1 = I I 37 ~ 1 x °» 27263 



[l - 0.879] ( - 0.46120X0.00604) 



[l - (2X0.879) + (2X0.143)1 (0.50000) (0.00604) 2 



[l - (3)(0.879) + (3X2X0.143) - (3)(2)( - 0.00239)1 



( - 0.46397X0.00604) 3 



Tl - (4X0.879) ♦ (4)(3)(0.143) - (4)(3)(2)( - 0.00239)1 



(0.38944)(0.00604) 4 



[l - (5X0.879) + (5X4X0.143) - (5)(4)(3)( - 0.00239)1 



( - 0.29404)(0.00604) 5 



I 2.76 ~ i x 0.27263 



+ [l - 0.6991 ( - 0.46120)(0. 00413) 



+ [l- (2)(0.699)+(2)(0.026)l (0.50000)(0.00413) 2 



+ Tl - (3)(0.699)+(3)(2)(0.026) - (3)(2)( - 0.001045)1 



( - 0. 46397X0. 00413) 3 



b- 



(4)(0.699)+ (4X3X0.026) - (4)(3)(2) 

 ( - 0.001045) 1 (0.38944)(0.00413) 

 + [l - (5)(0.699) + (5)(4.).(0.026)-(SK4)(3)(-0.001045)l 

 ( - 0.29404) (0.00413) 5 

 After combining terms the solution is shown below: 



I = i u37 ~ 2.7263 x lO" 1 ^^? Xl0" 4 r8,59 x 10 +7.83 x 10" 8 - 

 3.36 x 10~ 10 + 9.28 x 10" 13 

 + I ? 76 ~ 2.7263 x 10" 1 - 5.73 x 10 -4 - 2.95 x 10 " 6 + 2.77 x 



10" 8 - 1.652 x 10" 10 + 6.78 x 10~ 13 



It may be seen readily that the contribution from all terms below the 

 second term are negligible due to the geometry of the particular configuration; 

 therefore only the first two terms are used for further calculations. 



Once the detector response has been calculated, the dose rate may be 

 calculated as follows: 



24 



