Laboratory soft x-ray source with foil target

1993 ◽  
Author(s):  
Karl-Heinz Stephan ◽  
Heinrich W. Braeuninger
Keyword(s):  
X Ray ◽  
Foil Target

scholarly journals An effect of the target position relative to the laser focus on X-ray emission from the laser plasma

1992 ◽  
Vol 10 (4) ◽  
pp. 743-751 ◽  
Author(s):  
M. Chvojka ◽  
B. Králiková ◽  
E. Krouský ◽  
L. Láska ◽  
K. Maŝek ◽  
...  
Keyword(s):  
Laser Plasma ◽  
Laser System ◽  
Broad Band ◽  
Plasma Temperature ◽  
Target Position ◽  
Resonant Line ◽  
X Ray ◽  
Laser Focus ◽  
Foil Target ◽  
Band Spectra

The first harmonics beam generated by an iodine laser system was focused by an f/2 optics on an Al foil target. The X-ray output from the laser plasma both in the line and broad-band spectra was registered over an interval around the “ideal” focus. It was found that the maximum X-ray power is not obtained in the focus itself but for a somewhat larger focal spot outside the focus. To explain this phenomena, temperature and density measurements were in addition made. The plasma temperature evaluated from both the line (He-like Al XII resonant line and j, k, l satellites) and broad-band spectra (two foil method) was also measured and found to be largely constant in the vicinity of the focus. The line and broad-band temperatures differ, the broad-band temperature being about 25% higher. The electron density was equally determined using an intercombination line.

Novel X-Ray Source Using Rear Side X-Ray Emission from the Foil Target

1996 ◽  
Vol 76 (2) ◽  
pp. 232-234
Author(s):  
H. Hirose ◽  
K. Ando ◽  
K. Miyazawa ◽  
T. Hara ◽  
K. Kodate ◽  
...  
Keyword(s):  
Rear Side ◽  
X Ray ◽  
Foil Target

scholarly journals Shadow imaging studies on laser-ablated foil target by using an X-ray laser

2010 ◽  
Vol 59 (7) ◽  
pp. 4767
Author(s):  
Wang Chen ◽  
Zheng Wu-Di ◽  
Fang Zhi-Heng ◽  
Sun Jin-Ren ◽  
Wang Wei ◽  
...  
Keyword(s):  
Imaging Studies ◽  
X Ray ◽  
Shadow Imaging ◽  
Foil Target

scholarly journals Properties of an exploding foil neon-like germanium soft X-ray laser

1993 ◽  
Vol 11 (1) ◽  
pp. 109-117 ◽  
Author(s):  
H. Daido ◽  
Y. Kato ◽  
K. Murai ◽  
G. Yuan ◽  
H. Shiraga ◽  
...  
Keyword(s):  
Electron Density ◽  
Population Inversion ◽  
Suitable Condition ◽  
X Ray ◽  
Foil Target ◽  
Electron Density And Temperature ◽  
Gain Length ◽  
Hydrodynamic Code ◽  
28 Nm

We describe the properties of the exploding foil neon-like germanium soft X-ray lasers having wavelengths of 19–28 nm and gain length product of more than 10. The measured X-ray intensity of lasing lines from an exploding foil target has been explained with the results of the plasma hydrodynamic code from the viewpoint of suitable condition of electron density and temperature for creating population inversion.

scholarly journals Relativistic laser propagation through underdense and overdense plasmas

2001 ◽  
Vol 19 (1) ◽  
pp. 5-13 ◽  
Author(s):  
O. WILLI ◽  
D.H. CAMPBELL ◽  
A. SCHIAVI ◽  
M. BORGHESI ◽  
M. GALIMBERTI ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Picosecond Laser ◽  
Thin Foil ◽  
Nanosecond Laser Pulse ◽  
Nanosecond Laser ◽  
Pulse Delay ◽  
X Ray ◽  
X Ray Imaging ◽  
Underdense Plasmas ◽  
Foil Target

Detailed investigations of the propagation of an ultraintense picosecond laser pulse through preformed plasmas have been carried out. An underdense plasma with peak density around 0.1nc was generated by exploding a thin foil target with an intense nanosecond laser pulse. The formation of plasma channels with an ultraintense laser pulse due to ponderomotive expulsion of elections and the subsequent Coulomb explosion were investigated. The laser transmission through underdense plasmas was measured for a picosecond pulse at intensities above 1019 W/cm2 with and without a plasma channel preformed with an ultraintense prepulse. The energy transmitted through the plasma increased from the few percent transmittance measured in absence of the preformed channel to almost 100% transmission with the channelling to main pulse delay at around 100 ps. The propagation of a relativistic laser pulse through overdense plasmas was also investigated. A well-characterized plasma with an electron density up to 8nc was generated by soft X-ray irradiation of a low-density foam target. The propagation of the laser pulse was observed via X-ray imaging and monitoring the energy transmission through the plasma. Evidence of collimated laser transport was obtained.

scholarly journals Theoretical Calculation of X-Ray Emission from Laser-Produced Plasmas

1984 ◽  
Vol 86 ◽  
pp. 213-214
Author(s):  
D. Duston ◽  
R.W. Clark ◽  
J. Davis
Keyword(s):  
Initial Conditions ◽  
Laser Energy ◽  
Target Material ◽  
Physical Processes ◽  
X Ray ◽  
Radiative Emission ◽  
Deposited Energy ◽  
Foil Target ◽  
Radiation Processes

The interaction of an intense short-wavelength laser beam with a solid foil target is a topic which has been studied vigorously for many years. Many inherent problems still exist, however, in our understanding of observed experimental data. In particular, the problem of transport through the target material of the deposited laser energy continues to be the focus of many investigations. Although most.of the work has been dominated by particle transport phenomena, it was shown in a previous paper that radiation processes and photon transport often play a major role in the redistribution of the deposited energy in laser driven plasmas. In this presentation, we continue our investigation of the role of atomic physics and radiative emission in laser-produced plasmas by studying the effects of these physical processes as a function of varying initial conditions for both aluminum and carbon foil targets.

scholarly journals EXPERIMENTAL STUDY ON X-RAY SPECTRA FROM GOLD FOIL TARGET IRRADIATED BY 1.053μm LASER

2000 ◽  
Vol 49 (12) ◽  
pp. 2408
Author(s):  
YANG JIA-MIN ◽  
DING YAO-NAN ◽  
SUN KE-XU ◽  
HUANG TIAN-XUAN ◽  
ZHANG WEN-HAI ◽  
...  
Keyword(s):  
Experimental Study ◽  
Gold Foil ◽  
X Ray ◽  
Foil Target
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