High Kα x-ray conversion efficiency from extended source gas jet targets irradiated by ultra short laser pulses

2008 ◽  
Vol 92 (24) ◽  
pp. 241504 ◽  
Author(s):  
N. L. Kugland ◽  
C. G. Constantin ◽  
P. Neumayer ◽  
H.-K. Chung ◽  
A. Collette ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Laser Pulses ◽  
Gas Jet ◽  
Extended Source ◽  
X Ray ◽  
Short Laser Pulses

X-ray conversion of ultra-short laser pulses on a solid sample: Role of electron waves excited in the pre-plasma

2014 ◽  
Vol 21 (7) ◽  
pp. 072108 ◽  
Author(s):  
F. Baffigi ◽  
G. Cristoforetti ◽  
L. Fulgentini ◽  
A. Giulietti ◽  
P. Koester ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Solid Sample ◽  
X Ray ◽  
Short Laser Pulses

scholarly journals Experimental study of X-ray emission from laser-irradiated planar targets on “Mishen” Facility

1992 ◽  
Vol 10 (4) ◽  
pp. 753-758 ◽  
Author(s):  
V. A. Bolotin ◽  
I. N. Burdonskii ◽  
V. V. Gavrilov ◽  
A. Yu. Gol'tsov ◽  
S. V. Zavyalets ◽  
...  
Keyword(s):  
Experimental Study ◽  
Energy Transfer ◽  
Conversion Efficiency ◽  
Spectral Resolution ◽  
Line Emission ◽  
Laser Pulses ◽  
Temporal Analysis ◽  
Ablation Rate ◽  
X Ray

X-ray emission from planar targets irradiated by 1.054-μm laser pulses was observed with temporal, spatial, and spectral resolution. The main purpose of these measurements was the investigation of energy transfer in multilayer targets and X-ray conversion efficiency. A mass ablation rate was determined from temporal analysis of multicharged ion line emission and a key role of corona X-ray emission in accelerated material preheating was established.

scholarly journals Experimental and numerical study of ultra-short laser-produced collimated Cu Kα X-ray source

2017 ◽  
Vol 35 (3) ◽  
pp. 442-449 ◽  
Author(s):  
R. Rathore ◽  
V. Arora ◽  
H. Singhal ◽  
T. Mandal ◽  
J.A. Chakera ◽  
...  
Keyword(s):  
Laser Intensity ◽  
Numerical Study ◽  
Low Cost ◽  
Laser Pulses ◽  
Photon Flux ◽  
X Rays ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Short Laser Pulses

AbstractKα X-ray sources generated from the interaction of ultra-short laser pulses with solids are compact and low-cost source of ultra-short quasi-monochromatic X-rays compared with synchrotron radiation source. Development of collimated ultra-short Kα X-ray source by the interaction of 45 fs Ti:sapphire laser pulse with Cu wire target is presented in this paper. A study of the Kα source with laser parameters such as energy and pulse duration was carried out. The observed Kα X-ray photon flux was ~2.7 × 108 photons/shot at the laser intensity of ~2.8 × 1017 W cm−2. A model was developed to analyze the observed results. The Kα radiation was coupled to a polycapillary collimator to generate a collimated low divergence (0.8 mrad) X-ray beam. Such sources are useful for time-resolved X-ray diffraction and imaging studies.

scholarly journals Simulation of a high-brightness, hard X-ray source based on high-intensity interaction of ultra-short laser pulses with high-Z targets

1997 ◽  
Vol 15 (1) ◽  
pp. 139-143
Author(s):  
V.A. Lykov ◽  
V.E. Chernyakov ◽  
Ya.Z. Kandiev ◽  
I.A. Litvinenko ◽  
V.G. Nikolaev
Keyword(s):  
Angular Distribution ◽  
Numerical Simulations ◽  
Electromagnetic Fields ◽  
High Intensity ◽  
Laser Pulses ◽  
The State ◽  
High Brightness ◽  
Fast Electrons ◽  
X Ray ◽  
Short Laser Pulses

