Chapter 11 Interaction and detection of nuclear radiations

Example 11.1 Page no 378

In [43]:
#Given
u=15.64

#Calculation
import math
a=math.log(0.5)**2/u

#Result
print"Linear absorption thickness is", round(a,3),"m"

Linear absorption thickness is 0.031 m

Example 11.2 Page no 378

In [23]:
#Given
V0=1.5*10**5                        #volts
r=0.01                          #cm
b=1                             #cm

#Calculation
import math
E=V0/(math.log(10)*(math.log(b/r)))

#Result
print"Electric field is", round(E*10**-4,2),"*10**4 V/cm"

Electric field is 1.41 *10**4 V/cm

Example 11.3 Page no 378

In [7]:
#Given
l=15.7          #eV
l1=7.8*10**-6    #m
b=0.05/2.0      #m
a=0.00006       #m
q=2.3026

#Calculation
import math
V=((l*a*q)/l1)*math.log10(b/a)

#Result
print"The voltage that must be applied to just produce an avalanche is",round(V,0),"volts"

The voltage that must be applied to just produce an avalanche is 729.0 volts