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Proton and Ion Beams Generated with Picosecond CO(2) Laser Pulses

Research output: Contribution to journalJournal article

Published
  • Igor Pogorelsky
  • Peter Shkolnikov
  • Min Chen
  • Alexander Pukhov
  • Vitaly Yakimenko
  • Paul McKenna
  • David Carroll
  • David Neely
  • Zulfikar Najmudin
  • Louise Willingale
  • Daniil Stolyarov
  • Elena Stolyarova
  • George Flynn
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<mark>Journal publication date</mark>2009
<mark>Journal</mark>AIP Conference Proceedings
Volume1086
Number of pages6
Pages (from-to)532-537
Publication statusPublished
Early online date22/01/09
Original languageEnglish
Event13th Advanced Accelerator Concepts Workshop - Santa Cruz, United States
Duration: 27/07/20082/08/2008

Conference

Conference13th Advanced Accelerator Concepts Workshop
CountryUnited States
CitySanta Cruz
Period27/07/082/08/08

Abstract

I-TW, 6-ps, circularly polarized CO(2) laser pulses focused onto thin Al foils are used to drive ion acceleration. The spectra of ions and protons generated in the direction normal to the rear surface, detected with a compact magnet spectrometer with CR39, reveals a broad proton high-energy peak at similar to 1 MeV. This observation conforms to the theoretical predictions that circularly polarized laser pulses are less efficient than linearly polarized pulses in driving ion acceleration via the Target Normal Sheath Acceleration (TNSA) mechanism. Instead, there is evidence that the circularly polarized laser may provide direct ponderomotive acceleration of ions and protons. We report also the first application of the BNL proton source in nano-science. Irradiation of graphite and graphene films produced local defects and membranes for variety of applications.