engleski

X-ray spectra of tetrahedral nanodiamonds

The existence of diamond nanoparticles close to the Herbig Ae/Be stars Elias 1 and HD 97048 was proposed from their infrared spectra. IR intensities of astrophysical spectra correspond to those measured for large tetrahedral nanodiamonds. Elias 1 and HD 97048 are known as sources of X-ray emission. Using density functional theory methods we calculate X-ray spectra of two tetrahedral nanodiamonds: C26H32 and C51H52. We also study and test our methods on methane for which extensive X-rays laboratory data are available. (Calculations presented in this talk are done in the collaboration with Aleksandar Maksimović, Rudjer Bošković Institute).

nanodiamonds, x-ray spectra, density functional theory, interstellar medium, active galactic nuclei, Herbig Ae/Be stars

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