Study of the vacuum spark plasma soft X-ray sources

2003 ◽  
Author(s):  
X.M. Guo ◽  
M. Xu ◽  
R. Ye ◽  
S. Drew ◽  
A. Philippe ◽  
...  
Keyword(s):  
X Ray ◽  
Spark Plasma ◽  
Vacuum Spark

X-ray spectra of Ne-like Ba, La, Ce, and Pr ions

1984 ◽  
Vol 62 (12) ◽  
pp. 1924-1927 ◽  
Author(s):  
E. V. Aglitsky ◽  
P. S. Antsiferov ◽  
S. L. Mandelstam ◽  
A. M. Panin
Keyword(s):  
Image Intensifier ◽  
X Ray ◽  
Spark Plasma ◽  
First Time ◽  
Vacuum Spark

The spectra of Ne-like ions of Ba, La, Ce, and Pr in the 1.9 – 2.7 Å region, excited in the low-inductance vacuum spark plasma, have been obtained for the first time. A Johann's crystal spectrograph in combination with an image intensifier was used for recording the spectra. The 2s22p6 – 2s2p63p and 2s22p6 – 2s22p53d transitions have been identified in these ions along with the satellite lines of Na-like and Mg-like Ba–Pr ions.

X-Ray Spectra from H-, He- and Li-Like Iron Ions in a Vacuum Spark Plasma

1983 ◽  
Vol 52 (6) ◽  
pp. 1957-1968 ◽  
Author(s):  
Shigeru Morita ◽  
Junji Fujita
Keyword(s):  
Iron Ions ◽  
X Ray ◽  
Spark Plasma ◽  
Vacuum Spark

Investigation of the Temporal Evolution of X-Ray Emission From a Copper Vacuum Spark Plasma

2012 ◽  
Vol 40 (12) ◽  
pp. 3390-3394 ◽  
Author(s):  
Solmaz Saboohi ◽  
Seong Ling Yap ◽  
L. S. Chan ◽  
Chiow San Wong
Keyword(s):  
Temporal Evolution ◽  
X Ray ◽  
Spark Plasma ◽  
Vacuum Spark

X-ray and EUV Emission Studies of Copper Vacuum Spark Plasma

2010 ◽  
Author(s):  
L. S. Chan ◽  
M. Ghomeishi ◽  
S. L. Yap ◽  
C. S. Wong ◽  
A. K. Yahya ◽  
...  
Keyword(s):  
X Ray ◽  
Euv Emission ◽  
Spark Plasma ◽  
Emission Studies ◽  
Vacuum Spark

scholarly journals A low energy tunable pulsed X-ray source based on the pseudospark electron beam

2007 ◽  
Vol 25 (3) ◽  
pp. 497-502 ◽  
Author(s):  
C.S. Wong ◽  
H.J. Woo ◽  
S.L. Yap
Keyword(s):  
Electron Beam ◽  
Biological Sample ◽  
Production Efficiency ◽  
Line Emission ◽  
Electrical Energy ◽  
Low Energy ◽  
Characteristic Line ◽  
X Ray ◽  
Spark Plasma ◽  
Vacuum Spark

A low energy pulsed X-ray source with 17 J electrical input energy has been constructed based on the vacuum spark configuration triggered by the pseudospark electron beam. With such a low input electrical energy, the frequently studied X-ray emitting vacuum spark plasma is not obtained. Instead, this configuration gives rise to a point-like electron beam-target pulsed X-ray source at the tip of the anode. Emission of X-ray is observed during the pre-breakdown phase. The X-ray spectrum is dominated by the characteristic line emission of the anode material. The total X-ray energy emission from the source can be estimated by assuming it to be a monochromatic point source. It is found to have an X-ray production efficiency of 0.1%, giving an average X-ray dosage of 18 mGy per pulse. X-ray radiography of small biological sample is demonstrated to illustrate a potential application of the present X-ray source.

