A slab of the absorber is exactly one mean free path thick for a beam of certain incident particles. What percentage ofn the particles will emerge from the slab?n According to equation 12.21, the mean free path is l=1/ns. Plugging l into equation 12.20 givesn N N.n 0n exp( ) n.s.l N N .n 0n expn ( ) n.sn n.sn Nn N 0n exp( 1)n Fraction Nn N 0n Fraction exp( 1) Fraction = 0.368n

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The virgin beam which has not interacted emerging from a slab of thi... View the full answer