https://www.mdpi.com/1424-8220/11/5/5202
Compact Electron Gun Based on Secondary Emission Through Ionic Bombardment
We present a new compact electron gun based on the secondary emission through ionic bombardment principle. The driving parameters to develop such a gun are to...
electron gunsecondary emissioncompactbasedionic
https://www.epa.gov/stationary-sources-air-pollution/secondary-aluminum-production-national-emission-standards
Secondary Aluminum Production: National Emission Standards for Hazardous Air Pollutants | US EPA
Mar 4, 2026 - National emission standards for hazardous air pollutants (NESHAP) for new and existing sources at secondary aluminum production facilities. Includes rule...
hazardous air pollutantssecondary aluminumemission standards