Dipole polarizability of hydrogen atom at high pressures

Dipole polarizability of hydrogen atom at high pressures is investigated us ing the model of a trapped atom inside a spherical box with impenetrable su rface. Both upper and lower bounds for the polarizability are obtained usin g accurate variational wavefunctions proposed recently. Buckingham polariza bilities calculated from the Is state wavefunction are shown to be in good agreement with those calculated from the exact values of [r(n)] for cage ra dii less than 2.5. (C) 2001 Elsevier Science B.V. All rights reserved.