Physics Help Forum neutron scattered and absorbed problem

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 May 5th 2010, 01:03 PM #1 Junior Member   Join Date: Oct 2009 Posts: 5 neutron scattered and absorbed problem What is the probability a 1 eV neutron will be scattered and absorbed passing through 1 cm of water?
 May 6th 2010, 02:24 PM #2 Senior Member   Join Date: Mar 2010 Location: Lithuania Posts: 105 One can find 1/L = 2.18 cm^-1 here http://www.lanl.gov/orgs/n/n1/panda/00326407.pdf I = I_0 exp( -x/L ) P=(I_0 - I)/I_0 = 1 - exp( -x/L). x = 1 cm we get P = 1 - exp( -2.18 ) = 0.887 or 88.7 %.

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