Advertisement

The European Physical Journal D

, Volume 48, Issue 3, pp 333–342 | Cite as

Theoretical electron impact elastic, ionization and total cross sections for silicon hydrides, SiHx (x = 1, 2, 3, 4) and disilane, Si2H6 from threshold to 5 keV

  • M. Vinodkumar
  • C. Limbachiya
  • K. Korot
  • K. N. Joshipura
Atomic and Molecular Collisions

Abstract.

In this article we report comprehensive calculations of total elastic (Qel), and total ionization cross sections, (Qion), on silicon hydrides SiHx (x = 1–4) and disilane, Si2H6 on electron impact at energies from circa threshold to 2000 eV and total (complete) cross sections (QT) up to 5 keV. Spherical complex optical potential (SCOP) formalism is employed to evaluate Qel and QT. Total ionization cross sections, Qion, are derived from total inelastic cross sections, Qinel, using our complex spherical potential – ionization contribution (CSP-ic) method. Dependence of QT on the dipole polarizability of the target and incident energy is presented for these targets through analytical formula, using which calculation of QT is extended up to 5 keV. Comparison of QT for all these targets is carried out to present a general theoretical picture of collision processes and also to visualize the dependence of QT on the total number of electrons in the target and hence on the geometrical size of the target. Present calculations also provide information on the excitation processes of these targets. Present results are compared with available experimental and other theoretical data wherever available and overall good agreement is observed. There is probably no data for total elastic and total (complete) cross sections for SiHx (x = 2-3) in the present energy range and hence reported for the first time.

PACS.

