# al-zfilter-amplitude-36-cycling-p3.in # approach: 36-phase cycling the first pulse, the second 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 93000 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) $par(ph2) for {set i 1} {$i < $par(np)} {incr i} { pulse $par(tsw) $par(rf3) x 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 60 90}\ { 60 60 270}\ {120 60 90}\ {180 60 270}\ {240 60 90}\ {300 60 270}\ { 0 120 270}\ { 60 120 90}\ {120 120 270}\ {180 120 90}\ {240 120 270}\ {300 120 90}\ { 0 180 90}\ { 60 180 270}\ {120 180 90}\ {180 180 270}\ {240 180 90}\ {300 180 270}\ { 0 240 270}\ { 60 240 90}\ {120 240 270}\ {180 240 90}\ {240 240 270}\ {300 240 90}\ { 0 300 90}\ { 60 300 270}\ {120 300 90}\ {180 300 270}\ {240 300 90}\ {300 300 270}} { set par(ph1) [lindex $p 0] set par(ph2) [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 # -1.38277879 0.000645762422 # -4.40208148 0.00260389924 # -9.35287374 0.00579076744 # -14.960624 0.00978496391 # -19.2049901 0.0137644414 # -20.4072812 0.0169987026 # -17.9708067 0.0199159826 # -12.6017732 0.0243159492 # -6.07188684 0.031537341 # -0.524895349 0.0402735713 # 2.52904281 0.0465318841 # 2.9331155 0.0457915224 # 1.76994674 0.0357083716 # 0.541030828 0.0175964833 # 0.264615889 -0.00417083692 # 1.04711595 -0.0241359187 # END