K-shell ionization

Takakura, K. Double-strand breaks in DNA induced by the K-shell ionization of calcium atoms. Acta Oncol. 1996, 35 (7), 883-888. 

Fig. 5.23. Ratio of K-shell ionization cross sections for electrons and positrons scattering from silver and copper at various impact energies -----, Born approximation calculation including a Coulomb correction (see text) -, Born...

Figure 2.7 Theoretical level widths for K-shell ionization as a function of the atomic number. The total level width T is the sum of two contributions that come from radiative (fluorescence) decay, TR, and non-radiative (Auger) decay, TA. From [Kra79].

Some partial photoionization cross sections, derived in this way for neon, are shown in Fig. 2.11 as a function of photon energy. The uppermost curve is the total absorption cross section. At the onset of the ionization thresholds for the ejection of Is, 2s and 2p electrons this quantity shows the corresponding absorption edges (see the discussion related to equ. (2.11)). The partition of the total cross section into partial contributions cr(i) clearly demonstrates that the dominant features are due to main photoionization processes described by the partial cross sections satellite transitions from multiple photoionization processes are also present. If these are related to a K-shell ionization process, they are called in Fig. 2.11 multiple KL where the symbol KLX indicates that one electron from the K-shell and X electrons from the L-shell have been released by the photon interaction. Similarly, multiple I/ stands for processes where X electrons from the L-shell are ejected. Furthermore, these two groups of multiple processes are classified with respect to ionization accompanied by excitation, (e, n), or double ionization, ( ,e). If one compares in Fig. 2.11 the magnitude of the partial cross sections for 2p, 2s and Is photoionization at 1253.6 eV photon energy (Mg Ka radiation) and takes into account the different... 

With Rb and RM in Eq. (20), the relativistic factors for the K-shell ionization [58] in line with Gryzinski s relativistic factor [22] are as follows ... 

The calculated EISICS from the MBELL, XCVTS, GKLV, and MUIBED models are compared with available experimental data the K-shell ionization... 

A.K.F. Haque, M.S.I. Sarker, M.A.R. Patoary, M. Shahjahan, M. Ismail Hossain, M.A. Uddin, et al., Modified version of revised Deutsch-Mark model for electron impact K-shell ionization cross sections of atoms at relativistic energies, Int. J. Quantum Chem. 109 (2009) 1442. 

M.A. Uddin, A.K.E Haque, K.R. Karim, A.K. Basak, F.B. Malik, Modified Kolbenstvedt model for the electron impact K-shell ionization cross sections of atoms and ions, Eur. Phys. J. D 37 (2006) 361. 

E. Casnati, A. Tartari, C. Baraldi, An empirical approach to K-shell ionization cross section by electrons, J. Phys. B At. Mol. Opt. Phys. 15 (1982) 155. 

H. Platten, G. Schiwietz, G. Nolte, Cross sections for K-shell ionization of Si and Ar by 4keV to lOkeV electron impact, Phys. Lett. A 107 (1985) 83. 

M. Kamiya, A. Kuwako, R. Ishii, S. Morita, M. Oyamada, Density effect in. K-shell ionization by ultrarelativistic electrons, Phys. Rev. A 22 (1980) 413. 

S.C. McDonald, B.M. Spicer, Density effect in K-shell ionization by relativistic electron impact, Phys. Rev. A 37 (1988) 985. 

D.H.H. Hoffmann, C. Brendel, H. Genz, W. Low, S. Muller, A. Richter, Inner-shell ionization by relativistic electron impact, Z. Phys. A 293 (1979)187 D.H.H. Hoffmann, H. Genz, W. Low, A. Richter, Z and E dependence and scaling behaviour of the K-shell ionization cross section for relativistic electron impact, Phys. Lett. A 65 (1978) 304. 

A.V. Shchagin, V.I. Pristupa, N.A. Khizhnyak, K-shell ionization cross section of Si atoms by relativistic electrons, Nucl. Instrum. Methods B 84 (1994) 9. 

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