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F. F. Karpeshin M. B. Trzhaskovskaya V. V. Kuz’minov 《Bulletin of the Russian Academy of Sciences: Physics》2012,76(8):884-887
Features of double fluorescence spectra generated by double K capture in the 78Kr atom are considered. The energies and bandwidths of fluorescence are calculated. The latter are approximately four times wider for the first and second quanta, respectively, relative to the vacancy hole in the K shell. The fluorescence yields are calculated as well. They are 0.77 and 0.61 for the first and second quanta, respectively, and 0.47 for both quanta simultaneously. 相似文献
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V.I. Nefedov N.P. Sergushin Y.V. Salyn I.M. Band M.B. Trzhaskovskaya 《Journal of Electron Spectroscopy and Related Phenomena》1975,7(2):175-185
Experimental data on the relative intensities of X-ray photoelectron lines of some elements with 22 ? Z ? 56, and the calculations for the photoionization cross-sections for inner levels of some elements with 21 ? Z ? 63 are reported. The relationship between photoionization relative cross-sections and line relative intensities is examined. Theoretical values of the photoionization cross-sections were used in the calculations of relative intensities of molecular valence levels for AO4x? (A = Cl, S, P, Se, As), AF6x? (A = S, Si, Al), COS, CS2 and H2S. 相似文献
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Calculations performed within the advanced MCDF method show that the probability of decay of the 3.5-eV level of $^{229m}$ Th through the resonance electronic bridges exceeds the direct radiative nuclear decay width by a factor of around $5\cdot 10^3$ . Experimental consequences for detection of the delayed soft photons or $\alpha$ particles from the decay of the isomer are discussed. 相似文献
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The probability of internal gamma-ray conversion is theoretically investigated for hydrogen-like ions versus the corresponding neutral atoms. The relevant calculations are performed by the relativistic Dirac-Fock method. The results reveal that the effect of multiple ionization on the coefficients of internal conversion in the K shell is maximal near the ionization threshold and for transitions of high multipole order, where this effect can be as great as a few orders of magnitude. The distinction between the coefficient of internal conversion in the K shell of a neutral atom and that in the respective hydrogen-like ion decreases with increasing transition energy, but it remains sizable for transitions of practical importance. It is found that the ionization of an atom to a hydrogen-like ion with allowance for conversion in external atomic shells may change significantly (by up to eight orders of magnitude) the lifetime of the nucleus being considered. The predicted effects can be observed in experiments with beams of relativistic heavy ions. 相似文献
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I.M. Band A.P. Kovtun M.A. Listengarten M.B. Trzhaskovskaya 《Journal of Electron Spectroscopy and Related Phenomena》1985,36(1):59-68
This paper reports a calculation of the Kβ/Kα X-ray intensity ratio for some manganese and chromium compounds by the Xα scattered wave method. The calculations show that the Kβ/Kα ratio varies from 1.2 to 3.6% for different compounds. The relativistic effects are approximately included in the procedure. 相似文献
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