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 Accelerating ions with high-energy short laser pulses from submicrometer thick targets

2016 ◽  
Vol 4 ◽  
Author(s):  
F. Wagner ◽  
C. Brabetz ◽  
O. Deppert ◽  
M. Roth ◽  
T. Stöhlker ◽  
...  
Keyword(s):  
Focal Plane ◽  
Short Pulse ◽  
Laser Pulses ◽  
High Energy ◽  
Ion Acceleration ◽  
Temporal Contrast ◽  
Short Pulse Laser ◽  
Target Intensity ◽  
Short Laser Pulses ◽  
And Control

Using the example of the PHELIX high-energy short pulse laser we discuss the technical preconditions to investigate ion acceleration with submicrometer thick targets. We show how the temporal contrast of this system was improved to prevent pre-ionization of such targets on the nanosecond timescale. Furthermore the influence of typical fluctuations or uncertainties of the on-target intensity on ion acceleration experiments is discussed. We report how these uncertainties were reduced by improving the assessment and control of the on-shot intensity and by optimizing the positioning of the target into the focal plane. Finally we report on experimental results showing maximum proton energies in excess of 85 MeV for ion acceleration via the target normal sheath acceleration mechanism using target thicknesses on the order of one micrometer.

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

scholarly journals Effect of pre-plasma on the ion acceleration by intense ultra-short laser pulses

2018 ◽  
Vol 36 (2) ◽  
pp. 226-231 ◽  
Author(s):  
Parvin Varmazyar ◽  
Saeed Mirzanejhad ◽  
Taghi Mohsenpour
Keyword(s):  
Laser Pulses ◽  
Complete Analysis ◽  
Ion Acceleration ◽  
Destructive Effect ◽  
Particle In Cell ◽  
Solid Density ◽  
Cell Simulation ◽  
Fs Laser ◽  
Short Laser Pulses ◽  
Plasma Effect

AbstractIn the interaction of short-laser pulses with a solid density target, pre-plasma can play a major role in ion acceleration processes. So far, complete analysis of pre-plasma effect on the ion acceleration by ultra-short laser pulses in the radiation pressure acceleration (RPA) regime has been unknown. Then the effect of pre-plasma on the ion acceleration efficiency is analyzed by numerical results of the particle-in-cell simulation in the RPA regime. It is shown that, for long-laser pulses (τp > 50 fs), the presence of pre-plasma makes a destructive effect on ion acceleration while it may have a contributing effect for short-laser pulses (τp < 50 fs). Therefore, the 35 fs (20 fs) laser pulse can accelerate ions up to 40 MeV (55 eV), which is almost two (three) times larger in energy rather than use of a 100 fs pulse with the same pre-plasma scale length.

scholarly journals Ion acceleration in electrostatic field of charged cavity created by ultra-short laser pulses of 1020–1021 W/cm2

2017 ◽  
Vol 24 (1) ◽  
pp. 010704 ◽  
Author(s):  
V. Yu. Bychenkov ◽  
P. K. Singh ◽  
H. Ahmed ◽  
K. F. Kakolee ◽  
C. Scullion ◽  
...  
Keyword(s):  
Electrostatic Field ◽  
Laser Pulses ◽  
Ion Acceleration ◽  
Short Laser Pulses

scholarly journals Efficient ion acceleration by collective laser-driven electron dynamics with ultra-thin foil targets

2010 ◽  
Vol 28 (1) ◽  
pp. 215-221 ◽  
Author(s):  
S. Steinke ◽  
A. Henig ◽  
M. Schnürer ◽  
T. Sokollik ◽  
P.V. Nickles ◽  
...  
Keyword(s):  
Thin Foil ◽  
Laser Pulses ◽  
Maximum Energy ◽  
Skin Depth ◽  
Ion Acceleration ◽  
Carbon Ions ◽  
Incident Laser ◽  
Particle In Cell ◽  
Incident Laser Pulse ◽  
Ion Energies

