# al-zfilter-amplitude-36-cycling-p1.in # approach: 36-phase cycling the first pulse, the second pulse and the receiver # spin-5/2 echo and antiecho amplitude optimization # versus the first-pulse duration # in three-pulse z-filtered amplitude-modulated 3Q-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 rep100 gamma_angles 10 proton_frequency 800e6 start_operator I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 93000 variable p2 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) acq $par(ph31) for {set i 1} {$i < $par(np)} {incr i} { pulse $par(tsw) $par(rf) $par(ph1) store 2 pulse $par(p2) $par(rf) $par(ph2) pulse $par(p3) $par(rf3) x acq $par(ph31) reset prop 2 } } 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 # -0.000231931949 -4.15862579e-07 # -0.00789503031 2.81141054e-06 # -0.0629056863 3.11368994e-05 # -0.264219756 7.88816513e-05 # -0.746282388 0.000132036771 # -1.59264485 0.000317471327 # -2.76919193 0.000953896608 # -4.14562036 0.0023563343 # -5.57673468 0.00450719314 # -6.97313147 0.00699056504 # -8.30233544 0.0094450273 # -9.53753881 0.011988603 # -10.6310648 0.0149561653 # -11.5303496 0.0183116017 # -12.1964666 0.0215726714 # -12.6017732 0.0243159492 # END