# na-zfilter-amplitude-p2half-filtering-p1.in # approach: filtering the desired coherences (-3Q and +3Q) after the first pulse # and (2Q, 0Q, and -2Q) after the second pulse # spin-3/2 echo and antiecho amplitude optimization # versus the first-pulse duration # in three-pulse z-filtered amplitude-modulated 3Q-MAS sequence, # the second-pulse duration p2 = 4 micro seconds # the third-pulse duration p3 = 2 micro seconds spinsys { channels 23Na nuclei 23Na quadrupole 1 1 1e6 1 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 24*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 93000 variable p2 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {-3 3} matrix set 2 coherence {2 0 -2} acq -y for {set i 1} {$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 23Na: " puts [resfreq 23Na $par(proton_frequency)] } # SIMP # NP=17 # SW=4000000 # TYPE=FID # DATA # 0 0 # 3.05870673e-05 3.26582515e-18 # 0.000872526269 -2.45422437e-18 # 0.00549633919 1.41529814e-17 # 0.0176896872 1.60706808e-17 # 0.03721752 -4.11129365e-17 # 0.0551697214 -6.61242974e-17 # 0.0539785835 3.58125733e-17 # 0.0136477441 1.70444165e-16 # -0.0788394354 4.07106679e-17 # -0.22267481 2.03946991e-16 # -0.403369389 2.2692618e-16 # -0.599825219 5.23488987e-16 # -0.793846622 7.66778142e-16 # -0.976372012 3.05669937e-16 # -1.14738273 3.30287588e-16 # -1.31087705 6.64736653e-17 # END