
104 Electrical Discharge Lamps
In all the above cases, the efcacies were lower than those of existing dis-
charge lamps, and, in some cases, the necessary changes in lamp design and tech-
nology constitute further barriers for the development of such solutions.
Especially for the low-pressure cases, all recent attempts to replace mercury
have focused either on atomic species alone or included the use of molecular
compounds but examined the vapor pressure and the emission properties of
the molecular candidates and not those of the constituent atoms in the case of
atomization. The belief that signicant atomization occurs and that atoms and
diatom ...