Analytical Method for Determining Transmission and Absorption of Time-Dependent Radiation Through Thick Absorbers 3: Absorber With Radioactive Daughter Products Page: 11 of 18

                                
NACA TN 2108

R  2   = 0.2956 11 2a
3 2 a = 0.1853 11 2 a
The neutron intensities may all be expressed in terms of the
3 Mev activity of the second-generation daughter product in the
second station. Thus,
4 3 n   p2 3 n 1
3 3 n= _    p2 3'n 1
9
,2 3 n = p2   3 n 1
R2 3 n   10 P2 3 n 1
R 93-9P
9
3 3 n   1 2 3 n 1
9
The calculations of the intensities of the gamma-rays are more
complicated; the methods of Case II (reference 1)'are applicable to.
these computations and yield' the following results:
12 1 7 = 0.9000 Il 1 7
12 72  = 0.9000 I  2 7
13 1 7 = p2 1 7 + 0.81 I1 1 7
13 2 7 = 0.7200 Il 2 7
14 1 7 = 0.8000 P2 1 7 + 0.6480 1 1 r
14 2 7 = 0.6480 Il 2 7
Ri 2 7 = 3 1    = 0

R2 1 7   p2 1

10