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Unformatted text preview: n θ term, the integral over halfsphere surface (i.e. θ =0 to π /2; ϕ =0 to 2 π , ϕ is the angle in xy plane relative to the xaxis): That is, the total flux across any halfsphere surface is conserved and is equal to evaporation rate R evap . Now assume the small planar surface source is not symmetric, such that the angular distribution becomes cos θ× Isin ϕ I (absolute value of sin ϕ ), and flux becomes F K P =CR evap /r 2 cos θ× Isin ϕ I. Calculate the constant C (answer: C=1/2). evap P K R dS F = ∫∫ Deposition rate Here assume n=1 in the cos n θ term, which is close to experiment....
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 Spring '10
 Bo
 Equals sign, Elementary mathematics, Dielectric

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