# al-zfilter-amplitude-selective-40-cycling-p1.in # approach: 40-phase cycling the first and the third pulses and the receiver # spin-5/2 echo and antiecho amplitude optimization # versus the first-pulse duration # in three-pulse z-filtered amplitude-modulated 5Q-MAS sequence, # the second-pulse duration p2 = 4 micro seconds # the third-pulse duration p3 = 2 micro seconds spinsys { channels 27Al nuclei 27Al quadrupole 1 2 3e6 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 I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 9300 variable p2 4 variable p3 2 variable NA 10 variable NC 4 variable deltapA -5 variable deltapC 1 } proc pulseq {} { global par maxdt $par(tsw) acq -y for {set i 1} {$i < $par(np)} {incr i} { pulse $par(tsw) $par(rf) $par(phA) store 2 pulse $par(p2) $par(rf) $par(phB) pulse $par(p3) $par(rf3) $par(phC) acq [expr $par(phREC) - 90] reset prop 2 } } proc main {} { global par set par(phB) 0 for {set jC 0} {$jC < $par(NC)} {incr jC} { set par(phC) [expr $jC*360./$par(NC)] for {set jA 0} {$jA < $par(NA)} {incr jA} { set par(phA) [expr $jA*360./$par(NA)] set par(phREC) [expr $par(deltapA)*$par(phA) + $par(deltapC)*$par(phC)] set g [fsimpson] if [info exists f] { fadd $f $g funload $g } else { set f $g } } } fsave $f $par(name).fid funload $f puts "Larmor frequency (Hz) of 27Al: " puts [resfreq 27Al $par(proton_frequency)] } # SIMP # NP=17 # SW=4000000 # TYPE=FID # DATA # 0 0 # -8.96134278e-10 4.09783318e-13 # -4.1093576e-07 -1.59581202e-10 # -1.31618321e-05 -9.76615436e-09 # -0.000137617074 -1.32421118e-07 # -0.000765709589 -8.38545987e-07 # -0.00282249345 -3.21452386e-06 # -0.00775151103 -8.3734588e-06 # -0.0170739679 -1.5305844e-05 # -0.0318727451 -1.78129447e-05 # -0.0528344129 -2.91147281e-06 # -0.0808893647 4.66312987e-05 # -0.117649189 0.000145439983 # -0.164849507 0.000297826123 # -0.222891079 0.000493960454 # -0.289446932 0.000712122643 # -0.359148753 0.0009253913 # END