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Article
Open AccessAccurate spectra for high energy ions by advanced time-of-flight diamond-detector schemes in experiments with high energy and intensity lasers
Time-Of-Flight (TOF) methods are very effective to detect particles accelerated in laser-plasma interactions, but they show significant limitations when used in experiments with high energy and intensity laser...
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Article
Electric and magnetic fields do not modify the biochemical properties of FRTL-5 cells
Background: Electric and magnetic fields (EMF) might be involved in human disease and numerous research and scientific reviews have been conducted to address this question. In particular thyroid ...
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Article
An integrated approach to ultraintense laser sciences: The PLASMON-X project
In this paper we discuss recent results in the design configuration and modelling of the PLASMON-X project aimed at the development of an innovative, high-gradient acceleration with super-intense and ultra-sho...
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Article
X-ray spectroscopic diagnostics of ultrashort laser-cluster interaction at the stage of the nonadiabatic scattering of clusters
X-ray spectroscopic diagnostics of laser-cluster interaction at the stage of nonadiabatic scattering of clusters and formation of a spatially uniform plasma channel has been performed. The experimental investi...
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Article
Study of forward accelerated fast electrons in ultrashort Ti K α sources
The results of an experiment aimed at studying hot electrons emerging from a target rear side in ultrashort laser-based [ ]Kα sources are described. In particular, forward accelerated fast...
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Article
Production of hollow cylindrical plasmas for laser guiding in acceleration experiments
One of the major tasks for the progress of laser acceleration of electrons in plasmas is the guiding of focused pulses along path lengths much larger than the depth of focus. We have tested experimentally the ...
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Article
Quantitative analysis of thin samples by differential absorption imaging using a laser-plasma soft X-ray source
We consider the application of the differential absorption imaging technique in the soft X-ray region. The surface-density maps of test samples containing bromine, resulting from the application of the differe...
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Article
Thomson backscattering X-rays from ultra-relativistic electron bunches and temporally shaped laser pulses
The process of Thomson scattering of an ultra-intense laser pulse by a relativistic electron bunch has been proposed as a way to obtain a bright source of short, tunable and quasi-monochromatic X-ray pulses. T...
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Article
Laser energy deposition in relativistic interactions with underdense plasmas
It is well established that, at sub-relativistic intensities, the absorption of laser light by underdense plasmas decreases with increasing pulse intensity as interaction enters a non-linear regime. On the oth...
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Article
Experimental study of X-ray generation in laser-produced plasmas based onK-shell time-resolved spectroscopy
Soft-X-ray generation in aluminium plasmas produced by Nd nano-second laser pulses is investigated analysing time-resolved spectra ofK-shell line emission. Time histories of line emission and electron temperature...
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Chapter
Reflection and Transmission of High Intensity Femtosecond Laser Pulse Focused on Very Thin Plastic Foils
The 150 fs pulse of the LOA Ti:Sapphire laser has been focused at an intensity of 5×1017 W/cm2 on a 800Å plastic foil. The reflected and transmitted laser radiation resulted strongly affected by Self Phase Modula...
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Chapter
Picosecond Interferometry of Plasmas Before and After Short Laser Pulse Propagation
The propagation of an intense short EM wave packet through a plasma is of great relevance for both basic physics and applications, the latter including new schemes of fuel ignition for Inertial Confinement Fus...
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Article
Front- and rear-face X-ray emission from laser-irradiated Al foils
We studied theK-shell X-ray emission from plasmas produced by laser irradiation of Al foils. Electron temperature and density of the emitting region were estimated from line ratio measurements. Spectra obtained f...
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Article
X-ray emission from plasmas produced by Nd-laser on Fe targets
We studied the X-ray emission from laser plasmas produced by irradiating thick solid Fe targets with 1.064 μm Nd-laser light at intensity up to 1.2·1013 W/cm2 with 3 and 20 ns pulses. Measurements include X-ray s...
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Chapter
Laser Driven Plasma Instabilities at Moderate Laser Irradiances
A systematic investigation is in progress on Second Harmonic (SH) and Three-Half Harmonic (3ω/2) emission generated by the interaction of a 3 ns 1.064 μm Nd:YAG laser beam with underdense plasmas produced from...
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Article
Three-half harmonic generation in laser-plasma interaction: Evidence for plasmon propagation
Side emitted 3ω/2 radiation was studied by interacting 1.064 μm laser light with plasmas obtained from exploding thin foils. Both focusing (f/8) and collecting (f/7) optics were designed in order to reduce the in...
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Chapter
Analysis of 2ω and 3ω/2 Spectra from Plasmas Produced by Irradiation of Thin Foil Targets
Thin plastic foils have been irradiated at 1.064 μm laser wavelength and an intensity up to 5x 1013 W/cm2. The plasma produced became underdense during the laser pulse and electron temperatures of several hundred...
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Chapter
Experimental Study of Beam-Plasma Instabilities in Long Scalelength Laser Produced Plasmas
Plasmas with scalelegths of the order of 1 mm were produced by focusing four green laser beams of the Rutherford Appleton Laboratory Vulcan laser onto thin foil targets in a line focus configuration. A delayed...
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Article
High-resolution measurements of pressure self-broadening and shift for the metyl-cyanide rotational J=1−0 line
The capabilities of the travelling-wave spectrometry in the field of high-resolution measurements of low-pressure gases at microwave frequencies are discussed. Some details about the main aspects of the experi...
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Chapter
Self-Focusing and Hydrodynamics in Laser Interaction with Underdense Plasma
The interaction of a GW laser beam ( λ= 1. 06 µm) with a plasma far from critical density (ne /nc ≤ 10-2) has been studied at an intensity of 1013 W/cm2. Experimental results showed a net redistribution of the la...