Electron density measurement of a pre-pinched vacuum spark plasma using soft X-ray titanium and vanadium emission

1989 ◽  
Vol 22 (7) ◽  
pp. 1133-1143 ◽  
Author(s):  
M Finkenthal ◽  
D Stutman ◽  
P Mandelbaum ◽  
A L Osterheld ◽  
M H Chen
Keyword(s):  
Electron Density ◽  
Density Measurement ◽  
X Ray ◽  
Spark Plasma ◽  
Vacuum Spark

Development of WC-Fe3Al Composites by Spark Plasma Sintering Process

2016 ◽  
Vol 881 ◽  
pp. 307-312
Author(s):  
Luis Antonio C. Ybarra ◽  
Afonso Chimanski ◽  
Sergio Gama ◽  
Ricardo A.G. da Silva ◽  
Izabel Fernanda Machado ◽  
...  
Keyword(s):  
Spark Plasma Sintering ◽  
Zinc Stearate ◽  
Sintering Process ◽  
X Ray Diffraction ◽  
X Ray ◽  
Plasma Sintering ◽  
Al Composite ◽  
Spark Plasma ◽  
Short Time ◽  
Vibration Mill

Tungsten carbide (WC) based composites are usually produced with cobalt, but this binder has the inconvenience of shortage, unstable price and potential carcinogenicity. The objective of this study was to develop WC composite with intermetallic Fe3Al matrix. Powders of WC, iron and aluminum, with composition WC-10 wt% Fe3Al, and 0.5 wt% zinc stearate were milled in a vibration mill for 6 h and sintered in a SPS (spark plasma sintering) furnace at 1150 °C for 8 min under pressure of 30 MPa. Measured density and microstructure analysis showed that the composite had significant densification during the (low-temperature, short time) sintering, and X-ray diffraction analysis showed the formation of intermetallic Fe3Al. Analysis by Vickers indentation resulted in hardness of 11.2 GPa and fracture toughness of 24.6 MPa.m1/2, showing the feasibility of producing dense WC-Fe3Al composite with high mechanical properties using the SPS technique.

Effects of experimental parameters on EUV emitted from tin vacuum spark plasma

2014 ◽  
Author(s):  
Solmaz Saboohi ◽  
S. L. Yap ◽  
L. S. Chan ◽  
C. S. Wong
Keyword(s):  
Experimental Parameters ◽  
Spark Plasma ◽  
Vacuum Spark

scholarly journals Structure and Deformation Behavior of Ti-SiC Composites Made by Mechanical Alloying and Spark Plasma Sintering

Materials ◽  
2019 ◽  
Vol 12 (8) ◽  
pp. 1276 ◽  
Author(s):  
Dariusz Garbiec ◽  
Volf Leshchynsky ◽  
Alberto Colella ◽  
Paolo Matteazzi ◽  
Piotr Siwak
Keyword(s):  
Mechanical Alloying ◽  
Spark Plasma Sintering ◽  
Indentation Size Effect ◽  
Sintering Temperature ◽  
High Energy ◽  
Indentation Size ◽  
X Ray ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Energy Ball

Combining high energy ball milling and spark plasma sintering is one of the most promising technologies in materials science. The mechanical alloying process enables the production of nanostructured composite powders that can be successfully spark plasma sintered in a very short time, while preserving the nanostructure and enhancing the mechanical properties of the composite. Composites with MAX phases are among the most promising materials. In this study, Ti/SiC composite powder was produced by high energy ball milling and then consolidated by spark plasma sintering. During both processes, Ti3SiC2, TiC and Ti5Si3 phases were formed. Scanning electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction study showed that the phase composition of the spark plasma sintered composites consists mainly of Ti3SiC2 and a mixture of TiC and Ti5Si3 phases which have a different indentation size effect. The influence of the sintering temperature on the Ti-SiC composite structure and properties is defined. The effect of the Ti3SiC2 MAX phase grain growth was found at a sintering temperature of 1400–1450 °C. The indentation size effect at the nanoscale for Ti3SiC2, TiC+Ti5Si3 and SiC-Ti phases is analyzed on the basis of the strain gradient plasticity theory and the equation constants were defined.

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