Yes, but not the Argon, it does not get excited enough and produces nil light in fluro's
and is why there is no Argon peak in a fluro SED curve. Mercury produces most of the
light, say + 95 %. and there is some temporary ionization, there has to be, if not where
do all the electrons come from that are flying around. Ionization is when something losses
or gains an electron. Even once ionized the electrons can fall/come back into orbit..


"These electrons
travel at high speed from one electrode to another."

"This release of electrons from Mercury produces UV light"
--
Boomer

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"Pszemol" wrote in message ...
: Right - I was mistaken - atoms of gases in the tube do not get
: ionized but only get excited and then when electrons return to their
: original state they emit UV - sorry Boomer, you are still The Oracle! :-))