MSParams#
- class pyrost.multislice.MSParams(x_min, x_max, x_step, z_step, wl, formula1, density1, formula2, density2, n_min, n_max, focus, mll_sigma, mll_depth, mll_wl, mll_mat1=None, mll_mat2=None)#
Container with the experimental parameters of one-dimensional multislice beam propagation simulation. All the experimental parameters are enlisted in Simulation parameters.
- Parameters
multislice –
A dictionary of multislice simulation parameters. The following elements are accepted:
x_min, x_max : Wavefront span along the x axis [um].
x_step : Beam sampling interval along the x axis [um].
z_step : Distance between the slices [um].
wl : Beam’s wavelength [um].
mll_mat1 (
Optional[Material]) –A dictionary of the first MLL material. The following elements are accepted:
formula : Chemical formula of the material.
density : Atomic density of the material [g / cm^3].
mll_mat2 (
Optional[Material]) –A dictionary of the second MLL material. The following elements are accepted:
formula : Chemical formula of the material.
density : Atomic density of the material [g / cm^3].
mll –
A dictionary of multilayer Laue lens parameters. The following elements are accepted:
n_min, n_max : zone number of the first and the last layer.
focus : MLL’s focal distance [um].
mll_sigma : Bilayer’s interdiffusion length [um].
mll_depth : MLL’s thickness [um].
mll_wl : Wavelength of the MLL [um].
See also
Simulation parameters : Full list of experimental parameters.
- contents()#
Return a list of the attributes stored in the container that are initialised.
- get(attr, value=None)#
Retrieve a dataset, return
valueif the attribute is not found.
- get_kernel(fx_arr)#
Return diffraction kernel for the multislice propagation.
Notes
The diffraction kernel is given by:
\[k(f_x, f_y) = \exp{-j \frac{2 \pi \Delta z}{\lambda} \sqrt{1 - \lambda^2 (f_x^2 + f_y^2)}}\]where \(\Delta z\) — slice thickness, \(f_x, f_y\) — spatial frequencies, and \(\lambda\) — wavelength.
- get_mat1_r(energy)#
Return the Fresnel transmission coefficient of the first material in MLL bilayer.
- get_mat2_r(energy)#
Return the Fresnel transmission coefficient of the second material in MLL bilayer.
- Parameters
[keV]. (Beam's photon energy) –
- Return type
- Returns
Fresnel transmission coefficient.
- get_xcoords(size=None)#
Return a coordinate array of a slice.
- Parameters
size (
Optional[int]) – Size of the array. Equals toMSParams.get_wavefront_size()if it’s None.- Return type
- Returns
Coordinate array [um].
- get_zcoords()#
Return a coordinate array along the propagation axis.
- Return type
- Returns
Coordinate array [um].
- classmethod import_ini(ini_file)#
Initialize the container object with an INI file
ini_file.
- items()#
Return (key, value) pairs of the datasets stored in the container.
- Return type
- Returns
(key, value) pairs of the datasets stored in the container.
- keys()#
Return a list of the attributes available in the container.
- replace(**kwargs)#
Return a new container object with a set of attributes replaced.
- static str_to_list(strings)#
Convert strings to a list of strings.
- to_ini(ini_file)#
Save all the attributes stored in the container to an INI file
ini_file.- Parameters
ini_file (
str) – Path to the ini file.
- values()#
Return the attributes’ data stored in the container.
- Return type
- Returns
List of data stored in the container.