The evaporation of lanthanum hexaboride

1965 ◽  
Vol 4 (8) ◽  
pp. 661-663
Author(s):  
S. P. Gordienko ◽  
G. V. Samsonov ◽  
V. V. Fesenko
Keyword(s):  
Lanthanum Hexaboride

Long-pulse plasma source for SMOLA helical mirror

2021 ◽  
Vol 87 (2) ◽  
Author(s):  
Ivan A. Ivanov ◽  
V. O. Ustyuzhanin ◽  
A. V. Sudnikov ◽  
A. Inzhevatkina
Keyword(s):  
Magnetic Field ◽  
Gas Flow ◽  
Supply Voltage ◽  
Hydrogen Plasma ◽  
Plasma Source ◽  
Lanthanum Hexaboride ◽  
Plasma Stream ◽  
Plasma Parameters ◽  
Plasma Properties ◽  
Plasma Gun

A plasma gun for forming a plasma stream in the open magnetic mirror trap with additional helicoidal field SMOLA is described. The plasma gun is an axisymmetric system with a planar circular hot cathode based on lanthanum hexaboride and a hollow copper anode. The two planar coils are located around the plasma source and create a magnetic field of up to 200 mT. The magnetic field forms the magnetron configuration of the discharge and provides a radial electric insulation. The source typically operates with a discharge current of up to 350 A in hydrogen. Plasma parameters in the SMOLA device are Ti ~ 5 eV, Te ~ 5–40 eV and ni ~ (0.1–1)  × 1019 m−3. Helium plasma can also be created. The plasma properties depend on the whole group of initial technical parameters: the cathode temperature, the feeding gas flow, the anode-cathode supply voltage and the magnitude of the cathode magnetic insulation.

scholarly journals Hot electron emission from waveguide integrated lanthanum hexaboride nanoparticles

2021 ◽  
Vol 118 (7) ◽  
pp. 071108
Author(s):  
Fatemeh Rezaeifar ◽  
Hyun Uk Chae ◽  
Ragib Ahsan ◽  
Rehan Kapadia
Keyword(s):  
Electron Emission ◽  
Lanthanum Hexaboride ◽  
Hot Electron

Large‐area lanthanum hexaboride electron emitter

1985 ◽  
Vol 56 (9) ◽  
pp. 1717-1722 ◽  
Author(s):  
D. M. Goebel ◽  
Y. Hirooka ◽  
T. A. Sketchley
Keyword(s):  
Lanthanum Hexaboride ◽  
Large Area ◽  
Electron Emitter

Experiences with lanthanum hexaboride cathode guns

1997 ◽  
Vol T71 ◽  
pp. 157-160 ◽  
Author(s):  
Staffan Rosander ◽  
Olle Wernholm
Keyword(s):  
Lanthanum Hexaboride

Examination of field emission from Lanthanum Hexaboride coated knife edge cathodes

2011 ◽  
Author(s):  
Matt Kirley ◽  
Bozidar Novakovic ◽  
Marcus Weber ◽  
Nishant Sule ◽  
John Scharer ◽  
...  
Keyword(s):  
Field Emission ◽  
Lanthanum Hexaboride ◽  
Knife Edge

Lanthanum Hexaboride Nanoobelisks

2007 ◽  
Vol 19 (26) ◽  
pp. 6379-6381 ◽  
Author(s):  
Joseph Reese Brewer ◽  
Nirmalendu Deo ◽  
Y. Morris Wang ◽  
Chin Li Cheung
Keyword(s):  
Lanthanum Hexaboride

The adsorption of lanthanum hexaboride on tantalum

Vacuum ◽  
1979 ◽  
Vol 29 (6-7) ◽  
pp. 241-244 ◽  
Author(s):  
JG Ociepa ◽  
S Mróz
Keyword(s):  
Lanthanum Hexaboride

Controlled photo-discharge of dust in a complex plasma

2021 ◽  
Vol 87 (2) ◽  
Author(s):  
Michael McKinlay ◽  
Edward Thomas
Keyword(s):  
High Intensity ◽  
Dusty Plasmas ◽  
Lanthanum Hexaboride ◽  
Magnetized Plasma ◽  
Background Plasma ◽  
Proof Of Concept ◽  
Langmuir Probes ◽  
Complex Plasma ◽  
Dust Charge ◽  
Selection Of

One of the limitations in studying dusty plasmas is that many of the important properties of the dust (like the charge) are directly coupled to the surrounding plasma conditions rather than being determined independently. The application of high-intensity ultraviolet (UV) sources to generate discharging photoelectric currents may provide an avenue for developing methods of controlling dust charge. Careful selection of the parameters of the UV source and dust material may even allow for this to be accomplished with minimal perturbation of the background plasma. The Auburn Magnetized Plasma Research Laboratory (MPRL) has developed a ‘proof-of-concept’ experiment for this controlled photo-discharging of dust; a high-intensity, near-UV source was used to produce large changes in the equilibrium positions of lanthanum hexaboride ( $\textrm {LaB}_6$ ) particles suspended in an argon DC glow discharge with negligible changes in the potential, density and temperature profiles of the background plasma. The shifts in equilibrium position of the dust are consistent with a reduction in dust charge. Video analysis is used to quantify the changes in position, velocity and acceleration of a test particle under the influence of the UV and Langmuir probes are used to measure the effects on the plasma.

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