# al-split-t1-5Q-antiecho-selective-phase-filtering-p3.in # oQ -> 5Q -> (5Q, 1Q, -3Q) -> -1Q # approach: filtering the desired coherences (5Q) after the first pulse # and (5Q, 1Q, -3Q) after the second pulse # spin-5/2 antiecho amplitude optimization # versus the third-pulse duration # in three-pulse split-t1 phase-modulated 5Q-MAS sequence, # the first-pulse duration p1 = 15 micro seconds # the second-pulse duration p2 = 8.5 micro seconds spinsys { channels 27Al nuclei 27Al quadrupole 1 1 3e6 1 0 0 0 } par { spin_rate 5000 variable tsw 0.25 sw 1.0e6/tsw np 34 crystal_file rep10 gamma_angles 10 proton_frequency 800e6 start_operator 80*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 9000 variable p1 15 variable p2 8.5 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {5} matrix set 2 coherence {5 1 -3} 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 23Na: " puts [resfreq 27Al $par(proton_frequency)] } # SIMP # NP=17 # SW=4000000 # TYPE=FID # DATA # 0 0 # -0.00614629303 7.58803401e-17 # -0.0243737015 -2.17702047e-16 # -0.0542301932 -2.88318212e-16 # -0.0952216659 -4.30570182e-16 # -0.146949295 -4.95017159e-16 # -0.20911255 -4.60167625e-16 # -0.281365653 -8.02593972e-16 # -0.36316571 -9.81324223e-16 # -0.453769068 -1.16504096e-15 # -0.55235374 -1.52463082e-15 # -0.658119522 -1.53240185e-15 # -0.770320559 -1.71671939e-15 # -0.888300885 -1.799278e-15 # -1.01151624 -1.75465301e-15 # -1.13944063 -1.91245325e-15 # -1.2714173 -1.83689704e-15 # -1.40665567 -1.78012842e-15 # -1.54436361 -1.49203864e-15 # -1.68377368 -1.45340985e-15 # -1.82401679 -1.72207451e-15 # -1.96406026 -1.67150642e-15 # -2.10278836 -1.58682515e-15 # -2.23910058 -1.95522847e-15 # -2.37198657 -2.15879969e-15 # -2.50060316 -2.23673537e-15 # -2.62428227 -2.24769776e-15 # -2.74245049 -2.32082143e-15 # -2.85459994 -2.16229632e-15 # -2.96037071 -2.17140727e-15 # -3.05960406 -2.44382701e-15 # -3.15227936 -2.54574677e-15 # -3.23845233 -2.72284803e-15 # -3.31828167 -2.81817044e-15 # END