Equation Icon  ℏ2 Wq (r ) − ∇∇∇ ⋅----⊕---∇∇∇ ϕ(αq)(rrr) + Uq(r)ϕ (qα)(rrr) + ------ℓℓℓ ⋅σσσ ϕ(αq)(rrr) = ε(αq)ϕ (qα)(rrr), (57 2m q (r) r