Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Proton and Ion Beams Generated with Picosecond CO(2) Laser Pulses
AU - Pogorelsky, Igor
AU - Shkolnikov, Peter
AU - Chen, Min
AU - Pukhov, Alexander
AU - Yakimenko, Vitaly
AU - McKenna, Paul
AU - Carroll, David
AU - Neely, David
AU - Najmudin, Zulfikar
AU - Willingale, Louise
AU - Stolyarov, Daniil
AU - Stolyarova, Elena
AU - Flynn, George
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
KW - ion acceleration
KW - protons
KW - CO(2) laser
KW - spectrometer
KW - graphene
KW - LASER-PULSE
KW - ACCELERATION
KW - ABSORPTION
U2 - 10.1063/1.3080963
DO - 10.1063/1.3080963
M3 - Journal article
VL - 1086
SP - 532
EP - 537
JO - AIP Conference Proceedings
JF - AIP Conference Proceedings
SN - 0094-243X
T2 - 13th Advanced Accelerator Concepts Workshop
Y2 - 27 July 2008 through 2 August 2008
ER -