.~ For analysis of gas, vapor, or particles of matter {6}
468
.~.~ Using thermal ionization
DEFINITION
Classification: 324/468
Using thermal ionization:
(under subclass 464) Subject matter wherein the gas, vapor, etc., to be monitored contacts a heated positive electrode causing positive ion emission, which ions are then collected for analysis by a negative electrode spaced from the heated positive electrode.
(1) Note. The mechanism here differs from thermionic emission ionization below since ionization is not caused by electron collision.
