Inventors:
Edward Aisawa - Sunnyvale CA
James L. Bertsch - Palo Alto CA
J. Michael Flanagan - Sunnyvale CA
Darrell L. Gourley - San Francisco CA
Val C. Robinson - Morgan Hill CA
Joseph Vandenburg - Mountain View CA
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
H01J 4910
Abstract:
The invention relates to an ionization chamber. More particularly, the invention relates to a mass spectrometer system having an ionization chamber incorporating a corona needle removable from outside the closed ionization chamber. In preferred embodiments, the corona needle is self-positioning and engages and disengages operational or safety electrical connections.