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

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.

Space Resolved Measurements of the Emission of Intermediate and High Ionization States Obtained from Vacuum Spark Plasmas Using Xuv Multilayer Mirrors and a RbAP Crystal

1988 ◽  
Vol 102 ◽  
pp. 87-90
Author(s):  
M. Finkenthal ◽  
D. Stutman ◽  
J.L. Schwob ◽  
J.H. Underwood
Keyword(s):  
Spatial Extent ◽  
High Current ◽  
Plasma Region ◽  
Multilayer Mirrors ◽  
Plasma Pinch ◽  
High Ionization ◽  
Extended Plasma ◽  
Spark Plasma ◽  
Vacuum Spark

AbstractThe spatial extent of the regions from which lines of the Intermediate, NeI-like and high Li I-llke Ionization states of Ti, V, Fe, Co, and Ni, are emitted in a low inductance high-current vacuum spark plasma, has been determined using multilayer mirrors and a RbAP crystal. The spectra have been recorded in the 10–30 Å range. The main conclusion of the present work is that the intermediate ionization states are emitted from an extended plasma region, of the order of 200 microns, while the highly ionized states are formed, as it has been previously stated, In the minute plasma pinch.

scholarly journals Synthesis of Ti2SnC under Optimized Experimental Parameters of Pressureless Spark Plasma Sintering Assisted by Al Addition

2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Chen Lu ◽  
Yue Wang ◽  
Xiaofan Wang ◽  
Jianfeng Zhang
Keyword(s):  
Sintering Temperature ◽  
Molar Ratio ◽  
Mechanism Analysis ◽  
Fast Heating ◽  
Sintering Aid ◽  
Sintering Time ◽  
Plasma Sintering ◽  
Experimental Parameters ◽  
Spark Plasma ◽  
Rapid Sintering

As an effective and novel rapid sintering technology with the advantages of fast heating speed and short sintering time, SPS has been applied to the research and development of various materials. After sintering at 1325°C, Ti5Sn3and Sn occurred as impurities accompanying the synthesis of Ti2SnC with a raw powder mixture of Ti/Sn/C = 2/1/1 (molar ratio). But by addition of 0.2 molar Al, and further optimization of sintering parameters at 1400°C for 10 min, almost fully pure Ti2SnC was obtained with a clear layered microstructure. The reaction mechanism analysis suggests that this beneficial effect of Al could be attributed to the suppression of decomposition of Ti2SnC by formation of Ti2SnxAl1−xC solid solution at a high sintering temperature. The present study reports a novel route to synthesize Ti2SnC by PL-SPS with a self-designed graphite die, and Al was also proposed as a sintering aid to remove impurities.

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

The Parameters of the Ion Flow of Vacuum-Spark Plasma

2009 ◽  
Vol 37 (8) ◽  
pp. 1499-1503 ◽  
Author(s):  
I.L. Muzukin ◽  
I.V. Uimanov ◽  
Y.A. Zemskov
Keyword(s):  
Ion Flow ◽  
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

Targeted Use of SPS Method for Improvement of Thermoelectrics

2014 ◽  
Vol 93 ◽  
pp. 168-173 ◽  
Author(s):  
Lev Petrovich Bulat ◽  
Irina Alexandrovna Nefedova ◽  
Dmitry Alexandrovich Pshenay-Severin
Keyword(s):  
Electric Current ◽  
Sintered Sample ◽  
Energy Balance Equation ◽  
Geometrical Model ◽  
Structural Cell ◽  
Temperature Distributions ◽  
Plasma Sintering ◽  
Experimental Parameters ◽  
Spark Plasma ◽  
Off Time

Use of spark plasma sintering (SPS) allows improving thermoelectric figure of meritZof bulk nanothermoelectrics but required parameters of SPS process for achievement of bestZcan be defined only empirically. In the present study the finite elements method for investigation of electric and thermal processes which occur in volume and on boundaries of sintering particles is applied. As a geometrical model a structural cell of a sintered sample, containing contact “a truncated cone - a plate” has been chosen. Temperature distributions in the volume of a sample depending on amplitude, on-off time ratio and duration of impact of the electric current has been obtained for solid solution based on bismuth telluride using the energy balance equation and the equation of electric current continuity. Under certain conditions nonlinear and nonlocal processes start to arise. The calculated temperature distributions at different sintering conditions were comparing with empirically defined experimental parameters that lead to improved value ofZ. The comparison allows formulating recommendations to achieve best conditions of SPS process for increase ofZ. The present method can be used for management of SPS fabrication process for different application, not only for thermoelectrics.

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