Control of proton beam divergence in intense-laser foil-plasma interaction

2006 ◽  
Vol 133 ◽  
pp. 549-551 ◽  
Author(s):  
S. Kawata ◽  
R. Sonobe ◽  
S. Miyazaki ◽  
K. Sakai ◽  
T. Kikuchi
Keyword(s):  
Proton Beam ◽  
Beam Divergence ◽  
Intense Laser ◽  
Plasma Interaction

Collimation of laser-driven energetic protons in a capillary

2012 ◽  
Vol 78 (4) ◽  
pp. 333-337
Author(s):  
D.-P. CHEN ◽  
Y. YIN ◽  
Z.-Y. GE ◽  
H. XU ◽  
H.-B. ZHUO ◽  
...  
Keyword(s):  
Proton Beam ◽  
Electron Flow ◽  
Laser Pulses ◽  
Hot Electrons ◽  
Beam Divergence ◽  
Intense Laser ◽  
Particle In Cell ◽  
Intense Laser Pulses ◽  
Electric And Magnetic Fields ◽  
Set Up

AbstractEnergetic divergent proton beams can be generated in the interaction of ultra-intense laser pulses with solid-density foil targets via target normal sheath acceleration (TNSA). In this paper, a scheme using a capillary to reduce the proton beam divergence is proposed. By two-dimensional particle-in-cell (PIC) simulations, it is shown that strong transverse electric and magnetic fields rapidly grow at the inner surface of the capillary when the laser-driven hot electrons propagate through the target and into the capillary. The spontaneous magnetic field collimates the electron flow, and the ions dragged from the capillary wall by hot electrons neutralize the negative charge and thus restrain the transverse extension of the sheath field set up by electrons. The proton beam divergence, which is mainly determined by the accelerating sheath field, is therefore reduced by the transverse limitation of the sheath field in the capillary.

Effects of ultra-intense laser driven proton beam on the hydriding property of palladium

2013 ◽  
Vol 307 ◽  
pp. 218-220 ◽  
Author(s):  
Hiroshi Abe ◽  
Satoshi Orimo ◽  
Masahiko Kishimoto ◽  
Shigeo Aone ◽  
Hirohisa Uchida ◽  
...  
Keyword(s):  
Proton Beam ◽  
Intense Laser

Super-Intense Laser-Plasma Interaction in Real-World Applications

2017 ◽  
pp. 15-23
Author(s):  
Andrey Savel’ev ◽  
Konstantin Ivanov ◽  
Roman Volkov ◽  
Sergei Shulyapov ◽  
Ivan Tsymbalov ◽  
...  
Keyword(s):  
Real World ◽  
Laser Plasma ◽  
Intense Laser ◽  
Plasma Interaction ◽  
Laser Plasma Interaction ◽  
Real World Applications

scholarly journals Quantitative Kα line spectroscopy for energy transport in ultra-intense laser plasma interaction

2016 ◽  
Vol 688 ◽  
pp. 012132
Author(s):  
Z. Zhang ◽  
H. Nishimura ◽  
S. Fujioka ◽  
Y. Arikawa ◽  
M. Nakai ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Energy Transport ◽  
Intense Laser ◽  
Plasma Interaction ◽  
Laser Plasma Interaction

Spectrum of transition radiation from hot electrons generated in ultra-intense laser plasma interaction

2002 ◽  
Vol 9 (8) ◽  
pp. 3610-3616 ◽  
Author(s):  
Jian Zheng ◽  
K. A. Tanaka ◽  
T. Miyakoshi ◽  
Y. Kitagawa ◽  
R. Kodama ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Transition Radiation ◽  
Hot Electrons ◽  
Intense Laser ◽  
Plasma Interaction ◽  
Laser Plasma Interaction

scholarly journals Sub-TeV proton beam generation by ultra-intense laser irradiation of foil-and-gas target

2012 ◽  
Vol 19 (2) ◽  
pp. 023111 ◽  
Author(s):  
F. L. Zheng ◽  
H. Y. Wang ◽  
X. Q. Yan ◽  
T. Tajima ◽  
M. Y. Yu ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Proton Beam ◽  
Intense Laser ◽  
Beam Generation ◽  
Gas Target

Improve beam quality of laser proton acceleration with funnel-shaped-hole target

2016 ◽  
Vol 30 (08) ◽  
pp. 1650045 ◽  
Author(s):  
Peng Yang ◽  
Da Peng Fan ◽  
Yu Xiao Li
Keyword(s):  
Proton Beam ◽  
Short Pulse ◽  
Beam Quality ◽  
Rear Surface ◽  
Beam Divergence ◽  
Optimal Size ◽  
Proton Acceleration ◽  
Shaped Hole ◽  
Laser Proton Acceleration

Improve beam quality of laser proton acceleration using a funnel-shaped-hole target is demonstrated through particle simulations. When an intense short pulse laser illuminates a thin foil target with a hole at the rear surface, the proton beam divergence is suppressed compared with that obtained in a traditional flat target. In this paper, a funnel-shaped-hole target is proposed to improve the proton beam quality. Using two-dimensional particle-in-cell (PIC) simulations, three different shapes of target (funnel-shaped-hole target, cylinder-shaped-hole target and flat target) are simulated and compared. The funnel-shaped hole in the rear surface of the target helps to focus the electron cloud significantly and improve the maximum proton energy and suppress the proton beam divergence. Different thicknesses of the new target are also simulated, and the effects of thickness on the divergence angle and proton spectra are investigated. The optimal size of the new target is obtained and the quality of the proton beam is improved significantly. The funnel-shaped-hole target serves as a new method to improve the proton beam quality in laser–plasma interactions.

scholarly journals Effect of inside diameter of tip on proton beam produced by intense laser pulse on double-layer cone targets

2013 ◽  
Vol 31 (1) ◽  
pp. 123-127 ◽  
Author(s):  
Fengjuan Wu ◽  
Weimin Zhou ◽  
Lianqiang Shan ◽  
Zongqing Zhao ◽  
Jinqing Yu ◽  
...  
Keyword(s):  
Proton Beam ◽  
Double Layer ◽  
Intense Laser ◽  
Proton Beams ◽  
Particle In Cell ◽  
Inside Diameter ◽  
Peak Energy ◽  
Electro Magnetic ◽  
Cone Target ◽  
Beam Characteristics

AbstractThe laser-driven acceleration of proton beams from a double-layer cone target, comprised of a cone shaped high-Z material target with a low density proton layer, is investigated via two-dimensional fully relativistic electro-magnetic particle-in-cell simulations. The dependence of the inside diameter (ID) of the tip size of a double-layer cone target on proton beam characteristics is demonstrated. Our results show that the peak energy of proton beams significantly increases and the divergence angle decreases with decreasing ID size. This can be explained by the combined effects of a stronger laser field that is focused inside the cone target and a larger laser interaction area by reducing the ID size.

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