# na-filtering-zfilter-24.in # approach: filtering the desired coherence (3Q, -3Q) after the first pulse # and (0Q) after the second pulse # spin-3/2 antiecho and echo amplitude optimization # versus the first-pulse duration # in three-pulse amplitude-modulated z-filter 3QMAS sequence, # the second-pulse duration p2 = 4 micro seconds # the third-pulse duration p3 = 2 micro seconds spinsys { channels 23Na nuclei 23Na quadrupole 1 1 1e6 1 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 24*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 9300 variable p2 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {3 -3} matrix set 2 coherence {0} acq -y for {set i 1} {$i < $par(np)} {incr i} { pulse $par(tsw) $par(rf) x store 2 filter 1 pulse $par(p2) $par(rf) x filter 2 pulse $par(p3) $par(rf3) x acq -y reset prop 2 } } proc main {} { global par fsave [fsimpson] $par(name).fid puts "Larmor frequency (Hz) of 23Na: " puts [resfreq 23Na $par(proton_frequency)] } # SIMP # NP=17 # SW=4000000 # TYPE=FID # DATA # 0 0 # 3.91902455e-06 -6.01436338e-22 # 0.000117094148 -3.36683934e-20 # 0.000795529255 -1.97431906e-19 # 0.00287802458 -6.92744305e-19 # 0.00725731211 -1.69385543e-18 # 0.0144295742 -3.06304835e-18 # 0.0242623665 -4.10688575e-18 # 0.0361384856 -6.54357639e-18 # 0.049323588 -8.56790732e-18 # 0.0632269656 -1.16046893e-17 # 0.0773291382 -1.45734996e-17 # 0.090853889 -1.77007523e-17 # 0.102514048 -2.12698535e-17 # 0.110643958 -1.93655691e-17 # 0.113745863 -2.66142372e-17 # 0.111140994 -2.92243451e-17 # END