# spinlockx.in (SIMPSON 3.1)

#spinlock pulse X(90°)Y(90°)-detection for positive gyromagnetic ratio nuclei, 
#Mx versus offset varying from 0 to np kHz in steps of 1 kHz

spinsys {
  channels 29Si
  nuclei   29Si
  shift 1 0 0 0 0 0 0
}

par {
  proton_frequency 400e6
  variable tsw     0.5
  sw               1.0e6/tsw
  np               71
  crystal_file     alpha0beta0
  gamma_angles     1
  start_operator   I1z
  detect_operator  2*I1x
  verbose          1101
  variable rf      50000
  variable p1      5
  variable p2      5
}

proc pulseq {} {
  global par

  for {set i 0} {$i < $par(np)} {incr i} {
    
    offset [expr $i*1000]

    pulse $par(p1) $par(rf) x
    pulse $par(p2) $par(rf) -y

    acq

    reset
  }
}

proc main {} {
  global par

  fsave [fsimpson] $par(name).fid

  puts "Larmor frequency (Hz) of 29Si: "
  puts [resfreq 29Si $par(proton_frequency)]
}

#SIMP
#NP=71
#SW=2000000
#TYPE=FID
#DATA
#-2.77555756e-016 0
#0.0198998986 0
#0.0395427695 0
#0.0588439947 0
#0.0777200088 0
#0.0960885802 0
#0.113869089 0
#0.130982797 0
#0.14735312 0
#0.16290588 0
#0.177569563 0
#0.191275563 0
#0.203958413 0
#0.215556012 0
#0.226009839 0
#0.235265155 0
#0.243271193 0
#0.249981335 0
#0.255353277 0
#0.259349177 0
#0.261935791 0
#0.263084596 0
#0.26277189 0
#0.260978886 0
#0.257691782 0
#0.252901819 0
#0.246605323 0
#0.238803726 0
#0.229503575 0
#0.21871652 0
#0.206459291 0
#0.192753651 0
#0.177626339 0
#0.161108995 0
#0.143238063 0
#0.124054688 0
#0.103604591 0
#0.0819379298 0
#0.059109147 0
#0.0351768027 0
#0.0102033941 0
#-0.0157448381 0
#-0.0425981158 0
#-0.0702833402 0
#-0.0987243209 0
#-0.127842014 0
#-0.157554769 0
#-0.187778588 0
#-0.218427386 0
#-0.249413264 0
#-0.280646787 0
#-0.312037263 0
#-0.343493031 0
#-0.374921748 0
#-0.406230684 0
#-0.43732701 0
#-0.468118096 0
#-0.498511799 0
#-0.528416753 0
#-0.557742663 0
#-0.586400582 0
#-0.614303197 0
#-0.641365098 0
#-0.667503053 0
#-0.692636263 0
#-0.716686619 0
#-0.739578945 0
#-0.761241235 0
#-0.781604874 0
#-0.800604854 0
#-0.818179975 0
#END