wu yong, zeng si-liang, duan bin, et al. Relativistic multipole calculations on photoionization of cabon[J]. High Power Laser and Particle Beams, 2006, 18.
Citation:
wu yong, zeng si-liang, duan bin, et al. Relativistic multipole calculations on photoionization of cabon[J]. High Power Laser and Particle Beams, 2006, 18.
wu yong, zeng si-liang, duan bin, et al. Relativistic multipole calculations on photoionization of cabon[J]. High Power Laser and Particle Beams, 2006, 18.
Citation:
wu yong, zeng si-liang, duan bin, et al. Relativistic multipole calculations on photoionization of cabon[J]. High Power Laser and Particle Beams, 2006, 18.
Based on the Dirac-Slater self-consistent-field method, the photoionization cross sections of electrons in 1s, 2s and 2p subshells of carbon atom with different degree of ionization (CI, CII, CIII, CIV, CV, CVI) are calculated from ionization threshold to 300 keV. In the calculation, the multipole and relativistic effects have been included. Variations of cross sections with the photon energy, ionization degree and subshells are investigated. The results are also compared with the data obtained from the Kramers formula with the Gaunt factor correction and the data of Verner et al. The validity of Kramers formula is discussed.
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