We have obtained an expression for the oscillator frequency in inverse
powers of the nuclear mass number, by equating the spacing of the out
ermost levels of a square well, found to be nearly constant to the osc
illator spacing for which the spacings are also constant. The formulae
for the oscillator frequency obtained here are compared with similar
formulae obtained by other authors. A reasonable qualitative agreement
is found to exist between our formulae of h omega(Lambda) and h omega
(N) and those given in the standard literature, obtained mainly from s
ize considerations. Our derivation is based only on the assumption tha
t a particle-nucleus potential exists. Any reference to particle-hole
states is made purely for a rough comparison of our parameters, otherw
ise nothing hinges on that description.