Electric field dynamics and ion acceleration in the self-channeling of a superintense laser pulse
Anno: 2009
Autori: Macchi A., Ceccherini F., Cornolti F., Kar S., Borghesi M.
Affiliazione autori: CNR INFM, polyLAB, Pisa, Italy;
Univ Pisa, Dipartimento Fis Enrico Fermi, I-56127 Pisa, Italy;
Queens Univ Belfast, Sch Math & Phys, Belfast BT7 1NN, Antrim North Ireland
Abstract: The dynamics of electric field generation and radial acceleration of ions by a laser pulse of relativistic intensity propagating in an underdense plasma has been investigated using a one-dimensional electrostatic, ponderomotive model developed to interpret experimental measurements of electric fields (Kar S et al 2007 New J. Phys. 9 402). Ions are spatially focused at the edge of the charge-displacement channel, leading to hydrodynamical breaking, which in turn causes the heating of electrons and an ‘echo’ effect in the electric field. The onset of complete electron depletion in the central region of the channel leads to a smooth transition to a ‘Coulomb explosion’ regime and a saturation of ion acceleration.
Giornale/Rivista: PLASMA PHYSICS AND CONTROLLED FUSION
Volume: 51 (2) Da Pagina: 024005 A: 024005
Parole chiavi: laser-plasma interactions; self-focusing of laser beams; DOI: 10.1088/0741-3335/51/2/024005Citazioni: 17dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-21Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui