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https://github.com/wassname/simpeg.git
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Brendan Smithyman
20 lines
624 B
Python
20 lines
624 B
Python
from __future__ import division
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from __future__ import unicode_literals
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from __future__ import print_function
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from __future__ import absolute_import
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from future import standard_library
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standard_library.install_aliases()
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from past.utils import old_div
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import numpy as np
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from scipy.constants import mu_0, pi
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from scipy.special import erf
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def hzAnalyticDipoleT(r, t, sigma):
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theta = np.sqrt(old_div((sigma*mu_0),(4*t)))
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tr = theta*r
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etr = erf(tr)
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t1 = (old_div(9,(2*tr**2)) - 1)*etr
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t2 = (old_div(1,np.sqrt(pi)))*(old_div(9,tr) + 4*tr)*np.exp(-tr**2)
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hz = old_div((t1 - t2),(4*pi*r**3))
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return hz
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