File:Relaxation transverse magnetization.svg
Summary
| Description |
English: After a 90° excitation pulse the transverse magnetization decays with the transverse relaxation time T2, which is indicated in the graph.
Deutsch: Nach einem 90° Anregungspuls zerfällt die transversale Magnetisierung mit der Relaxationszeit T2. |
| Date | |
| Source | Own work |
| Author | FbrG |
| SVG development | |
| Source code | MATLAB code% general parameters
tEnd = 12000;
t = linspace(0, tEnd, 5000);
T2 = 1500; % ms
%% transverse magnetization
figure('Position', [100 100 1200 500])
hold on
axT2 = gca;
axT2.TickLabelInterpreter = 'latex';
set(axT2, 'Position', [0.2 0.1 0.7 0.8])
plot(t, exp(-t/T2), ...
'LineWidth', 2);
plot([T2 T2], [0 exp(-1)], 'k--', ...
'LineWidth', 1, ...
'color', 0.4*[1 1 1])
plot([0 T2], [exp(-1) exp(-1)], 'k--', ...
'LineWidth', 1, ...
'color', 0.4*[1 1 1])
ylim([0 1.1])
xlim([0 1.025*tEnd])
xticks([T2 1.025*tEnd])
xticklabels({'$T_2$', 't'})
yticks([0 exp(-1) 1])
yticklabels({'$0$', '$1/\mathrm e$', '$M_0$'})
set(gca,'TickLength',[0, 0])
set(gca,'LineWidth', 1)
title('relaxation of transverse magnetization')
axT2.FontSize = 20;
saveas(gcf, 'relaxation transverse magnetization.svg')
|
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