ess.sans.normalization.transmission_fraction#

ess.sans.normalization.transmission_fraction(sample_incident_monitor, sample_transmission_monitor, direct_incident_monitor, direct_transmission_monitor)[source]#

Approximation based on equations in CalculateTransmission documentation: (sample_transmission_monitor / direct_transmission_monitor) * (direct_incident_monitor / sample_incident_monitor)

This is equivalent to mantid.CalculateTransmission without fitting. Inputs should be wavelength-dependent.

Parameters:

  • sample_incident_monitor (CleanMonitor[TransmissionRun[TypeVar(ScatteringRunType, ess.reduce.nexus.types.BackgroundRun (int), ess.reduce.nexus.types.SampleRun (int))], ess.reduce.nexus.types.IncidentMonitor (int)]) – The incident monitor data for the sample (transmission) run.

  • sample_transmission_monitor (CleanMonitor[TransmissionRun[TypeVar(ScatteringRunType, ess.reduce.nexus.types.BackgroundRun (int), ess.reduce.nexus.types.SampleRun (int))], ess.reduce.nexus.types.TransmissionMonitor (int)]) – The transmission monitor data for the sample (transmission) run.

  • direct_incident_monitor (CleanMonitor[ess.reduce.nexus.types.EmptyBeamRun (int), ess.reduce.nexus.types.IncidentMonitor (int)]) – The incident monitor data for the direct beam run.

  • direct_transmission_monitor (CleanMonitor[ess.reduce.nexus.types.EmptyBeamRun (int), ess.reduce.nexus.types.TransmissionMonitor (int)]) – The transmission monitor data for the direct beam run.

Returns:

TransmissionFraction[TypeVar(ScatteringRunType, ess.reduce.nexus.types.BackgroundRun (int), ess.reduce.nexus.types.SampleRun (int))] – The transmission fraction computed from the monitor counts.