Experiment

An Experiment holds all information that are not measurement specific. Those are the beam, all objects in the beam path and the resonant isotope for calculations of nuclear properties. For non-resonant measurements the photon energy is given in the specific methods.

An Experiment does not have any fittable parameters.

import nexus as nx
import numpy as np

beam = nx.Beam(id="my beam")

analyzer = nx.Analyzer(id="my analyzer")

sample1 = nx.SimpleSample(thickness=3000,
                          composition = [["Fe", 1]],
                          density = nx.Var(7.874, min=7, max=7.874, fit=True, id = "sample density"),
                          id="my sample")

experiment = nx.Experiment(id = "my experiment",
                           beam = beam,
                           objects = [sample1, analyzer],
                           isotope = nx.lib.moessbauer.Fe57)

print(experiment)

Experiment:
  .id: my experiment
  .beam.id: my beam
  .objects:
    index: 0, type: Sample, .id: my sample
    index: 1, type: Analyzer, .id: my analyzer

To retrieve the electronic scattering factor (the electronic amplitude behind the experiment) or the scattering matrix of your experiment use

exp_scattering_factor = experiment.ElectronicAmplitude(energy = 14.4e3)

detuning = np.linspace(-100, 100, 11)

exp_matrix = experiment.Matrix(detunings = detuning,
                               calc_transitions = True)

Notebooks

experiment - nb_experiment.ipynb.

Please have a look to the API Reference for more information.