Role of target material in proton acceleration from thin foils irradiated by ultrashort laser pulses.
Phys Rev E Stat Nonlin Soft Matter Phys
; 90(2): 023103, 2014 Aug.
Article
in En
| MEDLINE
| ID: mdl-25215835
ABSTRACT
We report on the proton acceleration studies from thin metallic foils of varying atomic number (Z) and thicknesses, investigated using a 45 fs, 10 TW Tisapphire laser system. An optimum foil thickness was observed for efficient proton acceleration for our laser conditions, dictated by the laser ASE prepulse and hot electron propagation behavior inside the material. The hydrodynamic simulations for ASE prepulse support the experimental observation. The observed maximum proton energy at different thicknesses for a given element is in good agreement with the reported scaling laws. The results with foils of different atomic number Z suggest that a judicious choice of the foil material can enhance the proton acceleration efficiency, resulting into higher proton energy.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Protons
/
Radiation
/
Lasers
Language:
En
Journal:
Phys Rev E Stat Nonlin Soft Matter Phys
Journal subject:
BIOFISICA
/
FISIOLOGIA
Year:
2014
Document type:
Article
Affiliation country: