# al-split-t1-5Q-antiecho-160-phase-cycling-p1.in # oQ -> 5Q -> 1Q -> -1Q # approach: 160-phase cycling the first pulse, the third pulse and the receiver # 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 I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 90000 variable p2 4 variable p3 2 variable N1 20 variable N3 8 variable deltap1 -5 variable deltap3 2 } proc pulseq {} { global par maxdt $par(tsw) acq $par(ph31) for {set i 1} {$i < $par(np)} {incr i} { pulse $par(tsw) $par(rf) $par(ph1) store 2 pulse $par(p2) $par(rf) x pulse $par(p3) $par(rf3) $par(ph3) acq [expr $par(ph31) - 90] reset prop 2 } } proc main {} { global par for {set j1 0} {$j1 < $par(N1)} {incr j1} { set par(ph1) [expr $j1*360./$par(N1)] for {set j3 0} {$j3 < $par(N3)} {incr j3} { set par(ph3) [expr $j3*360./$par(N3)] set par(ph31) [expr $par(deltap1)*$par(ph1) + $par(deltap3)*$par(ph3) ] set g [fsimpson] if [info exists f] { fadd $f $g funload $g } else { set f $g } } } fsave $f $par(name).fid funload $f 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 0 # -0.000902600978 -2.77555756e-15 # -0.0120047749 -4.5519144e-15 # -0.0732832167 -4.21884749e-15 # -0.258278048 -2.77555756e-15 # -0.573500277 -2.20656826e-15 # -0.918728706 4.4408921e-16 # -1.19808727 -2.22044605e-16 # -1.3958868 -1.38777878e-16 # -1.49660861 3.55271368e-15 # -1.44668119 5.55111512e-16 # -1.25028069 3.10862447e-15 # -0.991193907 4.92661467e-15 # -0.752111329 4.74620343e-15 # -0.597707949 5.44009282e-15 # -0.569609894 6.05071548e-15 # -0.624976297 3.40005801e-15 # -0.602239947 7.2858386e-15 # -0.388176393 4.38538095e-15 # -0.0729648004 1.69309011e-15 # 0.164534333 2.67841305e-15 # 0.214762478 4.69069228e-15 # 0.0553756893 4.4408921e-15 # -0.30809663 1.99840144e-15 # -0.777977898 1.44328993e-15 # -1.2039097 -4.1303766e-15 # -1.51150325 -4.91273688e-15 # -1.70372523 -1.11022302e-15 # -1.82223258 -1.80411242e-15 # -1.85343817 -4.80171458e-15 # -1.777069 -1.27675648e-15 # -1.58068804 -2.0539126e-15 # -1.2852044 -6.66133815e-16 # END