1 - Nuclear Sciences and Applications - IAEA

IAEA-CN-50/A-V-3-3 303
85 13S 185 235 2 4 6 8 10
k(cm-1)
FIG. 3. Integrated spectra S(f) and S(kp) of (a) density and (b) potential fluctuations.
where kp(o>) is the poloidal wavenumber, yn$ is the coherence between density and
potential fluctuations, ani is the phase difference between them and nms and $„,,, are
their root mean square (rms) values. Figure 4 shows the coherence, the phase angle
and the spectrally resolved particle flux.
The total particle fluxes leaving the plasma because of the turbulence,
T = Er(w), were estimated at 1 and 1.5 T to be 3 x 10 ls and 2 X 10 16 cm^-s" 1 ,
respectively. On the assumption of poloidal and toroidal symmetry in the fluctuations,
a global particle confinement time can be determined from Tpf ~ n