Micro channel plate gains for Ta10+–Ta44+ ions, measured in the energy range from 3.7 keV/q up to 150.7 keV/q

The procedure of calibration of a detector assembly consisting of a micro channel plate detector operated in a Chevron configuration is described. The analog particle gains of Ta ions with charge states ranging from q=10+ to 44+ and ion impact energies from 3.2 to 153.2 keV/q have been measured. For the investigated range of ion impact energies we have stated that for tantalum charge states of 10+–20+ the secondary ion–electron emission coefficient is dominated by the kinetic emission of electrons. Potential effects being visible for the charge states above 20+.