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[ Identification  Description  Input parameters  Output parameters  Links ] The
A sample for AFM or FM magnon scattering
based on cross section expressions from Squires, Ch.8.2

Name  Unit  Description  Default 

radius  m  Outer radius of sample in (x,z) plane  
yheight  m  Height of sample in y direction  
sigma_abs  barns  Absorption cross section at 2200 m/s per atom  
sigma_inc  barns  Incoherent scattering cross section per atom  
a  AA  bcc Lattice constant  
FM  0 means AFM  [1] Flag for whether the order if FM  0 
J1  nn  [meV] spinspin interaction 1  
J2  nnn  [meV] spinspin interaction 2  
D  mev  single ion anisotropy  
s  1  spin  
DW  1  DebyeWaller factor  
T  K  Temperature  
target_x  m  position of target to focus at . Transverse coordinate  0 
target_y  m  position of target to focus at. Vertical coordinate  0 
target_z  m  position of target to focus at. Straight ahead.  0 
target_index  1  relative index of component to focus at, e.g. next is +1  0 
F2  1  magnetic form factor squared  1 
focus_r  m  Radius of sphere containing target.  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 
verbose  print if verbose==1  [1] flag for test printing  0 
Name  Unit  Description  Default 

V_rho  AA^3  Atomic density  
V_my_s  m^1  Attenuation factor due to incoherent scattering  
V_my_a_v  m^1  Attenuation factor due to absorbtion  
DV  
parms 
Magnon_bcc.comp
.
[ Identification  Description  Input parameters  Output parameters  Links ]
Generated automatically by McDoc, Peter Willendrup <peter.willendrup@risoe.dk> / Fri Oct 2 20:53:19 2020