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Generation of collimated beams of relativistic ions in laser-plasma interactions |
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| Authors: | S. V. Bulanov T. Zh. Esirkepov F. Califano Y. Kato T. V. Liseikina K. Mima N. M. Naumova K. Nishihara F. Pegoraro H. Ruhl Y. Sentoku Y. Ueshima |
| Affiliation: | (1) Institute of General Physics, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 117942, Russia;(2) Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi, Moscow region, 141700, Russia;(3) INFM, Sez. A, 56126 Pisa, Italy;(4) APRC JAERI-Kansai, 619-0215 Kizu, Kyoto, Japan;(5) Institute of Computational Technologies, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia;(6) Institute of Laser Engineering, Osaka University, 565-0105 Osaka, Japan;(7) University of Pisa and INFM, 56126 Pisa, Italy;(8) TQE TH-Darmstadt, 64289 Darmstadt, Germany;(9) APRC JAERI-Kansai, Neyagawa, Osaka, 572, Japan |
| Abstract: | A method is proposed for generating collimated beams of fast ions in laser-plasma interactions. Two-dimensional and three-dimensional particle-in-cell simulations show that the ponderomotive force expels electrons from the plasma region irradiated by a laser pulse. The ions with unneutralized electric charge that remain in this region are accelerated by Coulomb repulsive forces. The ions are focused by tailoring the target and also as a result of pinching in the magnetic field produced by the electric current of fast ions. |
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