# na-zfilter-phase-filtering-p1.in # approach: filtering the desired coherence (-3Q) after the first pulse # and (0Q) after the second pulse # spin-3/2 echo amplitude optimization # versus the first-pulse duration # in three-pulse z-filtered phase-modulated -3Q-MAS 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 48*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 93000 variable p2 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {-3} matrix set 2 coherence {0} acq -y for {set i 1} {$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 # -1.22599029e-05 5.44442033e-18 # -0.00040257911 -2.70390046e-18 # -0.00311771289 5.28890619e-19 # -0.0132193366 1.10583942e-17 # -0.0397666843 8.3783348e-18 # -0.0950483707 1.95850782e-17 # -0.191645832 7.76747748e-17 # -0.338021834 8.11357379e-17 # -0.534517163 1.12793752e-16 # -0.771869605 1.64295914e-16 # -1.03328249 1.38474092e-16 # -1.29924032 1.31461546e-16 # -1.55284734 1.97596404e-16 # -1.78335778 2.07339697e-16 # -1.98678026 3.56153741e-16 # -2.16410041 5.38036636e-16 # END