Energy Distribution of Secondary Electrons in Electron-Impact Ionization of Hydrogen-Like Ions

Nakazaki, Shinobu; Nakashima, Masayuki; Takebe, Hisao; Takayanagi, Kazuo

doi:10.1143/jpsj.60.1565

Cited by 19 publications

(11 citation statements)

References 5 publications

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“…In the case including the electric field, we take r to be in the direction of the track of the incident ion. We estimate E i for ion-and electron-impact ionization processes according to the formula given by Rudd et al [28] and Nakazaki et al [29], respectively. However, the real initial energy of the electron is not Fig.…”

Section: Initial Electron Energiesmentioning

confidence: 99%

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Incorporation of the effect of the composite electric fields of molecular ions as a simulation tool for biological damage due to heavy-ion irradiation

Moribayashi

2011

Phys. Rev. A

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Section: Initial Electron Energiesmentioning

confidence: 99%

“…The value of E i and the angle of the electron emitted here by the electron-impact ionization are determined by the data given by Nakazaki et al [29] and random numbers, respectively. It should be noted that we need to add B to E i to determine the initial electron energy as mentioned in Sec.…”

Section: Data For Cross Sections and Initial Electron Energies Trementioning

confidence: 99%

Incorporation of the effect of the composite electric fields of molecular ions as a simulation tool for biological damage due to heavy-ion irradiation

Moribayashi

2011

Phys. Rev. A

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“…16) (iv) Electron impact ionization processes: We calculate the initial electron energy from the binary encounter dipole (BED) theory 10,20) or use of the data given by Nakazaki et al. 21) After the initial electron energy is determined, the initial direction of the electron velocity is given randomly except for that due to Compton scattering. In Compton scattering, the initial direction is determined from the electron energy, the scattering angles, and the momentum conservation law.…”

Section: Methods Of Calculationsmentioning

confidence: 99%

Monte Carlo Code for the Damage of Bio-Molecules Irradiated by X-Ray Free Electron Lasers: Incorporation of Election Impact Ionization Processes

Moribayashi

2011

Progress in Nuclear Science and Technology

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In this paper, electron impact ionization processes are incorporated in our Monte Carlo (MC) code for the calculation of the damage of the Bio-Molecules by the irradiation of X-Ray free electron lasers (XFELs). The study of this damage is useful for the analysis of three-dimensional structure of the Bio-Molecules using X-Ray free electron lasers because the damage appears as a noise for this analysis. The X-Ray absorption and Compton scattering processes take place after the X-Rays irradiate the target. Then, an electron is produced from atoms and moves in the target. This electron also gives rise to an electron impact ionization process for the other atoms or ions. It is assumed that electron impact ionization processes occur only when the electrons cross a cross section, which is located at the place of the atomic nucleus and is perpendicular to the direction of the electron velocity. The X-Ray flux, wavelength, and pulses of XFEL light pulses treated here are 10 20-21 /pulse/mm 2 , 0.1 nm, and 10 fs, respectively. We compare the frequencies of photo-electron impact ionization processes calculated by our MC code with those by rate equations. The relationship of these frequencies with shapes of targets using various ellipsoids as a target is discussed.

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“…(iv) Electron impact ionization processes: We calculate the initial electron energy from the binary encounter dipole (BED) theory (Kim et al, 2000) or use the data given by Nakazaki et al (Nakazaki et al, 1991). After the initial electron energy is determined, the initial direction of the electron velocity is given randomly except for that due to Compton scattering.…”

Section: Initial Electron Energiesmentioning

confidence: 99%

The Interaction of High Brightness X-Rays with Clusters or Bio-Molecules

Moribayashi¹

2012

X-Ray Spectroscopy

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Energy Distribution of Secondary Electrons in Electron-Impact Ionization of Hydrogen-Like Ions

Cited by 19 publications

References 5 publications

Incorporation of the effect of the composite electric fields of molecular ions as a simulation tool for biological damage due to heavy-ion irradiation

Incorporation of the effect of the composite electric fields of molecular ions as a simulation tool for biological damage due to heavy-ion irradiation

Monte Carlo Code for the Damage of Bio-Molecules Irradiated by X-Ray Free Electron Lasers: Incorporation of Election Impact Ionization Processes

The Interaction of High Brightness X-Rays with Clusters or Bio-Molecules

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