@article{Ravasio_2008_PP, author = {Ravasio, A. and others}, journal = {Physics of Plasmas}, month = {06}, number = {6}, pages = {060701}, title = {Hard x-ray radiography for density measurement in shock compressed matter}, volume = {15}, year = {2008}, abstract = {{In this letter we report on the direct density measurement in a shock compressed aluminum target using hard x-ray radiography. Experimental data employing a molybdenum Kα source at 17.5keV, generated with a short pulse laser are presented. High spatial resolution was obtained thanks to a new design for the backlighter geometry. Density values deduced from radiography are compared to predictions from hydrodynamic simulations, which have been calibrated in order to reproduce shock velocities measured from a rear-side self-emission diagnostic. Our results reveal the great potential of this technique as a diagnostic tool for direct density measurements in dense high-Z opaque materials.}}, doiurl = {10.1063/1.2928156}, issn = {1070-664X}, url = {https://doi.org/10.1063/1.2928156}, } @article{Li_2014_LP, author = {Li, K. and Borm, B. and Hug, F. and Khaghani, D. and Löher, B. and Savran, D. and Tahir, N. A. and Neumayer, P.}, journal = {Laser and Particle Beams}, number = {4}, pages = {631–637}, publisher = {Cambridge University Press}, title = {Developments toward hard X-ray radiography on heavy-ion heated dense plasmas}, volume = {32}, year = {2014}, doiurl = {10.1017/S0263034614000652}, } @article{Habs_2010_APB, author = {Habs, D. and Koester, Ulli}, journal = {Applied Physics B}, month = {05}, pages = {501-519}, title = {Production of Medical Radioisotopes with High Specific Activity in Photonuclear Reactions with γ Beams of High Intensity and Large Brilliance}, volume = {103}, year = {2010}, doiurl = {10.1007/s00340-010-4278-1}, } @article{Rosmej_2019_NJP, author = {O N Rosmej and others}, journal = {New Journal of Physics}, month = {apr}, number = {4}, pages = {043044}, publisher = {IOP Publishing}, title = {Interaction of relativistically intense laser pulses with long-scale near critical plasmas for optimization of laser based sources of MeV electrons and gamma-rays}, volume = {21}, year = {2019}, abstract = {Experiments were performed to study electron acceleration by intense sub-picosecond laser pulses propagating in sub-mm long plasmas of near critical electron density (NCD). Low density foam layers of 300–500 Ојm thickness were used as targets. In foams, the NCD-plasma was produced by a mechanism of super-sonic ionization when a well-defined separate ns-pulse was sent onto the foam-target forerunning the relativistic main pulse. The application of sub-mm thick low density foam layers provided a substantial increase of the electron acceleration path in a NCD-plasma compared to the case of freely expanding plasmas created in the interaction of the ns-laser pulse with solid foils. The performed experiments on the electron heating by a 100 J, 750 fs short laser pulse of 2–5В Г—В 1019 W cmв€’2 intensity demonstrated that the effective temperature of supra-thermal electrons increased from 1.5–2 MeV in the case of the relativistic laser interaction with a metallic foil at high laser contrast up to 13 MeV for the laser shots onto the pre-ionized foam. The observed tendency towards a strong increase of the mean electron energy and the number of ultra-relativistic laser-accelerated electrons is reinforced by the results of gamma-yield measurements that showed a 1000-fold increase of the measured doses. The experiment was supported by 3D-PIC and FLUKA simulations, which considered the laser parameters and the geometry of the experimental set-up. Both, measurements and simulations showed a high directionality of the acceleration process, since the strongest increase in the electron energy, charge and corresponding gamma-yield was observed close to the direction of the laser pulse propagation. The charge of super-ponderomotive electrons with energy above 30 MeV reached a very high value of 78 nC.