scholarly journals Spectroscopic analysis of short-pulse laser-produced plasmas

1994 ◽  
Vol 12 (3) ◽  
pp. 455-462 ◽  
Author(s):  
J.P. Matte ◽  
J.C. Kieffer ◽  
M. Chaker ◽  
C.Y. Côté ◽  
Y. Beaudoin ◽  
...  
Keyword(s):  
Spectroscopic Analysis ◽  
Short Pulse ◽  
Electron Distribution Function ◽  
Line Broadening ◽  
Ion Temperature ◽  
Electronic Density ◽  
X Ray ◽  
Dense Plasmas ◽  
Tantalum Target ◽  
Short Pulse Laser

Experimental spectra of hot dense plasmas of aluminium produced by the interaction of a subpicosecond laser with solid targets at 1016 and 5 × 1017 W/cm2 are analyzed and discussed. A detailed analysis of the K-shell spectra is given through time-dependent calculations of atomic physics postprocessed to Fokker-Planck calculations of the laser-matter interaction. The non-Maxwellian character of the electron distribution function is shown. An evaluation of the electronic density and of the ion temperature 7i will be presented through Stark line broadening calculations. An X-ray spectrum from a Tantalum target also will be presented along with a preliminary interpretation.

The study of time dependent, broadband X-ray emission from ultra-short pulse laser produced plasmas

1994 ◽  
Author(s):  
Ronnie Shepherd ◽  
Rex Booth ◽  
Dwight Price ◽  
Rosemary Walling ◽  
Richard More ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
Time Dependent ◽  
X Ray ◽  
Short Pulse Laser ◽  
Ultra Short Pulse ◽  
Ultra Short Pulse Laser

scholarly journals Short-pulse laser-driven x-ray radiography

2016 ◽  
Vol 4 ◽  
Author(s):  
E. Brambrink ◽  
S. Baton ◽  
M. Koenig ◽  
R. Yurchak ◽  
N. Bidaut ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
Incident Angle ◽  
Laboratory Astrophysics ◽  
Signal To Noise ◽  
High Quality ◽  
X Ray ◽  
Short Pulse Laser ◽  
Short Pulse Lasers

We have developed a new radiography setup with a short-pulse laser-driven x-ray source. Using a radiography axis perpendicular to both long- and short-pulse lasers allowed optimizing the incident angle of the short-pulse laser on the x-ray source target. The setup has been tested with various x-ray source target materials and different laser wavelengths. Signal to noise ratios are presented as well as achieved spatial resolutions. The high quality of our technique is illustrated on a plasma flow radiograph obtained during a laboratory astrophysics experiment on POLARs.

High-energy X-ray radiography of laser shock loaded metal dynamic fragmentation using high-intensity short-pulse laser

2018 ◽  
Vol 89 (11) ◽  
pp. 115106 ◽  
Author(s):  
Genbai Chu ◽  
Tao Xi ◽  
Minghai Yu ◽  
Wei Fan ◽  
Yongqiang Zhao ◽  
...  
Keyword(s):  
Pulse Laser ◽  
High Intensity ◽  
Short Pulse ◽  
High Energy ◽  
Laser Shock ◽  
X Ray ◽  
Dynamic Fragmentation ◽  
Short Pulse Laser

Hard x‐ray emission from intense short pulse laser plasmas

1995 ◽  
Vol 2 (8) ◽  
pp. 3106-3110 ◽  
Author(s):  
M. Schnürer ◽  
M. P. Kalashnikov ◽  
P. V. Nickles ◽  
Th. Schlegel ◽  
W. Sandner ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
X Ray ◽  
Short Pulse Laser ◽  
Laser Plasmas

Modeling of x-ray generation by ultrafast electrons in short pulse laser-solid interaction

1999 ◽  
Author(s):  
J. C. Gauthier ◽  
Th. Schlegel ◽  
L. Grémillet ◽  
S. Bastiani ◽  
P. Audebert ◽  
...  
Keyword(s):  
Pulse Laser ◽  
Short Pulse ◽  
X Ray ◽  
Short Pulse Laser

scholarly journals Bremsstrahlung soft X-ray emission from clusters heated by a Gaussian laser beam

2013 ◽  
Vol 32 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Manoj Kumar ◽  
Rohtash Singh ◽  
Updesh Verma
Keyword(s):  
Plasma Frequency ◽  
Short Pulse ◽  
Hydrodynamic Pressure ◽  
Laser Frequency ◽  
Plasma Resonance ◽  
X Rays ◽  
Gaussian Laser Beam ◽  
X Ray ◽  
Short Pulse Laser ◽  
Bremsstrahlung Emission

AbstractA theoretical model of soft X-ray emission from laser irradiated clusters is developed. An intense short pulse laser of Gaussian radial and temporal profiles impinged on a clustered gas jet, heats the cluster electrons, leading to Bremsstrahlung emission of X-rays. As the clusters expand under hydrodynamic pressure, plasma frequency of the cluster electrons ωpedecreases. When plasma frequency of a cluster approaches plasma resonance${\rm \omega}_{\,pe} = \sqrt{3} {\rm \omega}$(where ω is the laser frequency), the electrons are resonantly heated by the laser and a rapid rise in X-ray emission occurs. After a while, when cluster expansion detunes the plasma resonance, X-ray emission falls off.

An investigation of the X-ray point-source brightness for a short-pulse laser plasma

1990 ◽  
Vol 43 (1) ◽  
pp. 53-60 ◽  
Author(s):  
G.J. Tallents ◽  
M.H. Key ◽  
A. Ridgeley ◽  
W. Shaikh ◽  
C.L.S. Lewis ◽  
...  
Keyword(s):  
Point Source ◽  
Pulse Laser ◽  
Laser Plasma ◽  
Short Pulse ◽  
X Ray ◽  
Short Pulse Laser

scholarly journals Plasma-based studies with intense X-ray and particle beam sources

2002 ◽  
Vol 20 (3) ◽  
pp. 527-536 ◽  
Author(s):  
R.W. LEE ◽  
H.A. BALDIS ◽  
R.C. CAUBLE ◽  
O.L. LANDEN ◽  
J.S. WARK ◽  
...  
Keyword(s):  
Short Pulse ◽  
Dense Matter ◽  
Particle Beam ◽  
Fourth Generation ◽  
Light Sources ◽  
Warm Dense Matter ◽  
X Ray ◽  
Dense Plasmas ◽  
State Densities ◽  
Nonideal Plasmas

The construction of short pulse (<200 fs) tunable X-ray laser sources based on the X-ray free electron laser (XFEL) concept will be a watershed for plasma-based and warm dense matter research. These new fourth generation light sources will have extremely high fields and short wavelengths (∼0.1 nm) with peak spectral brightnesses 1010 greater than third generation sources. Further, the high intensity upgrade of the GSI accelerator facilities will lead to specific energy depositions up to 200 kJ/g and temperatures between 1 and 10 eV at almost solid-state densities, enabling interesting experiments in the regime of nonideal plasmas, such as the evolution of intense ion beams in the interior of a Jovian planet. Below we discuss several applications: the creation of warm dense matter (WDM) research, probing of near solid density plasmas, and laser–plasma spectroscopy of ions in plasmas. The study of dense plasmas has been severely hampered by the fact that laser-based methods have been unavailable and these new fourth generation sources will remove these restrictions.

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