# Na-3Q-fil24.in

# spin-3/2 anti echo and echo amplitude optimization
# versus the first-pulse duration
# in three-pulse amplitude-modulated z-filter 3QMAS,
# the second-pulse duration p2 = 4 micro seconds
# the third-pulse duration p3 = 2 micro seconds

spinsys {
  channels 23Na
  nuclei   23Na
  quadrupole 1 2 1e6 0 0 0 0
}

par {
  spin_rate        5000
  variable tsw     0.25
  sw               1.0e6/tsw
  np               17
  crystal_file     rep10
  gamma_angles     10
  proton_frequency 800e6
  start_operator   24*I1z
  detect_operator  I1c
  verbose          1101
  variable rf      90000
  variable rf3     9300
  variable p2      4 
  variable p3      2 
}

proc pulseq {} {
  global par
  maxdt $par(tsw)

  matrix set 1 coherence {-3 3}
  matrix set 2 coherence {0}

  acq -y        
  for {set i 1} {$i < $par(np)} {incr i} {
    pulse $par(tsw) $par(rf) x
    store 2
    filter 1
    pulse $par(p2)  $par(rf) x
    filter 2
    pulse $par(p3) $par(rf3) x
    acq -y
    reset
    prop 2
  }
}

proc main {} {
  global par

  fsave [fsimpson] $par(name).fid
  puts "Larmor frequency (Hz) of 23Na: "
  puts [resfreq 23Na $par(proton_frequency)]
}

#SIMP
#NP=17
#SW=4000000
#TYPE=FID
#DATA
#0 0
#5.68864026e-06 1.81590148e-09
#0.000175404036 4.78996552e-08
#0.00125103983 3.10814517e-07
#0.00483119806 1.11811006e-06
#0.0132026412 2.88802866e-06
#0.0287972389 6.0087084e-06
#0.0535033682 1.06924424e-05
#0.0880763542 1.68444139e-05
#0.131797918 2.40037622e-05
#0.182424237 3.1413811e-05
#0.236409696 3.82302419e-05
#0.289394029 4.37930719e-05
#0.33692896 4.78260423e-05
#0.375344174 5.04442828e-05
#0.402535371 5.19563867e-05
#0.418392862 5.25788337e-05
#END