large crossing angle case. Besides, this model is also appropriate for the multi-ion species conditions and even multibeams problems, which will be very helpful in relevant experiment analysis and the target design. In our 3D simulations, we take the overlapped beams with a 60°crossing angle as an example, and observe obvious energy transfer process, which indicates CBET process might occur between the incident laser beams with a large crossing angle when the matching condition is satisfied. This large crossing angle CBET process also can change the spatial shape of the beam spot, and may have some potential important influence on other laser-plasma interaction instabilities and the energy symmetry in hohlraum.

show abstract

Section: Physical Modelmentioning

confidence: 99%

Study of crossed-beam energy transfer process with large crossing angle in three-dimension

Liang

Zheng

et al. 2016

Laser Part. Beams

View full text Add to dashboard Cite

show abstract

“…On the other hand, if we consider the low frequency part of the ion momentum equation (2), we get, according to (23), (22):…”

Section: Lemma Let F and G Be Strictly Positive Functions Inmentioning

confidence: 99%

“…Nevertheless, numerical simulations based on this model have been performed for instance in [26] for small spatial domain, see also [23,42]; for a 2D large spatial domain where one has to handle some 10 8 cells and degrees of freedom, it is an interesting challenge of scientific computating (see [19]). …”

Section: Remark 1 On Numerical Simulationsmentioning

confidence: 99%

See 1 more Smart Citation

Mathematical models for laser-plasma interaction

Sentis¹

2005

ESAIM: M2AN

View full text Add to dashboard Cite

Abstract. We address here mathematical models related to the Laser-Plasma Interaction. After a simplified introduction to the physical background concerning the modelling of the laser propagation and its interaction with a plasma, we recall some classical results about the geometrical optics in plasmas. Then we deal with the well known paraxial approximation of the solution of the Maxwell equation; we state a coupling model between the plasma hydrodynamics and the laser propagation. Lastly, we consider the coupling with the ion acoustic waves which has to be taken into account to model the so called Brillouin instability. Here, besides the macroscopic density and the velocity of the plasma, one has to handle the space-time envelope of the main laser wave, the space-time envelope of the stimulated Brillouin backscattered laser wave and the space envelope of the Brillouin ion acoustic waves. Numerical methods are also described to deal with the paraxial model and the three-wave coupling system related to the Brillouin instability.Mathematics Subject Classification. 35Q55, 35Q60, 65M06, 34E20, 82D10.

show abstract

“…Lal et al have observed energy transfer between two λ = 10.6µm wavelength laser beams [11], but this was during a transient period on the order of a few acoustic periods, during which nonresonant energy transfer may occur [12,13]. These previous experiments were performed in subsonic plasmas.…”

mentioning

confidence: 99%