Search NASA⌕ Search
Home/Archive/NASA NTRS

NASA NTRS · 19670039408

Improved surface ionization efficiency by high work function refractory metals and alloys.

Husmann, O. K.
View original source ↗Export metadata ↓

Abstract

Refractory metals and metal alloys analyzed regarding electron work function and threshold temperature for surface ionization in all-metal guard ring diode with directly heated wire

Explore related subjects

REFRACTORY METALTHERMIONIC DIODETHRESHOLD CURRENTSURFACE IONIZATIONALLOYWORK FUNCTION

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Husmann, O. K.. 1966-12-01. Improved surface ionization efficiency by high work function refractory metals and alloys.. https://ntrs.nasa.gov/citations/19670039408

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related reports

NASA NTRS1967

Theoretical studies on the relationship between the thermionic work functions of refractory-metal intermetallic compounds and their electronic and crystal structures Final summary report

The Group VIA-Re binary systems are characterized by the presence of several intermediate phases. The u phase is present in all of the systems, but the a-Mn phases occur in only the Mo-Re and W-Re systems. The occurrence of these intermediate phases appears to be governed largely by electronic factors and is predictable on the basis of electron/atom ratio. The thermionic work functions of the intermediate phase materials were experimentally determined. function and the screening of the outermost electrons in the Group VIA metals was found. A correlation between the work As might be expected for purely metallic substances, the work functions were relatively high, in the range 4. 5 to 5. 0 eV, and in each case were bracketed by the work functions of the pure constituents. A discontinuous change in the average work function with composition is proposed, based on a thermodynamical treatment of the electron vapor.

REFRACTORY METAL↗