# al-zfilter-amplitude-selective-24-cycling-p3.in # approach: 24-phase cycling the first pulse, the third pulse and the receiver # spin-5/2 echo and antiecho amplitude optimization # versus the third-pulse duration # in three-pulse z-filtered amplitude-modulated 3Q-MAS sequence, # the first-pulse duration p1 = 4 micro seconds # the second-pulse duration p2 = 4 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 rep100 gamma_angles 10 proton_frequency 800e6 start_operator I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 9300 variable p1 4 variable p2 4 } proc pulseq {} { global par maxdt $par(tsw) acq $par(ph31) pulse $par(p1) $par(rf) $par(ph1) pulse $par(p2) $par(rf) x for {set i 1} {$i < $par(np)} {incr i} { pulse $par(tsw) $par(rf3) $par(ph3) acq $par(ph31) } } proc main {} { global par foreach p {{ 0 0 270}\ { 60 0 90}\ {120 0 270}\ {180 0 90}\ {240 0 270}\ {300 0 90}\ { 0 90 0}\ { 60 90 180}\ {120 90 0}\ {180 90 180}\ {240 90 0}\ {300 90 180}\ { 0 180 90}\ { 60 180 270}\ {120 180 90}\ {180 180 270}\ {240 180 90}\ {300 180 270}\ { 0 270 180}\ { 60 270 0}\ {120 270 180}\ {180 270 0}\ {240 270 180}\ {300 270 0}} { set par(ph1) [lindex $p 0] set par(ph3) [lindex $p 1] set par(ph31) [lindex $p 2] 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 # -0.0705170464 4.29186068e-05 # -0.142311857 0.000173070046 # -0.216410879 0.000392589726 # -0.293427562 0.000701304522 # -0.373368988 0.00109432734 # -0.455533124 0.0015647185 # -0.538571654 0.00211006522 # -0.620698253 0.00273550463 # -0.700043991 0.00344984484 # -0.775035252 0.00425894721 # -0.844579828 0.00516158647 # -0.908059084 0.00615018764 # -0.965274766 0.00721520374 # -1.01640642 0.00834812536 # -1.06200315 0.00953959943 # -1.10302485 0.0107754704 # END