Assuming Fermi charge distribution p(r) = Po prove that the skin thickness in which the (r-R2). 1+exp{ a nuclear charge density p(r) falls from 0.9 p, to 0.1 p. is given by t = 4.4 a where p is the charge density at the centre. Deuteron is a loosely bound system of two nucleons of nearly equal mass that may be represented by a square well of depth Vo and width b. Show that to a good approximation V.B - (2)() is the reduced mass of the system. 2M where M