# na-zfilter-phase-filtering-p2.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 second-pulse duration # in three-pulse z-filtered phase-modulated -3Q-MAS sequence, # the first-pulse duration p1 = 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 p1 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {-3} matrix set 2 coherence {0} pulse $par(p1) $par(rf) x store 10 reset acq -y for {set i 1} {$i < $par(np)} {incr i} { reset prop 10 filter 1 pulse [expr ($i)*$par(tsw)] $par(rf) x filter 2 pulse $par(p3) $par(rf3) x acq -y } } 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 # -0.0112840159 -2.80072028e-18 # -0.0875163505 7.43298776e-18 # -0.271780458 3.79429613e-17 # -0.565174379 7.06571095e-17 # -0.92837415 1.09077894e-16 # -1.30223223 1.37092537e-16 # -1.63358641 2.43160645e-16 # -1.89210309 3.5573723e-16 # -2.07208145 4.89393908e-16 # -2.18320891 4.68911528e-16 # -2.23950622 4.80259353e-16 # -2.25370544 4.54787633e-16 # -2.23799674 5.59404857e-16 # -2.2068535 5.23618948e-16 # -2.1771097 5.1865749e-16 # -2.16410041 6.0285365e-16 # END