>ITFIP>Fusion
Inertial fusion
Theoretical studies of microscopic properties of dense strongly correlated plasmas and of particle beam transport are performed beyond the limit of validity of standard theory. Numerous results have been obtained by the group in the period 20042008, as shown by the publication list, most of them in the frame of international collaborations. The main results can be summarised as follows:
1Beam plasma instabilities
(A. Bret (LPGP et CiudadReal), C. Deutsch, MC. Firpo (LPTPPalaiseau), P. Fromy (CRIOrsay)
Studies of the linear and quasilinear growth of electromagnetic instabilities during the interaction of relativistic electron beams or nonrelativistic proton beams with ultradense plasmas of interest for the fast ignition scheme of inertial fusion have been performed analytically and confirmed with PIC simulations at CEADAM, as shown in figure 3. These instabilities may be an issue for the fast ignition scheme and their initial, linear growth is difficult to detect in a PIC simulation. Main results are about the damping of filamentation by electron collisions in the target for wavelengths of the order of the electronic skin depth. By combining analytically the 3 main instabilities (Weibel, Filamentation and Doublecurrent) it was possible to determine that their fastest growth occurs in a region at an angle compared to the initial beam axis, which had not been seen in previous analysis. [89, 146, 148, 156, 213]
2WDM created by heavy ion beams
(C. Deutsch, N.A.Tahir et D.H.H.Hoffmann (GSI), A.R.Piriz et G.Wouchuk (CiudadReal), V.E.Fortov et I.V.Lomonosov (Chernogolovska))
Theoretical studies are undertaken to anticipate future experiments at very high energy at GSIDarmstadt, and at very low energy, close to the Braggpeak at LBNLBerkeley. C. Deutsch is part of the project HEDgeHOB (European network) dedicated to the study of strongly correlated plasmas at solid density and heated to 1 10 eV (WDM). A code based on the stopping power in cold solid or dense plasma combined to hydrodynamic studies of the target taking into account RayleighTaylor et RichmayerMashkov instabilities is under development [57, 59, 126, 128, 192].
3Stopping power of nonrelativistic ions and relativistic electrons in ultradense targets:
(C. Deutsch, C. Cereceda (USBCaracas), K.V. Starikov et B. Tashev (KazNuAlmaty), M.D. BarrigaCarrasco (UCiudadReal), R. Popoff, G. Maynard, J. Vassaux)
These studies include calculations for the final phase of fast ignition as well as for intense ion beams inside cold or warm matter for the production of WDM. Particular attention is given to arbitrary magnetised plasmas or with several ion components [150, 188, 65, 52]. Laser produced energetic ion sources have created a renewed interest for ionplasma interaction studies. The ITFIP group collaborates with the LULI and the CPHT, in the frame of the ELAHI project, supported by the ANR, to the study of energy loss inside WDM created by ion beams. The PhD project of A. Lenglet consisted in a fundamental study, through the direct resolution of time dependent Schroedinger equation in the case of strong interactions close to the semiclassical limit. An innovative variational method for wavepacket dynamics has been used to calculate the stopping power and the interaction laseratom at high intensity. The wave packet is described by a set of HermiteGauss functions. The great advantage of this method is that it can be used to describe the transition from the perturbative regime to the strong perturbations [44].
The group has also contributed to original topics such as space propulsion driven by matter antimatter annihilation [85] and processes of nonlocal transport in gases [68].
4References
[44] 
A. Lenglet and G. Maynard, Wave Packet Molecular Dynamics to Study Atom Electrons in Strong Fields, Nucl. Instrum. Meth. Phys. Res. A 577, 343 (2007). 
[52] 
R. Popoff and C. Deutsch, Energy Loss and Multiple Scattering of Light Ions in Dense and Strongly Magnetized Plasma, Nucl. Instrum. Meth. Phys. Res. A 577, 361 (2007). 
[57] 
N. A. Tahir, A. R. Piriz, A. Shutov, I. V. Lomonosov, V. Gryaznov, G. Wouchuk, C. Deutsch, P. Spiller, V. E. Fortov, D. H. H. Hoffmann, and R. Schmidt, Survey of Theoretical Work for the Proposed Hedgehob Experimental Schemes: Hihex and Laplas, Contrib. Plasma Phys. 47, 223 (2007). 
