The average charge of stripped heavy ions

Betz, H. D.; Hortig, G.; Leischner, E.; Schmelzer, Ch.; Städler, Brigitte; Weihrauch, Jörg

doi:10.1016/0031-9163(66)90690-1

Cited by 101 publications

(18 citation statements)

References 3 publications

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“…1. Fraction of electrons bound to the projectile versus velocity of projectile, -this work; --Cabrera-Trujillo et al [14]; · · · Betz et al [25]; -· -Anthony and Lanford [26].…”

Section: Resultsmentioning

confidence: 82%

Stopping Power Calculations for Partially Stripped Projectiles in High Energy Region

2005

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The electronic stopping cross-section is calculated in the spirit of the Bethe theory. Interaction potential between projectile and target is regarded to have a Coulombic character and we have modified it to take into account velocity dependences on a number of bound electrons of projectile and an effective charge of projectile and target. These velocity dependences are obtained from the Bohr adiabatic criterion using the Thomas-Fermi atomic model. We have get the electronic stopping cross-section expression using the Bethe approximation; we obtained the stopping cross-section of C and Al for C, O, and Si ions from this expression and compared our results with experiment and other theoretical calculations.

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“…1. Fraction of electrons bound to the projectile versus velocity of projectile, -this work; --Cabrera-Trujillo et al [14]; · · · Betz et al [25]; -· -Anthony and Lanford [26].…”

Section: Resultsmentioning

confidence: 82%

Stopping Power Calculations for Partially Stripped Projectiles in High Energy Region

2005

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“…Systematic measurements have been performed by the groups at Heidelberg (Betz et al, 1966;Moller et al, 1968), Oak Ridge (Moak et al, 1968;Datz et al, 1970), and Burlington-Cambridge Betz and Wittkower, 1972a) with energetic beams of arsenic, bromine, and iodine. These and other results are listed in Table IV (Dmitriev et al, 1962b) .…”

Section: -31mentioning

confidence: 99%

“…(1961a) 12 Nikolaev et al (1962b) 13 Ryding et al (1969a) 14 Wittkower and Betz (1971b) 15 Ryding et al (1971b) 16 Franzke et al (1972) ( (Moak et al 1968) and Heidelberg (Betz et al 1966, and Moller et al 1968 (Ryding et al 1969b) for charge state measurements with gaseous or solid targets. Detailed characteristics of the differentially pumped gas cell are listed in Table III Table IV.1 and originate from Angert et al (1968) and Moller et al-(1968).…”

Section: -21mentioning

confidence: 99%

Charge States and Charge-Changing Cross Sections of Fast Heavy Ions Penetrating Through Gaseous and Solid Media

1972

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“…simple, semi-empirical expression (Barkas 1963;Betz et al 1966) for the mean charge dependence on energy is used,…”

Section: (Crosses) An Additional Calculation (Minus Signs) Is Explaimentioning

confidence: 99%

Charge-equilibration of Fe ions accelerated in a hot plasma

Kovaltsov

Barghouty

Kocharov

et al. 2001

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Abstract.We examine the energy-dependent rates of charge-changing processes of energetic Fe ions in the hot plasma of the solar corona. For ionization of the Fe-ion projectile in collisions with ambient protons, three different methods of estimating the corresponding ionization cross sections are presented and compared. Proton-impact ionization is found to be significant irrespective of the particular method used. Differences in the proton-impact ionization cross sections' estimates are shown to have little effect in calculating highly nonequilibrium Fe charge states during acceleration, whereas equilibrium charge states are sensitive to such differences. A parametric study of the Fe charge-equilibration comprises (i) impact of the ambient plasma density, and (ii) the energy dependence impact of the acceleration rate upon the charge-energy profiles and upon the estimated values of the density × acceleration-time product. We emphasize potential importance of careful measurements of charge-energy profiles along with ion energy spectra for determining the energy dependence of ion acceleration time and the energy dependence of the leaky-box escape time.

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The average charge of stripped heavy ions

Cited by 101 publications

References 3 publications

Stopping Power Calculations for Partially Stripped Projectiles in High Energy Region

Stopping Power Calculations for Partially Stripped Projectiles in High Energy Region

Charge States and Charge-Changing Cross Sections of Fast Heavy Ions Penetrating Through Gaseous and Solid Media

Charge-equilibration of Fe ions accelerated in a hot plasma

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