# al-zfilter-amplitude-24p2p3-filtering-p1a.in # approach: filtering the desired coherences (-1Q and +5Q) after the first pulse # and (-4Q) after the second pulse # spin-5/2 echo and antiecho amplitude optimization # versus the first-pulse duration # in three-pulse z-filtered amplitude-modulated 3Q-MAS sequence, # the second-pulse duration p2 = 4 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 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 $par(tsw) matrix set 1 coherence {-1 5} matrix set 2 coherence {-4} acq -y for {set i 1} {$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 27Al: " puts [resfreq 27Al $par(proton_frequency)] } # SIMP # NP=17 # SW=4000000 # TYPE=FID # DATA # 0 0 # -3.60766552e-05 -6.60192844e-07 # 7.41876834e-05 -1.33228071e-06 # 0.000269517502 -2.8411913e-06 # 0.000513860659 -5.18826995e-06 # 0.000796353497 -7.68991508e-06 # 0.00111531926 -9.61891588e-06 # 0.00146474293 -1.07006054e-05 # 0.00182823724 -1.1322062e-05 # 0.00217783945 -1.25470013e-05 # 0.00247556639 -1.59177697e-05 # 0.00267672641 -2.30878963e-05 # 0.00273452438 -3.54713687e-05 # 0.00260850506 -5.39376469e-05 # 0.00228106547 -7.83567132e-05 # 0.00177929994 -0.000107024887 # 0.00118557335 -0.00013655403 # END