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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _photon_integrand(self, x, Egamma):
 """ Integrand of Eq. 72 """

        try:
            return (
                self._sigma_inel(Egamma / x)
                * self._particle_distribution((Egamma / x))
                * self._Fgamma(x, Egamma / x)
                / x
            )
        except ZeroDivisionError:
            return np.nan