PChemLabTXT_page_609

PChemLabTXT | page 609 | https://thedailydialectics.com/pdfs/education/chemistry/p-chem/PChemLabTXT/PChemLabTXT.pdf

Confirming Pages ic 598 Chapter XVIII_ Vacuum Techniques gar28420_ch18_587-600 Sec2:598 However, most ionization gauges are thermionic gauges that obtain positive ions through bombardment of the gas molecules with electrons produced thermionically from a heated fila- ment and accelerated by a grid…