Engineering Papers⌕ Search

Engineering topics

Erpenbach, H.

Publications and source records attributed to Erpenbach, H..

6 records
All sourcesNASA NTRSDOE OSTI
NASA NTRS1975

Method of producing a storage bulb for an atomic hydrogen maser

A storage bulb for an atomic hydrogen maser is produced by coating its internal surface with an emulsion containing both TFE and FEP particles. The emulsion is produced by mixing a first quantity of TFE in an aqueous dispersion with a second quantity of FEP in an aqueous dispersion, with a third quantity of distilled water. The emulsion is poured into the bulb to coat it uniformly so as to form a thin film of emulsion on the bulb's internal surface. After excess emulsion is drained out of the bulb the emulsion in the bulb is dried to remove the water and most of the aqueous matter therefrom. The remaining emulsion is then cured by heating the bulb to a temperature of at least 380 C.

Erpenbach, H.↗
NASA NTRS1969

Improved vacuum deposition apparatus

Improved apparatus enables vacuum deposition of thick metal films on the inside surface of a cylinder. The evaporant is deposited to a uniform thickness and distribution on the inside surface of the substrate without imperfections that would otherwise result from droplet formation.

Erpenbach, H.↗
NASA NTRS1966

Process reduces secondary resonant emission in electronic components

Process reduces secondary electron emission in coaxial connector and in waveguides in the atmosphere. The assembly is placed in a vacuum chamber and is gradually vented to the atmosphere. It is exposed to high voltage, argon gas, and a hydrocarbon gas during the process.

Erpenbach, H.↗