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Ordonez, C.A.

Thirteenth international conference on the application of accelerators in research and industry1994

Thirteenth international conference on the application of accelerators in research and industry1994

AbstractAbstract

[en] The kinetic approach to stopping power calculations is explored within the framework of the binary encounter approximation by comparing two different stopping power definitions which take into account the kinetic motion of target particles. The definitions are σ

_{max}left-angle ΔE right-angle and σ_{max}left-angle(u/v_{1}) ΔE right-angle where σ_{max}, is the cross-sectional area for non-adiabatic encounters, ΔE is the energy lost by the projectile per encounter, u is the relative projectile/target-particle speed, and v_{1}is the speed of the projectile. The average is taken over the velocity distribution of the target particles and over the encounter cross section. A comparison of calculations using the two definitions with experimental data will be reported for simple targetsPrimary Subject

Source

Duggan, J.L.; Morgan, I.L. (eds.); 201 p; 1994; p. 47b; University of North Texas; Denton, TX (United States); 13. international conference on the application of accelerators in research and industry; Denton, TX (United States); 7-10 Nov 1994

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Book

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AbstractAbstract

[en] The effect of binary encounters is examined by restricting considerations to a sphere of finite radius B, instead of an infinite one assumed hitherto. (Auth.)

Primary Subject

Source

Duncombe, R.L. (ed.) (Texas Univ., Austin (USA)); International Astronomical Union; p. 315-318; ISBN 90-277-0976-9; ; 1979; p. 315-318; D. Reidel; Dordrecht, Netherlands; International Astronomical Union symposium no. 81 on dynamics of the solar system; Tokyo, Japan; 23 - 26 May 1978

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Book

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Conference

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INIS VolumeINIS Volume

INIS IssueINIS Issue

Novikov, A.P.; Dudchik, Yu.I.

Preliminary program and summaries of reports of the 10. Conference on problems of charged particle beams using for studying substance composition and properties1979

Preliminary program and summaries of reports of the 10. Conference on problems of charged particle beams using for studying substance composition and properties1979

AbstractAbstract

No abstract available

Original Title

Zavisimost' veroyatnosti ionizatsii ehlektronov vnutrennikh obolochek atomov ot pritsel'nogo parametra v modeli binarnykh stolknovenij

Source

Moskovskij Gosudarstvennyj Univ. (USSR). Nauchno-Issledovatel'skij Inst. Yadernoj Fiziki; p. 158-159; 1979; p. 158-159; 10. Conference on problem of charged particle beams using for studying substance composition and properties; Moscow, USSR; 28 - 30 May 1979; Short note; 3 refs.

Record Type

Miscellaneous

Literature Type

Conference

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INIS IssueINIS Issue

Sanders, J.M.

Thirteenth international conference on the application of accelerators in research and industry1994

Thirteenth international conference on the application of accelerators in research and industry1994

AbstractAbstract

[en] The energy of the binary encounter peak, in spectra of electrons emitted at 0 degrees with respect to the projectile beam direction, has been studied to investigate its dependence on the atomic number of the projectile ion. The projectiles all had the same squared velocity of 0.6 MeV/u, and all had the same charge q=7. The Z of the projectiles ranged from 8 to 35, and the target was H

_{2}. The Energy E_{BEP}of the binary encounter peak and also the energy t of the cusp formed by electron loss or electron capture to the projectile continuum (ELC or ECC) were obtained from fits to the spectra. Considerable care was required in fitting the cusp in order to properly ascertain the cusp energy. The energy shift ΔE, defined as the difference between 4t and E_{BEP}, was obtained for each projectile. It is found that the energy shift decreases as the projectile Z increases. This trend is the opposite of that seen for projectile charge where the shift increases as q increases. Such a trend is not well described by the simple elastic scattering model of binary encounter electron productionPrimary Subject

Source

Duggan, J.L.; Morgan, I.L. (eds.); 201 p; 1994; p. 153a; University of North Texas; Denton, TX (United States); 13. international conference on the application of accelerators in research and industry; Denton, TX (United States); 7-10 Nov 1994

Record Type

Book

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Conference

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AbstractAbstract

[en] The use of the binary encounter approximation in the computation of inner shell vacancy production is considered. Comparisons are made with Born approximation results. (10 figures) (U.S.)

