# al-zfilter-5Q-amplitude-filtering-p1.in # approach: filtering the desired coherences (-5Q and +5Q) after the first pulse # and (0Q) after the second pulse # spin-5/2 echo and antiecho amplitude optimization # versus the first-pulse duration # in three-pulse z-filtered 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 100*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 93000 variable p2 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {-5 5} matrix set 2 coherence {0} acq -y for {set i 1} {$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 # -1.06619426e-08 1.24957285e-10 # -5.04645275e-06 2.94211665e-08 # -0.000168947115 6.80736761e-07 # -0.001838236 5.85910126e-06 # -0.0104673192 2.74176189e-05 # -0.0385944688 7.89670996e-05 # -0.103399008 0.00013469588 # -0.216082003 5.54500618e-05 # -0.36997888 -0.000455920647 # -0.539960111 -0.00179556663 # -0.697500569 -0.00429595706 # -0.829969427 -0.00804069722 # -0.947188808 -0.0127456566 # -1.06995847 -0.0177548527 # -1.21075178 -0.0221663695 # -1.36123207 -0.0250674266 # END