}, doiurl = {10.1088/1367-2630/ab1047}, url = {https://dx.doi.org/10.1088/1367-2630/ab1047}, } @article{Rosmej_2020_PPCF, author = {O N Rosmej and others}, journal = {Plasma Physics and Controlled Fusion}, month = {oct}, number = {11}, pages = {115024}, publisher = {IOP Publishing}, title = {High-current laser-driven beams of relativistic electrons for high energy density research}, volume = {62}, year = {2020}, abstract = {We report on enhanced laser driven electron beam generation in the multi MeV energy range that promises a tremendous increase of the diagnostic potential of high energy sub-PW and PW-class laser systems. In the experiment, an intense sub-picosecond laser pulse of в€ј1019 Wcmв€’2 intensity propagates through a plasma of near critical electron density (NCD) and drives the direct laser acceleration (DLA) of plasma electrons. Low-density polymer foams were used for the production of hydrodynamically stable long-scale NCD-plasmas. Measurements show that relativistic electrons generated in the DLA-process propagate within a half angle of 2 В± 1В° to the laser axis. Inside this divergence cone, an effective electron temperature of 10–13 MeV and a maximum of the electron energy of 100 MeV were reached. The high laser energy conversion efficiency into electrons with energies above 2 MeV achieved 23% with a total charge approaching 1 ОјC. For application purposes, we used the nuclear activation method to characterize the MeV bremsstrahlung spectrum produced in the interaction of the high-current relativistic electrons with high-Z samples and measured top yields of gamma-driven nuclear reactions. The optimization of the high-Z target geometry predicts an ultra-high MeV photon number of в€ј1012 per shot at moderate relativistic laser intensity of 1019 Wcmв€’2. A good agreement between the experimental data and the results of the 3D-PIC and GEANT4-simulations was demonstrated.}, doiurl = {10.1088/1361-6587/abb24e}, url = {https://dx.doi.org/10.1088/1361-6587/abb24e}, } @article{Popov_2020, author = {Попов, В. С. and Гырдымов, М. and Розмей, О. Н. and Андреев, Н. Е. and Фортов, В. Е.}, journal = {Вестник ОИВТ РАН}, pages = {26-30}, volume = {4}, year = {2020}, language = {russian}, } @article{Gabovich_1955_UFN, author = {Габович, М. Д.}, journal = {Успехи физических наук}, number = {2}, pages = {215-256}, volume = {56}, year = {1955}, language = {russian}, } @article{Budker_1956_AE, author = {Будкер, Г. И.}, journal = {Атомная энергия}, number = {5}, pages = {9-19}, title = {Релятивистский стабилизированный электронный пучок}, volume = {1}, year = {1956}, language = {russian}, } @article{Harrison_1958_IJE, author = {Harrison, E. R.}, journal = {Journal of Electronics and Control}, number = {3}, pages = {193-200}, title = {On the Space-Charge Divergence of an Axially Symmetric Beam}, volume = {4}, year = {1958}, } @article{Lawson_1959_JNE, author = {Lawson, J.D.}, journal = {J. Nucl. Energy, Part C Plasma Phys.}, number = {1}, pages = {31-35}, title = {On the classification of electron streams}, volume = {1}, year = {1959}, } @article{Vallis_1974_UFN, author = {Валлис, Г. and Зауэр, К. and Зюндер, Д. and Росинский, С. Е. and Рухад\-зе, А. А. and Рухлин, В. Г.}, journal = {Успехи физических наук}, number = {7}, pages = {435-462}, title = {Инжекция сильноточных релятивистских электронных пучков в плазму и газ}, volume = {113}, year = {1974}, language = {russian}, } @book{Rudakov_1990, editor = {Рудаков, Л. И.}, publisher = {Энергоатомиздат}, title = {Генерация и фокусировка силь\-но\-точных релятивистских электронных пучков}, year = {1990}, language = {russian}, } @book{Lebedev_1991, author = {Лебедев, А. Н. and Шальнов, А. В.}, publisher = {Энергоатомиздат}, title = {Основы физики и техники ускорителей}, year = {1991}, language = {russian}, }