About McStas Download Documentation 
[ Identification  Description  Input parameters  Links ] The
Incoherent sample (such as Vanadium) sample, with quasielastic component OR or global energy transfer.

Name  Unit  Description  Default  
geometry  str  Name of an Object File Format (OFF) or PLY file for complex geometry. The OFF/PLY file may be generated from XYZ coordinates using qhull/powercrust  0  
radius  m  Outer radius of sample in (x,z) plane  0  
xwidth  m  Horiz. dimension of sample (bounding box if off file), as a width  0  
yheight  m  Vert. dimension of sample (bounding box if off file), as a height. A sphere shape is used when 0 and radius is set  0  
zdepth  m  Depth of sample (bounding box if off file)  0  
thickness  m  Thickness of hollow sample  0  
target_x  0  
target_y  m  position of target to focus at  0  
target_z  0  
focus_r  m  Radius of disk containing target. Use 0 for full space  0  
focus_xw  m  horiz. dimension of a rectangular area  0  
focus_yh  m  vert. dimension of a rectangular area  0  
focus_aw  deg  horiz. angular dimension of a rectangular area  0  
focus_ah  deg  vert. angular dimension of a rectangular area  0  
target_index  1  Relative index of component to focus at, e.g. next is +1  0  
pack  1  Packing factor  1  
p_interact  1  MC Probability for scattering the ray; otherwise transmit  1  
f_QE  1  Fraction of quasielastic scattering (rest is elastic)  0  
gamma  1  Lorentzian width of quasielastic broadening (HWHM)  0  
Etrans  meV  Global energytransfer, for use in inelastic settings  0  
deltaE  meV  Width in energy around Etrans, for use in inelastic settings  0  
sigma_abs  barns  Absorption cross section pr. unit cell at 2200 m/s  5.08  
sigma_inc  barns  Incoherent scattering cross section pr. unit cell  5.08  
Vc  AA^3  Unit cell volume  13.827  
concentric  1  Indicate that this component has a hollow geometry and may contain other components. It should then be duplicated after the inside part (only for box, cylinder, sphere)  0  
order  1  Limit multiple scattering up to given order 0 means all (default), 1 means single, 2 means double, ...  0 
AT (  ,  ,  ) RELATIVE  

ROTATED (  ,  ,  ) RELATIVE 
Incoherent.comp
.
[ Identification  Description  Input parameters  Links ]
Generated on 20230919 20:01:36