Abstract
Proton acceleration experiments using an intense ultraviolet laser were conducted for the first time. The laser system produced pulses having energies of up to 750 mJ at a wavelength of 248 nm with a temporal duration of 400 fs. Thin copper foils of 4 μm were used as targets, and the maximum intensity on the target was 1.3 × 1018 W/cm2. The highest energy of protons was 700 keV, which was observed when the laser beam was ppolarized and was incident on the target at an angle of 30°C . Fast electrons were generated by vacuum heating or resonance absorption because of the polarization dependence. These protons were accelerated in the target normal direction, which is suggestive of the target normal sheath acceleration mechanism (TNSA).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
