# al-zfilter-phase-72-filtering-p1.in # approach: filtering the desired coherence (+3Q) after the first pulse # and (0Q) after the second pulse # spin-5/2 echo amplitude optimization # versus the first-pulse duration # in three-pulse z-filtered phase-modulated +3Q-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 rep100 gamma_angles 10 proton_frequency 800e6 start_operator 72*I1z detect_operator I1c verbose 1101 variable rf 90000 variable rf3 93000 variable p2 4 variable p3 2 } proc pulseq {} { global par maxdt $par(tsw) matrix set 1 coherence {3} matrix set 2 coherence {0} acq -y for {set i 1} {$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 23Na: " puts [resfreq 23Na $par(proton_frequency)] } # SIMP # NP=17 # SW=4000000 # TYPE=FID # DATA # 0 0 # -0.000383302408 -2.2828029e-06 # -0.0110414291 -1.7625907e-05 # -0.0775946961 1.16817187e-05 # -0.305910658 0.000383378055 # -0.852811823 0.00176919963 # -1.85135063 0.00496110645 # -3.32269745 0.0102420333 # -5.15766427 0.0171766247 # -7.17710254 0.0251959183 # -9.2200051 0.0342787041 # -11.1906673 0.0449464476 # -13.0373594 0.0575215227 # -14.7056494 0.0713845072 # -16.1184979 0.0851041114 # -17.1935389 0.0973900971 # -17.8665962 0.107853442 # END