Exemplo n.º 1
0
 def sigma(self, keV, OFFSET=0., order=1, distribution="gaussian"):
     """Replacement for Physics.sigma function."""
     tB = self.keV2Bragg(keV, order)
     Q = self.mat_facs[order]*Physics.angular_factor(tB)
     Dtheta = self.getDelta(tB, OFFSET)
     if distribution=="hat":
         weight=Physics.hat(Dtheta, Physics.eta2fwhm(self.eta))
     elif distribution=="gaussian":
         weight=Physics.gaussian(Dtheta, self.eta)
     else: return 0.
     return Q*weight/math.cos(tB)
Exemplo n.º 2
0
 def sigma(self, G=False, order=1, distribution="gaussian"):
     """Interface to the sigma function from Physics."""
     tB = self.xtal.keV2Bragg(self.photon.e)
     ang_fac = Physics.angular_factor(tB)
     Q = self.xtal.mat_facs[order]*ang_fac
     if G is None: G=self.g_needed(order)
     Dtheta = Physics.anglebetween(G, self.xtal.g)
     if distribution=="hat":
         weight=Physics.hat(Dtheta, Physics.eta2fwhm(self.xtal.eta))
     elif distribution=="gaussian":
         weight=Physics.gaussian(Dtheta, self.xtal.eta)
     else: return 0.
     cosine = abs(self.photon.k[2]/self.photon.knorm)
     return Q*weight/cosine