# al-split-t1-5Q-antiecho-phase-filtering-p1.in # oQ -> 5Q -> 1Q -> -1Q # approach: filtering the desired coherences (5Q) after the first pulse # and (1Q) after the second pulse # spin-5/2 antiecho amplitude optimization # versus the first-pulse duration # in three-pulse split-t1 phase-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 1 3e6 1 0 0 0 } par { spin_rate 5000 variable tsw 0.5 sw 1.0e6/tsw np 34 crystal_file rep10 gamma_angles 10 proton_frequency 800e6 start_operator 160*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 90000 variable p2 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {5} matrix set 2 coherence {1} acq -y for {set i 1} {$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 # -4.43119478e-06 1.76394324e-17 # -0.000902600978 1.04482799e-18 # -0.0120047749 8.00229801e-17 # -0.0732832167 4.52806343e-17 # -0.258278048 2.57034682e-17 # -0.573500277 3.00189112e-16 # -0.918728706 7.52865874e-16 # -1.19808727 8.09577896e-16 # -1.3958868 -8.53827844e-17 # -1.49660861 -3.74410949e-16 # -1.44668119 5.1239231e-16 # -1.25028069 1.64514438e-15 # -0.991193907 1.1102131e-15 # -0.752111329 -1.18191326e-15 # -0.597707949 -1.01666443e-15 # -0.569609894 3.30011802e-16 # -0.624976297 1.34084889e-15 # -0.602239947 1.66992535e-15 # -0.388176393 -4.53593993e-16 # -0.0729648004 -1.25072324e-15 # 0.164534333 -6.17145336e-17 # 0.214762478 -9.06591105e-16 # 0.0553756893 6.71860482e-17 # -0.30809663 -4.58922768e-16 # -0.777977898 7.90230338e-16 # -1.2039097 2.75249166e-16 # -1.51150325 -6.78109635e-16 # -1.70372523 9.68285335e-16 # -1.82223258 7.37472178e-16 # -1.85343817 -1.45464422e-15 # -1.777069 -1.52736348e-15 # -1.58068804 -1.15355321e-15 # -1.2852044 6.59949977e-16 # END