# al-shifted-echo-amplitude-80-filtering-p1.in # approach: filtering the desired coherences (-5Q and +5Q) after the first pulse # and (1Q) after the second pulse # spin-5/2 echo and antiecho amplitude optimization # versus the first-pulse duration # in three-pulse shifted-echo amplitude-modulated 5Q-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 rep10 gamma_angles 10 proton_frequency 800e6 start_operator 80*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 93000 variable p2 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {-5 5} matrix set 2 coherence {1} acq -y for {set i 1} {$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 # -4.00373757e-10 -1.8376378e-10 # -8.07890573e-08 -3.32564647e-08 # 1.73580652e-06 -4.92521217e-07 # 5.43525345e-05 -1.88578251e-06 # 0.000370139599 1.49246121e-06 # 0.00104315797 3.84020073e-05 # 0.000777150781 0.0001815053 # -0.00422078434 0.000555422222 # -0.0188998406 0.00130283123 # -0.0451581481 0.00247952688 # -0.0772621615 0.00390962986 # -0.101303845 0.00512257077 # -0.101245754 0.00548453375 # -0.0682724404 0.00449463826 # -0.00699848861 0.00208332752 # 0.0651817992 -0.00124818717 # END