The Field Emission Initiated Vacuum Arc. II. The Resistively Heated Emitter

1953 ◽  
Vol 91 (5) ◽  
pp. 1054-1057 ◽  
Author(s):  
W. W. Dolan ◽  
W. P. Dyke ◽  
J. K. Trolan
Keyword(s):  
Field Emission ◽  
Vacuum Arc ◽  
Resistively Heated

The field emission initiated vacuum arc. II. The resistively heated emitter

Vacuum ◽  
1954 ◽  
Vol 4 (1) ◽  
pp. 126
Author(s):  
W.W. Dolan ◽  
W.P. Dyke ◽  
J.K. Trolan
Keyword(s):  
Field Emission ◽  
Vacuum Arc ◽  
Resistively Heated

The Field Emission Initiated Vacuum Arc. I. Experiments on Arc Initiation

1953 ◽  
Vol 91 (5) ◽  
pp. 1043-1054 ◽  
Author(s):  
W. P. Dyke ◽  
J. K. Trolan ◽  
E. E. Martin ◽  
J. P. Barbour
Keyword(s):  
Field Emission ◽  
Vacuum Arc

Field Emission from Tetrahedrally Bonded Amorphous Carbon

1997 ◽  
Vol 471 ◽  
Author(s):  
W. I. Milne ◽  
J. Robertson ◽  
B. S. Satyanarayanan ◽  
A. Hart
Keyword(s):  
Field Emission ◽  
Amorphous Carbon ◽  
Applied Field ◽  
Vacuum Arc ◽  
Threshold Field ◽  
Nitrogen Doped ◽  
Bonding Ratio ◽  
Current Densities ◽  
Filtered Cathodic Vacuum Arc ◽  
Tetrahedrally Bonded

ABSTRACTA series of tetrahedrally bonded carbon (ta-C) films have been produced using a Filtered Cathodic Vacuum Arc System. The threshold field and current densities achievable have been investigated as a function of sp3/sp2 bonding ratio and nitrogen content. Typical undoped ta-C films have a threshold field of 15–20V/μm and optimally nitrogen doped films exhibit threshold fields as low as ∼ 5 V/μm. Current densities of typically 10-4 A/cm2 at an applied field of 20V/micron were also obtained.

CARBON NANOCOMPOSITE THIN FILMS PREPARED BY FILTERED CATHODIC VACUUM ARC TECHNIQUE

2002 ◽  
Vol 16 (06n07) ◽  
pp. 933-945 ◽  
Author(s):  
B. K. TAY ◽  
Y. H. CHENG ◽  
S. P. LAU ◽  
X. SHI
Keyword(s):  
Surface Energy ◽  
Internal Stress ◽  
Young’S Modulus ◽  
Field Emission ◽  
Young's Modulus ◽  
Vacuum Arc ◽  
Composite Target ◽  
Emission Properties ◽  
Field Emission Properties ◽  
Filtered Cathodic Vacuum Arc

Nanocomposite amorphous carbon (a-C:Me) films including a-C:Ni , a-C:Co , a-C:Ti , a-C:W , a-C:Fe , a-C:Al , and a-C:Si films were deposited using metal-carbon composite target by filtered cathodic vacuum arc (FCVA) technique. Atomic force microscopy (AFM), Raman, and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology and structure of the films. Nanoindenter and surface profilometer were used to determine the hardness, Young's modulus, and internal stress. Contact angle and field emission experiments were used to study the surface energy and field emission properties of the films respectively. The influence of the type of elements and its composition in the target on the structural, mechanical, surface energy, and field emission properties were studied. The incorporation of elements into the films results in the decrease of sp 3 C fraction, internal stress in the deposited films, but the hardness and Young's modulus remains at high level. The effect of non-carbide forming elements in the films on the mechanical properties is more pronounced than that of carbide forming elements. The surface energy of the films increases with incorporating Ni atoms, but decreases after incorporating Fe and Al atoms into the films. After heat treatment, the incorporation of metal into ta-C films can greatly improve the field emission performance.

Field Emission Site Densities of Nanostructured Carbon

2001 ◽  
Vol 675 ◽  
Author(s):  
J B Cui ◽  
J Robertson ◽  
W I Milne
Keyword(s):  
Field Emission ◽  
Applied Field ◽  
Enhancement Factor ◽  
Field Enhancement ◽  
Carbon Films ◽  
Vacuum Arc ◽  
Nanostructured Carbon ◽  
Field Emission Properties ◽  
Site Density ◽  
Enhancement Factors

ABSTRACTThe field emission properties of nanostructured carbon films deposited by cathodic vacuum arc in a He atmosphere have been studied by measuring the emission currents and the emission site density. The films have an onset field of ∼3 V/μm. The emission site density is viewed on a phosphor anode and it increases rapidly with applied field. It is assumed that the emission occurs from surface regions with a range of field enhancement factors but with a constant work function. The field enhancement factor is found to have an exponential distribution.

THE FIELD EMISSION INITIATED VACUUM ARC. I. EXPERIMENTS ON ARC INITIATION

1953 ◽  
Author(s):  
W. P. Dyke ◽  
J. K. Trolan ◽  
E. E. Martin ◽  
J. P. Barbour
Keyword(s):  
Field Emission ◽  
Vacuum Arc
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