CSA Powder Pattern

  CSA powder pattern simulation
****** The System *******
spectrometer(MHz)  500
spinning_freq(kHz) 0.0
channels           C13
nuclei             C13
atomic_coords      *
cs_isotropic       *
csa_parameters     1 1 0.5 0 0 0
j_coupling         *
quadrupole         *
dip_switchboard    *
csa_switchboard    *
exchange_nuclei    *
bond_len_nuclei    *
bond_ang_nuclei    *
tors_ang_nuclei    *
groups_nuclei      *
******* Pulse Sequence ******************************
CHN 1
timing(usec)      (200)512
power(kHz)         0           
phase(deg)         0       
freq_offs(kHz)     0
******* Variables ***********************************
******* Options *************************************
rho0               I1x
observables        I1p
EulerAngles        asgind100o
n_gamma            *
line_broaden(Hz)   *
zerofill           *
FFT_dimensions     1
options            -re
******************************************************
Note the orientation of the CSA tensor: so that powder averaging
over one octant only could be used, it has to be alligned with the crystallite frame.
See also the analytic mode version of this simulation in the
examples-new/analyt directory