scholarly journals Laser triggered micro-lens for focusing and energy selection of MeV protons

2007 ◽  
Vol 25 (1) ◽  
pp. 71-77 ◽  
Author(s):  
O. WILLI ◽  
T. TONCIAN ◽  
M. BORGHESI ◽  
J. FUCHS ◽  
E. D'HUMIÈRES ◽  
...  
Keyword(s):  
Thin Foil ◽  
Radial Electric Field ◽  
Laser Pulses ◽  
Outer Wall ◽  
Relativistic Electrons ◽  
Hot Plasma ◽  
Foil Target ◽  
Mev Protons ◽  
Micro Lens ◽  
Selection Of

We present a novel technique for focusing and energy selection of high-current, MeV proton/ion beams. This method employs a hollow micro-cylinder that is irradiated at the outer wall by a high intensity, ultra-short laser pulse. The relativistic electrons produced are injected through the cylinder's wall, spread evenly on the inner wall surface of the cylinder, and initiate a hot plasma expansion. A transient radial electric field (107–1010 V/m) is associated with the expansion. The transient electrostatic field induces the focusing and the selection of a narrow band component out of the broadband poly-energetic energy spectrum of the protons generated from a separate laser irradiated thin foil target that are directed axially through the cylinder. The energy selection is tunable by changing the timing of the two laser pulses. Computer simulations carried out for similar parameters as used in the experiments explain the working of the micro-lens.

Towards Sub-TeV electron beams driven by ultra-short, ultra-intense laser pulses

2012 ◽  
Vol 78 (4) ◽  
pp. 461-468 ◽  
Author(s):  
WEI-MIN WANG ◽  
ZHENG-MING SHENG ◽  
SHIGEO KAWATA ◽  
CHUN-YANG ZHENG ◽  
YU-TONG LI ◽  
...  
Keyword(s):  
Laser Intensity ◽  
Electron Beams ◽  
Energetic Electron ◽  
Thin Foil ◽  
Laser Pulses ◽  
Intense Laser ◽  
Particle In Cell ◽  
Intense Laser Pulses ◽  
Laser Focus ◽  
Foil Target

AbstractEnergetic electron beam generation from a thin foil target by the ponderomotive force of an ultra-intense circularly polarized laser pulse is investigated. Two-dimensional particle-in-cell (PIC) simulations show that laser pulses with intensity of 1022–1023 Wcm−2 generate about 1–10 GeV electron beams, in agreement with the prediction of one-dimensional theory. When the laser intensity is at 1024–1025 Wcm−2, the beam energy obtained from PIC simulations is lower than the values predicted by the theory. The radiation damping effect is considered, which is found to become important for the laser intensity higher than 1025 Wcm−2. The effect of laser focus positions is also discussed.

Ion acceleration by the 1021 Wcm−2 intensity high contrast laser pulses interacting with the thin foil target

CLEO: 2014 ◽  
2014 ◽  
Author(s):  
M. Nishiuchi ◽  
H. Sakaki ◽  
K. Nishio ◽  
H. Sako ◽  
T. A. Pikuz ◽  
...  
Keyword(s):  
Thin Foil ◽  
Laser Pulses ◽  
Ion Acceleration ◽  
High Contrast ◽  
Foil Target

High flux of relativistic electrons produced in femtosecond laser-thin foil target interactions: Characterization with nuclear techniques

2008 ◽  
Vol 79 (2) ◽  
pp. 023504 ◽  
Author(s):  
M. Gerbaux ◽  
F. Gobet ◽  
M. M. Aléonard ◽  
F. Hannachi ◽  
G. Malka ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Thin Foil ◽  
Relativistic Electrons ◽  
High Flux ◽  
Nuclear Techniques ◽  
Foil Target

ENERGETIC PROTON ACCELERATION BY ULTRAINTENSE LASER PULSES IN INHOMOGENEOUS PLASMA TARGETS

2007 ◽  
Vol 21 (03n04) ◽  
pp. 642-646 ◽  
Author(s):  
A. ABUDUREXITI ◽  
Y. MIKADO ◽  
T. OKADA
Keyword(s):  
Laser Pulse ◽  
Inhomogeneous Plasma ◽  
Laser Pulses ◽  
Proton Acceleration ◽  
Particle In Cell ◽  
Target Plasma ◽  
Plasma Target ◽  
Experimental Process ◽  
Foil Target ◽  
Proton Bunch

Particle-in-Cell (PIC) simulations of fast particles produced by a short laser pulse with duration of 40 fs and an intensity of 1020W/cm2 interacting with a foil target are performed. The experimental process is numerically simulated by considering a triangular concave target illuminated by an ultraintense laser. We have demonstrated increased acceleration and higher proton energies for triangular concave targets. We also determined the optimum target plasma conditions for maximum proton acceleration. The results indicated that a change in the plasma target shape directly affects the degree of contraction accelerated proton bunch.

Effect of temporally modified ultra-short laser pulses on ion acceleration from thin foil targets

2018 ◽  
Vol 25 (8) ◽  
pp. 083113 ◽  
Author(s):  
M. Tayyab ◽  
S. Bagchi ◽  
J. A. Chakera ◽  
R. A. Khan ◽  
P. A. Naik
Keyword(s):  
Thin Foil ◽  
Laser Pulses ◽  
Ion Acceleration ◽  
Short Laser Pulses

scholarly journals Laser ion acceleration in thin foil target

2014 ◽  
Author(s):  
Chengkun Huang ◽  
Brian J. Albright ◽  
Sasikumar Palaniyappan ◽  
Lin Yin
Keyword(s):  
Thin Foil ◽  
Ion Acceleration ◽  
Foil Target

scholarly journals Observation of Preformed Plasma Generated from a Thin-Foil Target for Laser-Driven Proton Acceleration

2014 ◽  
Vol 42 (2) ◽  
pp. 160
Author(s):  
Akito SAGISAKA ◽  
Alexander S. PIROZHKOV ◽  
Mamiko NISHIUCHI ◽  
Koichi OGURA ◽  
Hironao SAKAKI ◽  
...  
Keyword(s):  
Thin Foil ◽  
Proton Acceleration ◽  
Foil Target ◽  
Preformed Plasma
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