The first scientific results of the analysis of the X-ray spectra of flares and active regions in the solar corona obtained by Polish-led spectrometers RESIK and DIOGENESS onboard the CORONAS-F satellite are presented. The instruments were designed and made in the Solar Physics Division of the Space Research Center of the Polish Academy of Sciences (SRC PAS, Wroclaw, Poland). The Institute of Terrestrial Magnetism, Ionosphere, and Radio Wave Propagation (IZMIRAN, Russia) and the Astronomical Institute of the Czech Academy of Sciences also participated in designing the DIOGENESS spectrometer, while IZMIRAN (Russia), Mullard Space Science Laboratory (MSSL, Great Britain), Rutherford Appleton Laboratory (RAL, Great Britain), and Naval Research Laboratory (NRL, United States) contributed to the development of the RESIK spectrometer. In the paper, we give spectra obtained in a number of previously unstudied spectral ranges and a preliminary identification of new spectral lines. The results for the shifts of the X-ray spectral lines observed with the use of a so-called dopplerometer configuration are also presented. Methods for determining the abundances of the rare elements in the solar corona, including chlorine, potassium, and argon, are described.
The maltimode Jahn-Teller effect for the tetrahedral ZT, term coupled with E and T, vibrations is discussed taking into account the spin-orbit interaction. Harmonic vibrations are considered at the trigonal minimum point of the lowest sheet of the adiabatic potential. Using the Green's function method the redetermined projected densities of states are obtained. The one-phonon sideband of the 2E + ,T, transition is expressed in terms of projected densities and compared with the experimental data for 2E 4 2Tz luminescence of ZnS:Cu*+.
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