Soft X-ray and EUV emission spectra of beryllium plasma produced by neodymium-glass laser radiation with broad frequency and angular spectra

Time- and space-integrated emission spectra measurements have been performed in plasma produced by 308 nm wavelength XeCl laser radiation (IL = (4–10)·1012 W/cm2, τ = 10 ns) and by 248 nm wavelength KrF laser pulse train radiation (IL = 5·1015 W/cm2, τ = 7 ps, 16 pulses in train) on CF2 plane target. Theoretical modelling of Lyman series and He-like ion resonance series of fluorine and its fit of experimental data show considerable differences in the absorption of laser radiation in the two plasmas.

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X ray and EUV emission spectra of oxygen ions precipitating into the Jovian atmosphere

Journal of Geophysical Research Atmospheres ◽

10.1029/98ja02395 ◽

1998 ◽

Vol 103 (A11) ◽

pp. 26687-26698 ◽

Cited By ~ 36

Author(s):

V. Kharchenko ◽

Weihong Liu ◽

A. Dalgarno

Keyword(s):

Emission Spectra ◽

X Ray ◽

Oxygen Ions ◽

Euv Emission ◽

Jovian Atmosphere

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X-ray emission from a plasma mirror of a neodymium glass laser

Soviet Journal of Quantum Electronics ◽

10.1070/qe1984v014n11abeh006497 ◽

1984 ◽

Vol 14 (11) ◽

pp. 1564-1566

Author(s):

M Kalal ◽

Larisa G Pinaeva ◽

M Vrbovà

Keyword(s):

Glass Laser ◽

X Ray ◽

Neodymium Glass

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Generation of nanosecond soft X-ray pulses as a result of interaction of the Nd: glass laser radiation with gas puff targets

Laser and Particle Beams ◽

10.1017/s0263034600008338 ◽

1994 ◽

Vol 12 (3) ◽

pp. 471-483 ◽

Cited By ~ 13

Author(s):

H. Fiedorowicz ◽

A. Bartnik ◽

Z. Patron ◽

P. Parys

Keyword(s):

Laser Radiation ◽

Vacuum Chamber ◽

High Efficiency ◽

X Rays ◽

Glass Laser ◽

Temperature Plasma ◽

X Ray ◽

Electromagnetic Valve ◽

Nanosecond Pulses ◽

Nd:Glass Laser

A new method of generation of nanosecond soft X-ray pulses with a photon energy around 1 keV is presented. X-rays are generated in a high-temperature plasma, which is created as a result of the interaction of Nd:glass laser radiation with a gas puff target. The target was obtained by puffing a small amount of gas through the nozzle into the vacuum chamber by means of a pressure electromagnetic valve. The pulses of laser radiation, with pulse duration of 1 ns and energy up to 15 J, generated in the system of a high-power Nd:glass laser were used for the target heating. Spatial, spectral, and temporal measurements of X-ray emission have shown that the high-intensity soft X rays are generated as a result of the interaction of nanosecond pulses of Nd:glass laser radiation with the gas puff target. A high efficiency of X-ray generation is suggested to be related to the effect of condensation of the gas outflowing from the valve nozzle and, in effect, to the interaction of laser radiation with matter in a form of aerosol.

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Second-harmonic conversion of neodymium glass laser radiation with controlled spatial coherence

Bulletin of the Lebedev Physics Institute ◽

10.3103/s1068335611110017 ◽

2011 ◽

Vol 38 (11) ◽

pp. 317-322

Author(s):

B. L. Vasin ◽

M. V. Osipov ◽

V. N. Puzyrev ◽

A. T. Saakyan ◽

A. N. Starodub

Keyword(s):

Laser Radiation ◽

Second Harmonic ◽

Spatial Coherence ◽

Glass Laser ◽

Neodymium Glass ◽

Harmonic Conversion

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One possibility of increasing the brightness of neodymium-glass laser radiation

Soviet Journal of Quantum Electronics ◽

10.1070/qe1975v005n04abeh011134 ◽

1975 ◽

Vol 5 (4) ◽

pp. 473-475

Author(s):

Artur A Mak ◽

V M Mit'kin ◽

V N Polukhin ◽

A I Stepanov ◽

O S Shchavelev

Keyword(s):

Laser Radiation ◽

Glass Laser ◽

Neodymium Glass

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Nano-probe x-ray analysis and high-resolution imaging on planar defects in high-pressure synthesized infinite-layer superconductor

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100171377 ◽

1994 ◽

Vol 52 ◽

pp. 728-729

Author(s):

Y. Y. Wang ◽

H. Zhang ◽

V. P. Dravid ◽

H. Zhang ◽

L. D. Marks ◽

...

Keyword(s):

High Pressure ◽

High Resolution ◽

Atomic Structure ◽

Emission Spectra ◽

High Resolution Electron Microscopy ◽

Planar Defects ◽

X Ray ◽

Infinite Layer ◽

Resolution Electron ◽

Resolution Imaging

Azuma et al. observed planar defects in a high pressure synthesized infinitelayer compound (i.e. ACuO2 (A=cation)), which exhibits superconductivity at ~110 K. It was proposed that the defects are cation deficient and that the superconductivity in this material is related to the planar defects. In this report, we present quantitative analysis of the planar defects utilizing nanometer probe xray microanalysis, high resolution electron microscopy, and image simulation to determine the chemical composition and atomic structure of the planar defects. We propose an atomic structure model for the planar defects.Infinite-layer samples with the nominal chemical formula, (Sr1-xCax)yCuO2 (x=0.3; y=0.9,1.0,1.1), were prepared using solid state synthesized low pressure forms of (Sr1-xCax)CuO2 with additions of CuO or (Sr1-xCax)2CuO3, followed by a high pressure treatment.Quantitative x-ray microanalysis, with a 1 nm probe, was performed using a cold field emission gun TEM (Hitachi HF-2000) equipped with an Oxford Pentafet thin-window x-ray detector. The probe was positioned on the planar defects, which has a 0.74 nm width, and x-ray emission spectra from the defects were compared with those obtained from vicinity regions.

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