Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

An experimental study on protons from a 7 μm thick copper foil target irradiated by femtosecond laser pulses has been carried out. In the SILEX-I femtosecond laser device, the proton energy spectra are measured at the different laser energies and laser power densities and at the same pulse width of 30 fs. Results show that the protons are emitted in the normal direction of the target back and have a certain cut-off energy. Along with the increase of the proton energy, the proton beams exponentially decay. For the same 7 μm thick Cu target, the greater the laser energy is, the stronger the proton beams are. With the increase of the laser power density, the cut-off energy of protons increases.

Original publication

DOI

10.3788/HPLPB20122410.2335

Type

Journal article

Journal

Qiangjiguang Yu Lizishu/High Power Laser and Particle Beams

Publication Date

01/10/2012

Volume

24

Pages

2335 - 2337