pysrw.lib.srwlib.srwl_wfr_prop_drifts

pysrw.lib.srwlib.srwl_wfr_prop_drifts(_wfr, _dz, _nz, _pp, _do3d=False, _nx=-1, _ny=-1, _rx=0, _ry=0, _xc=0, _yc=0, _pol=6, _type=0, _ord_interp=1)

Propagates wavefront over free space in a number of steps and generates intensity distributions vs (z,x) and (z,y) and possibly (z,x,y) :param _wfr: input/output wavefront :param _dz: longitudinal step size for the drifts :param _nz: number of drift steps to be made :param _pp: list of propagation parameters to be used for each drift step :param _do3d: generate intensity vs (z,x,y) in addition to the cuts (z,x) and (z,y) :param _nx: number of points vs horizontal position (is taken into account if >0) :param _ny: number of points vs vertical position (is taken into account if >0) :param _rx: number of points vs horizontal position (is taken into account if >0) :param _ry: number of points vs vertical position(is taken into account if >0) :param _xc: horizontal position for vertical cut of intensity :param _yc: vertical position for horizontal cut of intensity :param _pol: switch specifying polarization component to be extracted:

=0 -Linear Horizontal; =1 -Linear Vertical; =2 -Linear 45 degrees; =3 -Linear 135 degrees; =4 -Circular Right; =5 -Circular Left; =6 -Total

Parameters:

• _type – switch specifying “type” of a characteristic to be extracted: =0 -“Single-Electron” Intensity; =1 -“Multi-Electron” Intensity; =2 -“Single-Electron” Flux; =3 -“Multi-Electron” Flux; =4 -“Single-Electron” Radiation Phase; =5 -Re(E): Real part of Single-Electron Electric Field; =6 -Im(E): Imaginary part of Single-Electron Electric Field; =7 -“Single-Electron” Intensity, integrated over Time or Photon Energy (i.e. Fluence)

• _ord_interp – interpolation order for final intensity calc.

:return resulting intensity distributions