# al-zfilter-amplitude-12p2p3-filtering-p3c.in # approach: filtering the desired coherences (-3Q and +3Q) after the first pulse # and (0Q) after the second pulse # spin-5/2 echo and antiecho amplitude optimization # versus the third-pulse duration # in three-pulse z-filtered amplitude-modulated 3Q-MAS sequence, # the first-pulse duration p1 = 1.5 micro seconds # the second-pulse duration p2 = 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 68 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 p2 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {-3 3} matrix set 2 coherence {0} acq -y pulse $par(p1) $par(rf) x filter 1 pulse $par(p2) $par(rf) x filter 2 for {set i 1} {$i < $par(np)} {incr i} { pulse $par(tsw) $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 # -0.0260488065 2.48479072e-06 # -0.0520335832 1.0011172e-05 # -0.0778789491 2.267172e-05 # -0.103494171 4.04878022e-05 # -0.128779949 6.33314846e-05 # -0.153643815 9.08875736e-05 # -0.178017283 0.000122688721 # -0.201866466 0.000158227561 # -0.225190619 0.00019711396 # -0.248008437 0.000239219529 # -0.270337388 0.000284749936 # -0.292174449 0.000334208602 # -0.313485799 0.000388252702 # -0.334209048 0.000447480912 # -0.354266374 0.000512219074 # -0.373582399 0.000582373323 # -0.392099064 0.000657396894 # -0.409781899 0.000736378715 # -0.426615996 0.000818224276 # -0.44259415 0.000901868779 # -0.457702985 0.000986449858 # -0.471913397 0.00107138762 # -0.48517906 0.00115636372 # -0.49744338 0.00124122987 # -0.508652186 0.00132590047 # -0.518767034 0.00141029188 # -0.527773827 0.00149434519 # -0.535683631 0.00157812058 # -0.542525252 0.0016619113 # -0.548331752 0.00174630514 # -0.553125502 0.0018321254 # -0.55690698 0.0019202268 # -0.55965121 0.00201118929 # -0.561313612 0.00210500333 # -0.561844269 0.00220086513 # -0.561206207 0.00229718665 # -0.559391473 0.00239185207 # -0.556429196 0.00248265406 # -0.552381827 0.00256777149 # -0.547329564 0.0026461232 # -0.541347855 0.00271746744 # -0.534485937 0.00278222366 # -0.52675461 0.00284111453 # -0.51812894 0.00289479855 # -0.508566173 0.00294367101 # -0.498032791 0.00298793725 # -0.486530436 0.00302792554 # -0.474110007 0.00306447852 # -0.460867033 0.00309919726 # -0.446918732 0.00313434122 # -0.432370725 0.00317232441 # -0.417286014 0.0032149348 # -0.401668721 0.0032625458 # -0.3854696 0.00331363551 # -0.368611463 0.00336484866 # -0.35102478 0.00341164057 # -0.332679637 0.00344932089 # -0.313601915 0.00347416118 # -0.293868432 0.00348419899 # -0.273584667 0.00347947957 # -0.25285559 0.00346168596 # -0.231762345 0.00343333377 # -0.210353958 0.00339686268 # -0.18865578 0.00335397228 # -0.166688766 0.00330541739 # -0.144489267 0.0032512585 # -0.122119912 0.00319136238 # END