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CalculateSampleTransmission v1¶
![../_images/CalculateSampleTransmission-v1_dlg.png](../_images/CalculateSampleTransmission-v1_dlg.png)
CalculateSampleTransmission dialog.¶
Summary¶
Calculates the scattering & transmission for a given sample material and size over a given wavelength range.
See Also¶
Properties¶
Name |
Direction |
Type |
Default |
Description |
---|---|---|---|---|
WavelengthRange |
Input |
string |
Mandatory |
Wavelength range to calculate transmission for. |
ChemicalFormula |
Input |
string |
Mandatory |
Sample chemical formula |
DensityType |
Input |
string |
Mass Density |
Use of Mass density or Number density. Allowed values: [‘Mass Density’, ‘Number Density’] |
Density |
Input |
number |
0.1 |
Mass density (g/cm^3) or Number density (atoms/Angstrom^3). Default=0.1 |
Thickness |
Input |
number |
0.1 |
Sample thickness (cm). Default=0.1 |
OutputWorkspace |
Output |
Mandatory |
Outputs the sample transmission over the wavelength range as a function of wavelength. |
Description¶
Calculates the theoretical scattering & transmission for a given sample over a given wavelength range.
The sample chemical formula is input for the SetSampleMaterial algorithm to calculate the cross-sections. The sample mass density/number density & thickness is input to then calculate the percentage scattering & transmission.
A flat plate sample which is perpendicular to the beam is assumed.
Usage¶
Example - Running CalculateSampleTransmission.
ws = CalculateSampleTransmission(WavelengthRange='2.0, 0.1, 10.0',
ChemicalFormula='H2-O')
print('Transmission: {:.6f}, {:.6f}, {:.6f} ...'.format(*ws.readY(0)[:3]))
print('Scattering: {:.6f}, {:.6f}, {:.6f} ...'.format(*ws.readY(1)[:3]))
Output:
Transmission: 0.945063, 0.945051, 0.945040 ...
Scattering: 0.054697, 0.054697, 0.054697 ...
Example - Running CalculateSampleTransmission with a specified number density and thickness.
ws = CalculateSampleTransmission(WavelengthRange='2.0, 0.1, 10.0',
ChemicalFormula='H2-O',
DensityType='Number Density',
Density=0.2,
Thickness=0.58)
print('Transmission: {:.6f}, {:.6f}, {:.6f} ...'.format(*ws.readY(0)[:3]))
print('Scattering: {:.6f}, {:.6f}, {:.6f} ...'.format(*ws.readY(1)[:3]))
Output:
Transmission: 0.001450, 0.001448, 0.001446 ...
Scattering: 0.998506, 0.998506, 0.998506 ...
Categories: AlgorithmIndex | Sample
Source¶
Python: CalculateSampleTransmission.py