Proton emission from laser-generated plasmas at different intensities

Lorenzo Torrisi*, Mariapompea Cutroneo, Salvadore Cavallaro, Lorenzo Giuffrida, Daniele Margarone

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Proton acceleration from laser-generated plasma is carried out at intensities ranging between 10 10 and 10 19 W/cm 2, by using ns, ps and fs laser systems. The high energy density transferred from the pulsed laser beam into the solid target generates ionized species released in vacuum from the solid surface. Fast electrons followed by slower ions build up a double-layer and a consequent electric field, which is responsible for the ion acceleration mainly along the target-normal. Polymeric targets containing nanostructures (or metallic species) with high laser absorbing capacity, and metallic hydrates (or H-enriched metals), permit to increase the plasma temperature and density, thus to improve the proton beam energy and current. Thick targets and low laser intensities, operating in repetitive pulse, allows to generate high currents of low energy protons. On the other hand, through the use of thin targets and high laser intensities enabled the generation of high proton energies, above 1 MeV.

Original languageEnglish
Pages (from-to)237-240
Number of pages4
Issue number2
Publication statusPublished - 2011
Externally publishedYes

Bibliographical note

Copyright 2012 Elsevier B.V., All rights reserved.


  • Hydrogenated targets
  • Laser-generated plasma
  • Proton acceleration

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Instrumentation
  • Safety, Risk, Reliability and Quality
  • Condensed Matter Physics
  • Waste Management and Disposal


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