extinction smaller than backscatter at a large size parameter and a large refractive index

[bchen112]

problem:

extinction is smaller than backscatter at certain size parameters

import numpy as np
import miepython
import sys

for i in np.arange(1.01, 10, 0.01):
    qext, qsca, qback, g = miepython.mie(i, np.pi)
    if qback>qext:
        print(i)
        sys.exit()