Formation of H̅ in p̅-Ps collisions embedded in plasmas

  • Kuru Ratnavelu
  • Arijit Ghoshal
  • Sujay Nayek
  • Arka Bhattacharya
  • Mohd Zahurin Mohamed Kamali
Regular Article
Part of the following topical collections:
  1. Topical Issue: Advances in Positron and Electron Scattering

Abstract

Screening effects of plasmas on the formation of antihydrogen (H̅) in an arbitrary s-state from the ground state of the positronium atom (Ps) by antiproton (p̅) impact have been studied within the framework of charge-conjugation and time-reversal invariance. Two types of plasma environments have been considered, namely weakly coupled plasma and dense quantum plasma. For weakly coupled plasma, the interactions among the charged particles in plasma have been represented by Debye-Huckel screening model, whereas for dense quantum plasma, interactions among the charged particles in plasma have been represented by exponential cosine-screened Coulomb potentials. Effects of plasma screening on the antihydrogen formation cross section have been studied in the energy range 15–400 keV of incident antiproton. For the free atomic case, our results agree well with some of the most accurate results available in the literature.

Graphical abstract

References

  1. 1.
    J.C. Weisheit, Applied Atomic Collision Physics, edited by C.F. Barnett, M.F.A. Harrison (Academic, New York, 1984), Vol. 2Google Scholar
  2. 2.
    J.C. Weisheit, Adv. At. Mol. Phys. 25, 101 (1988)ADSCrossRefGoogle Scholar
  3. 3.
    M.S. Murillo, Atomic Processes in Plasmas, AIP Conf. Proc. No. 381, edited by A.L. Osterheld, W.H. Goldstein (American Institute of Physics, Woodbury, New York, 1996)Google Scholar
  4. 4.
    Y.-D. Jung, Phys. Plasmas 2, 332 (1995)ADSCrossRefGoogle Scholar
  5. 5.
    Y.-D. Jung, Phys. Plasmas 4, 21 (1997)ADSCrossRefGoogle Scholar
  6. 6.
    Y.-D. Jung, Eur. Phys. J. D 12, 351 (2000)ADSCrossRefGoogle Scholar
  7. 7.
    C.G. Kim, Y.-D. Jung, Phys. Plasmas 5, 2806 (1998)ADSCrossRefGoogle Scholar
  8. 8.
    L. Liu, J.G. Wang, R.K. Janev, Phys. Rev. A 77, 042712 (2008)ADSCrossRefGoogle Scholar
  9. 9.
    Y.Y. Qi, J.G. Wang, R.K. Janev, Phys. Rev. A 78, 062511 (2008)ADSCrossRefGoogle Scholar
  10. 10.
    A. Ghoshal, Y.K. Ho, Eur. Phys. J. D 55, 581 (2009)ADSCrossRefGoogle Scholar
  11. 11.
    A. Ghoshal, Y.K. Ho, Phys. Scr. 83, 065301 (2011)ADSCrossRefGoogle Scholar
  12. 12.
    S. Kar, Y.K. Ho, J. Phys. B 44, 015001 (2011)ADSCrossRefGoogle Scholar
  13. 13.
    S. Chakraborty, Y.K. Ho, Phy. Rev. A 77, 014502 (2008)ADSCrossRefGoogle Scholar
  14. 14.
    S. Nayek, A. Ghoshal, Eur. Phys. J. D 64, 257 (2011)ADSCrossRefGoogle Scholar
  15. 15.
    S. Nayek, A. Ghoshal, Phys. Scr. 85, 035301 (2012)ADSCrossRefGoogle Scholar
  16. 16.
    S. Nayek, A. Ghoshal, Phys. Scr. 88, 045301 (2013)ADSCrossRefGoogle Scholar
  17. 17.
    S. Nayek, A. Ghoshal, Phys. Plasmas 19, 113501 (2012)ADSCrossRefGoogle Scholar
  18. 18.
    S. Sen, P. Mandal, P.K. Mukherjee, Eur. Phys. J. D 62, 379 (2011)ADSCrossRefGoogle Scholar
  19. 19.
    S. Sen, P. Mandal, P.K. Mukherjee, Eur. Phys. J. D 66, 230 (2012)ADSCrossRefGoogle Scholar
  20. 20.
    J. Ma, Y. Cheng, Y.C. Wang, Y. Zhou, Phys. Plasmas 19, 063303 (2012)ADSCrossRefGoogle Scholar
