Stopping power ,Z_1^3- Parameter, Bloch and shell corrections in Bethe formula for protons and Helium ions in DNA and liquid water.

Authors

  • ishraq ahmed shakir al-mustansiriyah university collage of science physics Department

DOI:

https://doi.org/10.23851/mjs.v29i1.88

Abstract

The Barkas effect came because of target electrons due to responding to the approaching particle and slightly changing the orbits before occur from interaction of energy loss (denominate target polarization). At high energies (above 20 10   insignificant because the ion moving too fast to cause initial motion the target electrons where at low energies  the Barkas effect is investigated.[1].

In present work stopping power, Barkas effects, Bloch and shell corrections have been investigated for the interaction of protons and Helium ions in DNA and liquid water. Braggs rule has been used on each element in DNA and liquid water to determine the parameters correction in Bethe-Bloch formula using Ziegler’s semi-empirical formula [1]. 

Author Biography

  • ishraq ahmed shakir, al-mustansiriyah university collage of science physics Department
    physics Department

References

The stopping of energetic light ions in elemental matter,J.F.Ziegler ,J.Appl.Phys/Rev.Appl.phys.,85,1249-1272(1999). DOI: https://doi.org/10.1063/1.369844

H.A.Bethe,Ann.phys.(lepizig)5,325(1930);Fano,Annu.Rev.Nucl.Sci.13,1(1963).

W.H. Barkas,W.Birnbaum ,and FM.Smith,phys.Rev.101,778(1956). DOI: https://doi.org/10.1103/PhysRev.101.778

W.H.Barkas, N.Dyer and H.H.Heckmann, phys, Rev.Lett. 11, 26(1963). DOI: https://doi.org/10.1103/PhysRevLett.11.26

H.H.Heckman and P.J.Lindstrom, phys, Rev.Lett.22, 871 (1969). DOI: https://doi.org/10.1103/PhysRevLett.22.871

W.Wilhelm,H.Daniel,and F.J Hartmann,phys .Rev.Lett.98B,33(1981). DOI: https://doi.org/10.1016/0370-2693(81)90361-0

Particle Penetration and Radiation Effects: General Aspects and Stopping of swift point charges Besenbacher (1981).

Bragg .W.H.and Kleemang B.(1905) philios.mag.and J.of science .

F.Ziegler, J.P. Biersack [SRIM.com] contributions by M.Ziegler, D.J.Marwick,G.A.Cuomo, W.A. Porter, S.A.Harrison [SRIM-2003].

Energy Loss of Hydrogen- and Helium-Ion Beams in DNA calculations Based on a Realistic Energy-Loss Function of the Target

, 247–255 (2011).

Downloads

Published

31-10-2018

Issue

Section

Physical Sciences

How to Cite

[1]
ishraq ahmed shakir, “Stopping power ,Z_1^3- Parameter, Bloch and shell corrections in Bethe formula for protons and Helium ions in DNA and liquid water”., Al-Mustansiriyah Journal of Science, vol. 29, no. 1, pp. 155–159, Oct. 2018, doi: 10.23851/mjs.v29i1.88.

Publication Dates