Propagation issues and fast particle source characterization in laser-plasma interactions at intensities exceeding 10(19) W/cm(2)
Anno: 2001
Autori: Borghesi M., Campbell HD., Galimberti M., Gizzi LA., Mackinnon AJ., Nazarov W., Schiavi A., Willi O.
Affiliazione autori: Queens Univ Belfast, Belfast BT7 1NN, Antrim, North Ireland; CNR, IFAM, Pisa, Italy
Abstract: A series of experiments recently carried out at the Rutherford Appleton Laboratory investigated various aspects of the laser-plasma interaction in the relativistic intensity regime. The propagation of laser pulses through preformed plasmas was studied at intensities exceeding 10(19) W/cm(2). The transmission of laser energy through long scale underdense plasmas showed to be inefficient unless a plasma channel is preformed ahead of the main laser pulse. The study of the interaction with overdense plasmas yielded indication of propagation at densities above the critical density, possible due to relativistic effects. The production of fast particles during the interaction with solid density targets was also investigated. The measurements revealed the presence of a small-sized directional source of multi-MeV protons, which was not observed when a plasma was preformed at the back of the solid target. The properties of the source are promising in view of its use in radiographic imaging of dense matter, and preliminary tests were carried out.
Giornale/Rivista: PROCEEDINGS OF SPIE
Volume: 4424 Da Pagina: 414 A: 417
Parole chiavi: laser-plasma interactionDOI: 10.1117/12.425646Citazioni: 2dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-04-28Riferimenti 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