  21. 21.
    A. Ghoshal, M.Z.M. Kamali, K. Ratnavelu, Phys. Plasmas 20, 013506 (2013)ADSCrossRefGoogle Scholar
  22. 22.
    A. Bhattacharya, M.Z.M. Kamali, A. Ghoshal, K. Ratnavelu, Phys. Plasmas 20, 083514 (2013)ADSCrossRefGoogle Scholar
  23. 23.
    P. Rej, A. Ghoshal, Phys. Plasmas 21, 093507 (2014)ADSCrossRefGoogle Scholar
  24. 24.
    S. Mukhopadhyay, C. Sinha, Phys. Rev. A 88, 033414 (2013)ADSCrossRefGoogle Scholar
  25. 25.
    S.-C. Na, Y.-D. Jung, Phys. Lett. A 372, 5605 (2008)ADSCrossRefGoogle Scholar
  26. 26.
    S.-C. Na, Y.-D. Jung, Phys. Scr. 78, 035502 (2008)ADSCrossRefGoogle Scholar
  27. 27.
    P.K. Shukla, B. Eliasson, Phys. Lett. A 372, 2897 (2008)ADSCrossRefGoogle Scholar
  28. 28.
    T. Ramazanov, K. Galiyev, K.N. Dzhumagulova, G. Ropke, R. Redmer, Contrib. Plasma Phys. 43, 39 (2003)ADSCrossRefGoogle Scholar
  29. 29.
    M. Marklund, P.K. Shukla, Rev. Mod. Phys. 78, 218 (2006)CrossRefGoogle Scholar
  30. 30.
    M. Amoretti et al., Nature 419, 456 (2002)ADSCrossRefGoogle Scholar
  31. 31.
    G. Gabrielse et al., Phys. Rev. Lett. 89, 213401 (2002)ADSCrossRefGoogle Scholar
  32. 32.
    Y. Enomoto et al., Phys. Rev. Lett. 105, 243401 (2010)ADSCrossRefGoogle Scholar
  33. 33.
    E.M. Bass, D.H.E. Dubin, Phys. Plasmas 16, 012101 (2009)ADSCrossRefGoogle Scholar
  34. 34.
    J. Mitroy, G. Ryzhikh, J. Phys. B 30, L371 (1997)ADSCrossRefGoogle Scholar
  35. 35.
    J. Mitroy, Phys. Rev. A 52, 2859 (1995)ADSCrossRefGoogle Scholar
  36. 36.
    J. Mitroy, A.T. Stelbovics, Phys. Rev. Lett. 72, 3495 (1994)ADSCrossRefGoogle Scholar
  37. 37.
    J. Mitroy, A.T. Stelbovics, J. Phys. B 27, L79 (1994)ADSCrossRefGoogle Scholar
  38. 38.
    K. Ratnavelu, J. Mitroy, A.T. Stelbovics, J. Phys. B 29, 2775 (1996)ADSCrossRefGoogle Scholar
  39. 39.
    A. Igarashi, N. Toshima, T. Shirai, J. Phys. B 27, L497 (1994)ADSCrossRefGoogle Scholar
  40. 40.
    R.J. Whitehead, J.F. McCann, I. Shimamura, Phys. Rev. A 64, 023401 (2001)ADSCrossRefGoogle Scholar
  41. 41.
    S. Tripathy, C. Sinha, N.C. Sil, Phys. Rev. A 42, 1785 (1990)ADSCrossRefGoogle Scholar
  42. 42.
    J.W. Humberston, M. Charlton, F.M. Jacobsen, B.I. Deutch, J. Phys. B 20, L25 (1987)ADSCrossRefGoogle Scholar
  43. 43.
    N. Yamanaka, Y. Kino, Nucl. Instrum. Methods Phys. Res. B 214, 40 (2004)ADSCrossRefGoogle Scholar
  44. 44.
    A.S. Kadyrov, C.M. Rawlins, A.T. Stelbovics, I. Bray, M. Charlton, Phys. Rev. Lett. 114, 183201 (2015)ADSCrossRefGoogle Scholar
  45. 45.
    A. Ghoshal, Y.K. Ho, J. Phys. B 43, 115007 (2010)ADSCrossRefGoogle Scholar

Copyright information

© EDP Sciences, SIF, Springer-Verlag GmbH Germany 2016

Authors and Affiliations

  • Kuru Ratnavelu
    • 1
  • Arijit Ghoshal
    • 1
    • 2
    • 3
  • Sujay Nayek
    • 3
  • Arka Bhattacharya
    • 3
  • Mohd Zahurin Mohamed Kamali
    • 4
  1. 1.Institute of Mathematical Sciences, Faculty of Science, University of MalayaKuala LumpurMalaysia
  2. 2.Department of MathematicsKazi Nazrul UniversityWest BengalIndia
  3. 3.Department of MathematicsBurdwan UniversityBurdwanIndia
  4. 4.Centre for Foundation Studies in Science, University of MalayaKuala LumpurMalaysia

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