Page 1 1Page 2 2Page 3 3Page 4 4Page 5 5 E = hν E = hν ΔE = Ef - EiPage 6 6 He+Page 7 7 Radial wave-function, R Radial wave-function, RPage 8 8Page 9 9Page 10 10Page 11 11Page 12 12Page 13 13