The results of numerical simulations of fast electrons interaction with matter, calculated yield and angular distribution of bremsstrahlung and fluorescence K-α X-ray radiation and generation of electromagnetic fields, carried out by ERA, PM2D, and PRIZMA codes for the state of experiments on interaction of ultra-short laser pulses with high-Z targets at intensity of 1016−1018 W/cm2 are presented. Spherical targets with conical hollows and conical targets of high-Z matter are proposed for experiments with picosecond lasers to increase the brightness of hard X-ray sources.

scholarly journals X-ray gain at 18·2 nm (CVI Balmer α) in laser-produced recombining carbon plasmas

1988 ◽  
Vol 6 (3) ◽  
pp. 621-624 ◽  
Author(s):  
W. Brunner ◽  
R. John ◽  
Th. Schlegel
Keyword(s):  
Plasma Heating ◽  
Laser Pulses ◽  
X Ray ◽  
Short Laser Pulses ◽  
Experimental Findings ◽  
Theoretical Results

Plasma heating by short laser pulses is investigated theoretically. Gain coefficients of 3… 4 cm−1 at the Balmer α transition in carbon could be obtained. The theoretical results agree with the corresponding experimental findings.

scholarly journals X-ray spectroscopy observation of fast ions generation in plasma produced by short low-contrast laser pulse irradiation of solid targets

2007 ◽  
Vol 25 (2) ◽  
pp. 267-275 ◽  
Author(s):  
A.YA. Faenov ◽  
A.I. Magunov ◽  
T.A. Pikuz ◽  
I. YU. Skobelev ◽  
S.V. Gasilov ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Laser Intensity ◽  
Laser Pulses ◽  
Intense Laser ◽  
Low Contrast ◽  
X Ray ◽  
Fast Ions ◽  
Self Focusing ◽  
Short Laser Pulses ◽  
Charged Ions

X-ray spectra of plasma produced by the interaction of Ti:Sa laser pulses (duration from 60 fs to 1 ps, and energy from 15 mJ to 128 mJ) with foil and solid Teflon and AL targets are investigated. It is shown experimentally and theoretically that the use of low contrast (10−2 – 10−4) short laser pulses, essentially promotes the conditions for generation of fast multi-charged ions. This effect is caused by self-focusing of the main laser pulse in a preplasma produced by intense laser prepulses. Modeling of the observed spectral line shape gives evidence of a considerable (about 3%) amount of multi-charged He-like F ions with energy E ∼ 1 MeV at rather low values of laser intensity IL ≈ 6 × 1016 W cm−2.

scholarly journals X-ray conversion with PHEBUS laser

1999 ◽  
Vol 17 (3) ◽  
pp. 459-463 ◽  
Author(s):  
D. BABONNEAU ◽  
L. BONNET ◽  
S. JACQUEMOT ◽  
J.L. BOCHER ◽  
J.Y. BOUTIN ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Focal Spot ◽  
Transport Coefficients ◽  
Laser Pulses ◽  
Time Resolved ◽  
X Ray ◽  
Solid Liquid

A time-resolved X-ray conversion efficiency campaign was conducted at CEA/Limeil–Valenton on the PHEBUS laser, with Au planar targets. The calibrated diagnostic DEMIXART has measured X-ray emissions driven by shaped laser pulses. The results have been analyzed with the “physicist” 1D1/2 hydrodynamical code CHIVAS, where improved transport coefficients have been implemented. The influence of the degeneracy and solid/liquid corrections on various parameters is shown. Other significant effects due to focal spot shapes and lateral conduction are quantified with the FCI2 hydroradiative code of CEA/DRIF.

Enhanced water window x-ray emission from in situ formed carbon clusters irradiated by intense ultra-short laser pulses

2013 ◽  
Vol 103 (5) ◽  
pp. 054107 ◽  
Author(s):  
U. Chakravarty ◽  
B. S. Rao ◽  
V. Arora ◽  
A. Upadhyay ◽  
H. Singhal ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Carbon Clusters ◽  
X Ray ◽  
Water Window ◽  
Short Laser Pulses
Sign in / Sign up

Export Citation Format

Share Document