SPECTRA OF HELIUM-LIKE KRYPTON FROM TOKAMAK FUSION TEST REACTOR PLASMAS

Experiments were conducted on TFTR to study the radiation of krypton w hich will be important for future tokamaks, such as ITER, for the diag nostic of the central ion temperature and for the control of the energ y release from the plasma by radiative cooling. The total krypton radi ation was monitored, and satellite spectra of KrXXXV were recorded wit h a high-resolution crystal spectrometer. Radiative cooling and reduce d particle recycling at the plasma edge region were observed, in reaso nable agreement with modeling calculations which included radial trans port.