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chris-x86-64/kmin.py

Created December 8, 2013 05:20
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kmin.py
#!/usr/bin/env python
wavelength = input("Input the wavelength within 0.2~0.55um in um: ")
x = 0.389*wavelength + 0.09426/wavelength -0.3228
sigma = 4.02 * 10**(-28) / wavelength**(4 + x)
lnAB = input("Input the value of lnAB : ")
N = lnAB/sigma
print "cross section sigma/cm^-2 is : ", sigma
print "density N/(number/cm^-2) is : ", N
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