AbstractExperiments on ion acceleration by irradiation of ultra-thin diamond-like carbon (DLC) foils, with thicknesses well below the skin depth, irradiated with laser pulses of ultra-high contrast and linear polarization, are presented. A maximum energy of 13 MeV for protons and 71 MeV for carbon ions is observed with a conversion efficiency of ~10%. Two-dimensional particle-in-cell (PIC) simulations reveal that the increase in ion energies can be attributed to a dominantly collective rather than thermal motion of the foil electrons, when the target becomes transparent for the incident laser pulse.

scholarly journals High-intensity laser-driven proton acceleration: influence of pulse contrast

2006 ◽  
Vol 364 (1840) ◽  
pp. 711-723 ◽  
Author(s):  
Paul McKenna ◽  
Filip Lindau ◽  
Olle Lundh ◽  
David Neely ◽  
Anders Persson ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Thin Foil ◽  
Laser Pulses ◽  
Energy Distributions ◽  
Proton Acceleration ◽  
High Intensity Laser ◽  
Short Laser Pulses ◽  
Spatial Quality ◽  
Intensity Laser ◽  
Pulse Contrast

Proton acceleration from the interaction of ultra-short laser pulses with thin foil targets at intensities greater than 10 18  W cm −2 is discussed. An overview of the physical processes giving rise to the generation of protons with multi-MeV energies, in well defined beams with excellent spatial quality, is presented. Specifically, the discussion centres on the influence of laser pulse contrast on the spatial and energy distributions of accelerated proton beams. Results from an ongoing experimental investigation of proton acceleration using the 10 Hz multi-terawatt Ti : sapphire laser (35 fs, 35 TW) at the Lund Laser Centre are discussed. It is demonstrated that a window of amplified spontaneous emission (ASE) conditions exist, for which the direction of proton emission is sensitive to the ASE-pedestal preceding the peak of the laser pulse, and that by significantly improving the temporal contrast, using plasma mirrors, efficient proton acceleration is observed from target foils with thickness less than 50 nm.

scholarly journals Carbon ion acceleration from thin foil targets irradiated by ultrahigh-contrast, ultraintense laser pulses

2010 ◽  
Vol 12 (4) ◽  
pp. 045020 ◽  
Author(s):  
D C Carroll ◽  
O Tresca ◽  
R Prasad ◽  
L Romagnani ◽  
P S Foster ◽  
...  
Keyword(s):  
Thin Foil ◽  
Laser Pulses ◽  
Ion Acceleration ◽  
Carbon Ion

scholarly journals Ion acceleration in underdense plasmas by ultra-short laser pulses

2014 ◽  
Vol 16 (3) ◽  
pp. 033031 ◽  
Author(s):  
A Lifschitz ◽  
F Sylla ◽  
S Kahaly ◽  
A Flacco ◽  
M Veltcheva ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Ion Acceleration ◽  
Underdense Plasmas ◽  
Short Laser Pulses

scholarly journals Production of ion beams in high-power laser–plasma interactions and their applications

2004 ◽  
Vol 22 (1) ◽  
pp. 19-24 ◽  
Author(s):  
F. PEGORARO ◽  
S. ATZENI ◽  
M. BORGHESI ◽  
S. BULANOV ◽  
T. ESIRKEPOV ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Medical Physics ◽  
Ion Beam ◽  
Laser Pulses ◽  
Ion Beams ◽  
Laser Plasma Interactions ◽  
Physical Mechanisms ◽  
Short Laser Pulses ◽  
Laser Pulse Intensity ◽  
Target Design

Energetic ion beams are produced during the interaction of ultrahigh-intensity, short laser pulses with plasmas. These laser-produced ion beams have important applications ranging from the fast ignition of thermonuclear targets to proton imaging, deep proton lithography, medical physics, and injectors for conventional accelerators. Although the basic physical mechanisms of ion beam generation in the plasma produced by the laser pulse interaction with the target are common to all these applications, each application requires a specific optimization of the ion beam properties, that is, an appropriate choice of the target design and of the laser pulse intensity, shape, and duration.

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