[59] 
N. A. Tahir, P. Spiller, A. Shutov, I. V. Lomonosov, V. Gryaznov, A. R. Piriz, G. Wouchuk, C. Deutsch, V. E. Fortov, D. H. H. Hoffmann, and R. Schmidt, Hedgehob: HighEnergy Density Matter Generated by Heavy Ion Beams at the Future Facility for Antiprotons and Ion Research, Nucl. Instrum. Meth. Phys. Res. A 577, 238 (2007). 
[65] 
M. D. BarrigaCarrasco and C. Deutsch, Plasma Wake and Nuclear Forces on FragmentedH2(+) Transport, Plasma Phys. Control. Fusion 48, 1787 (2006). 
[68] 
A. Bendib, K. BendibKalache, M. M. Gombert, and N. Imadouchene, Generalized Linear Transport Theory in Dilute Neutral Gases and Dispersion Relation of Sound Waves, Phys. Rev. E 74, 041204 (2006). 
[89] 
M. C. Firpo, A. F. Lifschitz, E. Lefebvre, and C. Deutsch, Early outofEquilibrium BeamPlasma Evolution, Phys. Rev. Lett. 96, 115004 (2006). 
[126] 
N. A. Tahir, I. V. Lomonosov, A. Shutov, S. Udrea, C. Deutsch, E. Fortov, V. Gryaznov, D. H. H. Hoffmann, J. Jacobi, V. Kain, M. Kuster, P. Ni, A. R. Piriz, R. Schmidt, P. Spiller, D. Varentsov, and K. Zioutas, Proposed Studies of Strongly Coupled Plasmasat the Future Fair and Lhc Facilities: The Hedgehob Collaboration, J. Phys. AMath. Gen. 39, 4755 (2006). 
[128] 
N. A. Tahir, P. Spiller, S. Udrea, O. D. Cortazar, C. Deutsch, V. E. Fortov, V. Gryaznov, D. H. H. Hoffmann, I. V. Lomonosov, P. Ni, A. R. Piriz, A. Shutov, M. Temporal, and D. Varentsov, Studies of Equation of State Properties of HighEnergy Density Matter Using Intense Heavy Ion Beams at the Future Fair Facility: The Hedgehob Collaboration, Nucl. Instrum. Meth. Phys. Res. B 245, 85 (2006). 
[146] 
A. Bret, M. C. Firpo, and C. Deutsch, Electromagnetic Instabilities for Relativistic BeamPlasma Interaction in Whole K Space: Nonrelativistic Beam and Plasma Temperature Effects, Phys. Rev. E 72, 016403 (2005). 
[148] 
A. Bret, M. C. Firpo, and C. Deutsch, Characterization of the Initial Filamentation of a Relativistic Electron Beam Passing through a Plasma, Phys. Rev. Lett. 94, 115002 (2005). 
[150] 
C. Cereceda, M. de Peretti, and C. Deutsch, Stopping Power for Arbitrary Angle between Test Particle Velocity and Magnetic Field, Phys. Plasmas 12, 022102 (2005). 
[156] 
C. Deutsch, A. Bret, M. C. Firpo, and P. Fromy, Interplay of Collisions with Quasilinear Growth Rates of Relativistic ElectronBeamDriven Instabilities in a Superdense Plasma, Phys. Rev. E 72, 026402 (2005). 
[188] 
K. V. Starikov and C. Deutsch, Stopping of Relativistic Electrons in a Partially Degenerate Electron Fluid, Phys. Rev. E 71, 026407 (2005). 
[192] 
N. A. Tahir, C. Deutsch, V. E. Fortov, V. Gryaznov, D. H. H. Hoffmann, M. Kulish, I. V. Lomonosov, V. Mintsev, P. Ni, D. Nikolaev, A. R. Piriz, N. Shilkin, P. Spiller, A. Shutov, M. Temporal, V. Ternovoi, S. Udrea, and D. Varentsov, Proposal for the Study of Thermophysical Properties of HighEnergyDensity Matter Using Current and Future HeavyIon Accelerator Facilities at Gsi Darmstadt, Phys. Rev. Lett. 95, 035001 (2005). 
[213] 
A. Bret, M. C. Firpo, and C. Deutsch, Collective Electromagnetic Modes for BeamPlasma Interaction in the Whole K Space, Phys. Rev. E 70, 046401 (2004). 
