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Laser-accelerated protons with energy dependent beam direction

Författare:
Publiceringsår: 2005
Språk: Engelska
Sidor: 175002-1-175002-4
Publikation/Tidskrift/Serie: Physical Review Letters
Volym: 95
Nummer: 175002
Dokumenttyp: Artikel
Förlag: American Physical Society

Sammanfattning

The spatial distribution of protons, accelerated by intense femtosecond laser pulses interacting with thin target foils under oblique irradiation are investigated. Under certain conditions, the proton beams are directed away from the target normal. This deviation is towards the laser forward direction, with an angle that increases with the level and duration of the amplified spontaneous emission pedestal before the main laser pulse. In addition, for a given laser pulse, this beam deviation increases with proton energy. The observations are discussed in terms of different electron acceleration mechanisms and target normal sheath acceleration, in combination with a laser-controllable shock wave locally deforming the target rear surface.

Disputation

Nyckelord

  • Physics and Astronomy

Övriga

Published
Yes
  • ISSN: 0031-9007

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