MAGNETIC EFFECTS ON NOISE IN A GERMANIUM FILAMENT 655 



-12 



-14 



1 8 10 12 14 



MAGNETIC FIELD PARAMETER, ^ 



18 20 



Fig. 2 — Noise change for a filament with equal surfaces as a function of * for 

 various ^. Surface generation. 



where 



«i 



= f 2 ~ ^i)/^i 5 ^2 =(2 +'^2W2 ; 



Oil 



$(l-hro/o)/2 



Now we are in a position to calculate r^fe), the life-time in a magnetic 

 field B. (contained in $), due to an emission at x^\ 



w^i^x, x^ dx -h Wi{x,Xo) dx 



a J Xn 



= (J5i + B^)a + (^2 - B,)x, + ^ U2 -Ai) 



Special Cases 



With the help of (9) and (10) we can now examine special cases. 



1. Surface Emission 



10 



