Fig. 5

3D isosurface plots of the space-dependent probe absorption in the presence of the NDD effect for the scheme-II with isovalue = 0.6. (a) \(R_{10}\) = 0, \(\Delta _p\) = 3.2 MHz, \(\phi\) = 0; (b) \(R_{10}\) = 0, \(\Delta _p\) = 3.2 MHz, \(\phi\) = 0.08\(\pi\); (c) \(R_{10}\) = 0, \(\Delta _p\) = 3.2 MHz, \(\phi\) = 0.098\(\pi\); (d) \(R_{10}\) = 0.00193 MHz, \(\Delta _p\) = 3.2 MHz, \(\phi\) = 0.098\(\pi\); (e) \(R_{10}\) = 0.00193 MHz, \(\Delta _p\) = 3.205 MHz, \(\phi\) = 0.098\(\pi\). Other common parameters: C = 8, \(R_1\) = \(R_2\) = 1.5 MHz, \(R_3\) = 1.2 MHz, \(\Delta _1\) = \(\Delta _2\) = 0.