# al-zfilter-amplitude-12p2p3-filtering-p2b.in # approach: filtering the desired coherences (-5Q and +1Q) after the first pulse # and (-2Q and 4Q) after the second pulse # spin-5/2 echo and antiecho amplitude optimization # versus the second-pulse duration # in three-pulse z-filtered amplitude-modulated 3Q-MAS sequence, # the first-pulse duration p1 = 1.5 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 34 crystal_file rep100 gamma_angles 10 proton_frequency 800e6 start_operator 12*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 9300 variable p1 1.5 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {1 -5} matrix set 2 coherence {-2 4} 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 27Al: " puts [resfreq 27Al $par(proton_frequency)] } # SIMP # NP=17 # SW=4000000 # TYPE=FID # DATA # 0 0 # -0.00674401081 2.51345561e-05 # -0.0570089348 0.000191319662 # -0.193595607 0.000586351463 # -0.441241229 0.00119904541 # -0.791884895 0.00190955535 # -1.19855531 0.00254434457 # -1.58221571 0.00297606267 # -1.85176254 0.00319031661 # -1.93067104 0.00326378464 # -1.77992231 0.00326937179 # -1.40921162 0.00317379275 # -0.874156468 0.00280055388 # -0.262850018 0.00189232264 # 0.323671256 0.000250058335 # 0.795646901 -0.00210753044 # 1.09926023 -0.00484861799 # 1.23040818 -0.00738914025 # 1.22880077 -0.0091186049 # 1.15444345 -0.00967583739 # 1.0577597 -0.00912383383 # 0.957907402 -0.00793328591 # 0.839360002 -0.00678615129 # 0.667994496 -0.00629791726 # 0.419563936 -0.00676795717 # 0.106266367 -0.00804337402 # -0.214651864 -0.00957068541 # -0.45747131 -0.0106334061 # -0.542473892 -0.010659051 # -0.431635585 -0.00945875834 # -0.148764659 -0.00730575779 # 0.225059848 -0.00481368703 # 0.580444775 -0.00266579458 # 0.815492212 -0.00132302999 # END