Original Title

Calculation of inner shell vacancy production

Primary Subject

Source

Spangler, J.D.; Seaman, G.F. (eds.); Kansas State Univ., Manhattan (USA); p. 133-152; 1973

Record Type

Report

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Reference NumberReference Number

INIS VolumeINIS Volume

INIS IssueINIS Issue

Bickel, D.R.; Ordonez, C.A.; McDaniel, F.D.

Thirteenth international conference on the application of accelerators in research and industry1994

Thirteenth international conference on the application of accelerators in research and industry1994

AbstractAbstract

[en] A kinetic approach is presented for predicting the electronic stopping rate of channeled ions. The approach is also used to evaluate ion stopping in an amorphous target and comparison of the two results shows the characteristic decrease in the stopping cross section for channeled ions. The kinetic approach presented is based on the binary encounter approximation and incorporates the velocity distribution of encountered electrons. The velocity distribution is determined from published Compton profiles for the target electrons. Theoretical stopping power results are compared with experimental data for proton channeling in silicon

Source

Duggan, J.L.; Morgan, I.L. (eds.); 201 p; 1994; p. 96.d; University of North Texas; Denton, TX (United States); 13. international conference on the application of accelerators in research and industry; Denton, TX (United States); 7-10 Nov 1994

Record Type

Book

Literature Type

Conference

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INIS VolumeINIS Volume

INIS IssueINIS Issue

Pokhil, G.P.; Cherdyntsev, V.V.

Preliminary program and summaries of reports of the 10. Conference on problems of charged particle beams using for studying substance composition and properties1979

Preliminary program and summaries of reports of the 10. Conference on problems of charged particle beams using for studying substance composition and properties1979

AbstractAbstract

No abstract available

Original Title

Poteri ehnergii kanalirovannykh chastits v modeli binarnykh stolknovenij s tsepochkami

Source

Moskovskij Gosudarstvennyj Univ. (USSR). Nauchno-Issledovatel'skij Inst. Yadernoj Fiziki; p. 80; 1979; p. 80; 10. Conference on problem of charged particle beams using for studying substance composition and properties; Moscow, USSR; 28 - 30 May 1979; Short note; 2 refs.

Record Type

Miscellaneous

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Conference

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INIS IssueINIS Issue

AbstractAbstract

[en] Based on a single-string continuum model, the axial blocking dips are calculated by an analytical method. The dependences of blocking dips of α particles around the l angle 110 r angle axis in Al single crystals on energy, emission depth of α particles and mean displacement of the decaying nucleus are described. The dependences of the minimum yields and half angles on mean displacement are also presented. The blocking dips calculated by the continuum model are compared with those calculated by the halfway-plane model and the Monte Carlo simulation of the binary scattering model

Record Type

Journal Article

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AbstractAbstract

[en] Comparison is made between the Born approximation and the binary encounter approximation as used in calculating atomic inner shell vacancy production. Selected examples are compared with experimental data. Computations consider only point charges. 10 figures

Primary Subject

Source

Fortune, H.T.; Garcia, J.D.; Greiner, W.; Sellin, I.A.; Kansas State Univ., Manhattan (USA). Dept. of Physics; p. 133-152; 1973

Record Type

Report

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AbstractAbstract

[en] Electron impact double ionization cross sections of noble gas atoms have been calculated in the binary encounter approximation by using Gryzinski's double binary encounter model. The correct expression for σsub(ΔE) including exchange and interference as given by Vriens has been used. Hartree-Fock and hydrogenic velocity distribution functions have been used in considering the ejection of the first and the second atomic electron, respectively. Contribution of ionization from inner-shell has also been taken into account. Calculated values of cross sections are found to be in agreement with the experimental observations. (author)

Primary Subject

Source

36 refs.

Record Type

Journal Article

Journal

Canadian Journal of Physics; ISSN 0008-4204; ; v. 56(9); p. 1255-1260

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