Given below are the events taking place in the hollow cathode
lamp (Radiation source in Atomic absorption spectroscopy) 1 DC
voltage is applied across anode and cathode 2 Inert gas ions strike
the cathode and displace the surface metal atoms in the inert gas 3
Further collision of vaporized metal atoms with energetic inert gas
ions result in excited metal atoms emit the characteristic spectrum
of the metal used to construct the cathode 4 Atom of the filler gas
ionized at the anode and attracted by the cathode. Amongst the
given options below, choose the correct sequence of events
a.
(4), (2), (1), (3)
b.
(1), (2), (3), (4)
c.
(1), (4), (2), (3)
d.
(2), (3), (4), (1)