SIMPSON 4.1.1 program:
REAPDOR data, S curve




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Rotational Echo Adiabatic Passage DOuble Resonance, SIMPSON 4.1.1 program

SIMPSON REAPDOR pulse sequence

The first simulated signal amplitude in the resulting file provided by this SIMPSON program is S0. The second signal amplitude is that of two-rotor-period REAPDOR experiment.

spinsys {
  channels   31P 27Al
  nuclei     31P 27Al
  dipole     1 2 -439  0 0 0
  quadrupole 2 2 2.8e6 0 0 0 0
}

par {
  variable index   1

  np               32
  spin_rate        10000
  proton_frequency 500e6
  start_operator   I1x
  detect_operator  I1p
  method           direct
  crystal_file     rep320
  gamma_angles     25
  sw               spin_rate/2
  variable tsw     1e6/sw
  verbose          1101
  variable rfx     50000
  variable rfy     50000
  variable t180x   0.5e6/rfx
  variable tadia   0.3e6/spin_rate
  variable tr1     0.5e6/spin_rate-t180x
  variable tr2     0.5e6/spin_rate-0.5*t180x-0.5*tadia
}

proc pulseq {} {
  global par

  reset
  delay $par(tr1)
  pulse $par(t180x) $par(rfx) x 0 x
  delay $par(tr1)
  pulse $par(t180x) $par(rfx) y 0 x
  store 1

  reset
  acq
  delay $par(tr1)
  pulse $par(t180x) $par(rfx) x 0 x
  delay $par(tr2)
  pulse $par(tadia) 0 x $par(rfy) x
  delay $par(tr2)
  pulse $par(t180x) $par(rfx) x 0 x
  delay $par(tr1)
  pulse $par(t180x) $par(rfx) y 0 x
  store 2
  acq -x

  for {set i 2} {$i < $par(np)} {incr i} {
    reset
    prop 1
    prop 2
    prop 1
    store 2
    acq -x
  }
}

proc main {} {
  global par
  
  set f [fsimpson]
  fsave $f $par(name),$par(index).fid
}

References

Otgontuul Tsetsgee, Solid-state NMR studies on precursor derived Si-B-C-N and B-C-N ceramics.

 

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Solid-state NMR bibliography for
Aluminum-27
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Arsenic-75
Barium-135/137
Beryllium-9
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Boron-11
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Calcium-43
Cesium-133
Chlorine-35/37
Chromium-53
Cobalt-59
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Deuterium-2
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Germanium-73
Gold-197
Hafnium-177/179
Indium-113/115
Iodine-127
Iridium-191/193
Krypton-83
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Lithium-7
Magnesium-25
Manganese-55
Mercury-201
Molybdenum-95/97
Neon-21
Nickel-61
Niobium-93
Nitrogen-14
Osmium-189
Oxygen-17
Palladium-105
Potassium-39/41
Rhenium-185/187
Rubidium-85/87
Ruthenium-99/101
Scandium-45
Sodium-23
Strontium-87
Sulfur-33
Tantalum-181
Titanium-47/49
Vanadium-51
Xenon-131
Zinc-67
Zirconium-91



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