def METHOD_NAME(self):
    """ Provide a scalar of dR with a non-magnetic sample """
    self.expt.simulate_data(noise=2.5)
    self.assertEqual(len(self.expt.probe.dR), len(self.q_values))
    ratio_i = self.expt.probe.dR[0] / self.r_i
    ratio_f = self.expt.probe.dR[-1] / self.r_f
    self.assertAlmostEqual(ratio_i, 0.025)
    self.assertAlmostEqual(ratio_f, 0.025)