Att= 0, an electron is in the eigen state with n = 1 of a one-dimensional shape well So lr| > a/2 V(x) = { 7/D > |r| 0 At t = 0, a uniform electric field of magnitude Eo is applied for a short time interval t, and then it is removed. Use time-dependent theory of perturbations to calculate the probability that an electron is in an eigenstate with n 2; 3 at time t>T.
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