34.80.Bm Elastic scattering of electrons by atoms and molecules 34.80.Gs Molecular excitation and ionization by electron impact 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. T. Glenewinkel-Mayer, J.A. Bartz, G.M. Thorson, F.F. Crim, J. Chem. Phys. 99, 5944 (1993) CrossRefADSGoogle Scholar
  2. V. Tarnovsky, H. Deutsch, K. Becker, J. Chem. Phys. 105, 6315 (1996) CrossRefADSGoogle Scholar
  3. E. Brüche, Ergeb. exakten Naturwissenschaft. 8, 185 (1929) CrossRefGoogle Scholar
  4. B.H. Bransden, C.J. Joachain, Physics of Atoms and Molecules (Pearson Education, 2003) Google Scholar
  5. C. Szmystkowski, A.M. Krzysztofowicz, J. Phys. B: At. Mol. Opt. Phys. 28, 4291 (1995) CrossRefADSGoogle Scholar
  6. K.N. Joshipura, M. Vinodkumar, Eur. Phys. J. D 5, 229 (1999) CrossRefADSGoogle Scholar
  7. M. Vinodkumar, C. Limbachiya, B. Antony, K.N. Joshipura, J. Phys. B: At. Mol. Opt. Phys. 40, 3259 (2007) CrossRefADSGoogle Scholar
  8. A. Zecca, G.P. Karwasz, R.S. Brusa, Phys. Rev. A 45, 2777 (1992) CrossRefADSGoogle Scholar
  9. O. Sueoka, S. Mori, A. Hamada, J. Phys. B: At. Mol. Opt. Phys. 27, 1453 (1994) CrossRefADSGoogle Scholar
  10. C. Szmystkowski, P. Mozejko, G. Kasperski, J. Phys. B: At. Mol. Opt. Phys. 30, 4363 (1997) CrossRefADSGoogle Scholar
  11. A. Jain, K.L. Baluja, Phys. Rev. A 45, 202 (1992) CrossRefADSGoogle Scholar
  12. Y. Jiang, J. Sun, L. Wan, Phys. Rev. A 52, 398 (1995) CrossRefADSGoogle Scholar
  13. K.N. Joshipura, M. Vinodkumar, C.G. Limbachiya, B.K. Antony, Phys. Rev. A 69, 022705 (2004) CrossRefADSGoogle Scholar
  14. C. Szmytkowski, P. Mozejko, G. Kasperski, J. Phys. B: At. Mol. Opt. Phys. 34, 605 (2001) CrossRefADSMathSciNetGoogle Scholar
  15. M.–T. Lee, M.F. Lima, A.M.C. Sobrinho, I. Iga, Phys. Rev. A 66, 062703 (2002) CrossRefADSGoogle Scholar
  16. K.N. Joshipura, M. Vinodkumar, B.K. Antony, N.J. Mason, Eur. Phys. J. D 23, 81 (2003) CrossRefADSGoogle Scholar
  17. H. Chatham, D. Hils, R. Robertson, A. Gallagher, J. Chem. Phys. 81, 1770 (1984) CrossRefADSGoogle Scholar
  18. E. Krishnakumar, S.K. Srivastava, Contrib. Plasma Phys. 35, 395 (1995) CrossRefGoogle Scholar
  19. R. Basner, M. Schmidt, V. Tarnovsky , K. Becker, Int. J. Mass Spectrom. Ion Proc. 171, 83 (1997) CrossRefADSGoogle Scholar
  20. M.A. Ali, Y.K. Kim, W. Hwang, N.M. Weinberger, M.E. Rudd, J. Chem. Phys. 106, 9602 (1997) CrossRefADSGoogle Scholar
  21. N.O.J. Malcolm, D.L. Yeager, J. Chem. Phys. 113, 8 (2000) CrossRefADSGoogle Scholar
  22. H. Deutsch, K. Becker, R. Basner, M. Schmidt, T.D. Märk, J. Phys. Chem. A 102, 8819 (1998) CrossRefGoogle Scholar
  23. M. Vinodkumar, K.N. Joshipura, C. Limbachiya, N. Mason, Phys. Rev. A 74, 022721 (2006) CrossRefADSGoogle Scholar
  24. M. Vinodkumar, K.N. Joshipura, N.J. Mason, Acta Phys Slovaca 56, 521 (2006) Google Scholar
  25. M. Vinodkumar, K.N. Joshipura, C.G. Limbachiya, B.K. Antony, Eur. Phys. J. D 37, 67 (2006) CrossRefADSGoogle Scholar
  26. A. Jain, Phys. Rev. A 34, 3707 (1986) CrossRefADSGoogle Scholar
  27. A. Jain, J. Phys. B 22, 905 (1988) CrossRefADSGoogle Scholar
  28. C.F. Bunge, J.A. Barrientos, At. Data Nucl. Data Tab. 53, 113 (1993) CrossRefADSGoogle Scholar
  29. R.F.W. Bader, Atoms in Molecules: A Quantum Theory (Clarendon Press, Oxford, 1990) Google Scholar
  30. I. Gradashteyn, I.M. Ryzhik, Tables of Integrals, Series and Products (Associated Press, New York, 1980) Google Scholar
  31. D.R. Lidez, CRC Handbook of Physics and Chemistry, 74th edn. (Chemical Rubber Company, Boca Raton, FL, 1993-94) Google Scholar
  32. From: http://srdata.nist.gov/cccbdb/ Google Scholar
  33. From: http://physics.nist.gov/PhysRefData/Ionization/molTable.html Google Scholar
  34. S. Hara, J. Phys. Soc. Jpn 22, 710 (1967) CrossRefADSGoogle Scholar
  35. X. Zhang, J. Sun, Y. Liu, J. Phys. B: At. Mol. Opt. Phys. 25, 1893 (1992) CrossRefADSGoogle Scholar
  36. G. Staszewska, D.W. Schwenke, D. Thirumalai, D.G. Truhlar, Phys. Rev. A 28, 2740 (1983) CrossRefADSGoogle Scholar
  37. E. Krishnakumar, S.K. Srivastava, J. Phys. B 21, 1055 (1988) CrossRefADSGoogle Scholar
  38. G.P. Karwasz, R.S. Brusa, A. Zecca, Nuovo Cim. 24, 1 (2001) Google Scholar
  39. G. Garcia, F. Manero, Chem. Phys. Lett. 280, 419 (1997) CrossRefADSGoogle Scholar
  40. G. Garcia, F. Blanco, Phys. Rev. A 62, 044702 (2000) CrossRefADSGoogle Scholar
  41. H. Nishimura, H, Tawara, J. Phys. B: At. Mol. Opt. Phys. 24, L363 (1991) Google Scholar
  42. A. Zecca, G.P. Karwasz, R.S. Brusa, Phys. Rev. A 46, 3877 (1992) CrossRefADSGoogle Scholar

Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  • M. Vinodkumar
    • 1
  • C. Limbachiya
    • 2
  • K. Korot
    • 1
  • K. N. Joshipura
    • 3
  1. 1.V. P. & R. P. T. P. Science College, Vallabh VidyanagarGujaratIndia
  2. 2.P. S. Science College, KadiGujaratIndia
  3. 3.Department of PhysicsSardar Patel UniversityGujaratIndia

Personalised recommendations