OSA's Digital Library

Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 6 — Mar. 15, 2007
  • pp: 585–587

Laser-assisted positron-impact ionization of atomic hydrogen

Juan Pan, Shu-Min Li, and Jamal Berakdar  »View Author Affiliations

Optics Letters, Vol. 32, Issue 6, pp. 585-587 (2007)

View Full Text Article

Enhanced HTML    Acrobat PDF (257 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We study the ionization of atomic hydrogen by a fast positron in the presence of an external linearly polarized laser field. We concentrate on the limit of a small momentum transfer and describe the fast positron’s continuum states by Volkov wave functions. The ejected electron is described by a Coulomb–Volkov wave function. We are limited to small laser intensities such that the dressed state of the target is treatable within the time-dependent perturbation theory, even though the laser intensity is still quite high by laboratory standards. Numerical results for the triply differential cross sections and their dependencies on laser-field parameters are discussed and compared with the results of laser-assisted ionization by electron impact.

© 2007 Optical Society of America

OCIS Codes
(020.2070) Atomic and molecular physics : Effects of collisions
(020.4180) Atomic and molecular physics : Multiphoton processes
(260.3230) Physical optics : Ionization
(350.4990) Other areas of optics : Particles

ToC Category:
Atomic and Molecular Physics

Original Manuscript: September 19, 2006
Revised Manuscript: November 29, 2006
Manuscript Accepted: November 29, 2006
Published: February 15, 2007

Juan Pan, Shu-Min Li, and Jamal Berakdar, "Laser-assisted positron-impact ionization of atomic hydrogen," Opt. Lett. 32, 585-587 (2007)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. J. Ullrich, R. Moshammer, A. Dorn, R. Dörner, L. Ph. H. Schmidt, and H. Schmidt-Böcking, Rep. Prog. Phys. 66, 1463 (2003). [CrossRef]
  2. C. Höhr, A. Dorn, B. Najjari, D. Fischer, C. D. Schröter, and J. Ullrich, Phys. Rev. Lett. 94, 153201 (2005). [CrossRef] [PubMed]
  3. C. J. Joachain, P. Franken, A. Maquet, P. Martin, and V. Veniad, Phys. Rev. Lett. 61, 165 (1988). [CrossRef] [PubMed]
  4. P. Martin, V. Veniard, A. Maquet, P. Franchen, and C. J. Joachain, Phys. Rev. A 39, 6178 (1989). [CrossRef] [PubMed]
  5. D. Khail, A. Maquet, R. Taïeb, C. J. Joachain, and A. Makhoute, Phys. Rev. A 56, 4918 (1997). [CrossRef]
  6. A. Makhoute, D. Khail, A. Maquet, C. J. Joachain, and R. Taïeb, J. Phys. B 32, 3255 (1999). [CrossRef]
  7. S.-M. Li, J. Chen, and Z.-F. Zhou, J. Phys. B 35, 557 (2002). [CrossRef]
  8. S.-M. Li, J. Berakdar, S.-T. Zhang, and J. Chen, J. Phys. B 38, 1291 (2005). [CrossRef]
  9. A. Chattopadhyay and C. Sinha, Phys. Rev. A 72, 053406 (2005). [CrossRef]
  10. C. Arcidiacono, Á. Kövér, and G. Laricchia, Phys. Rev. Lett. 95, 223202 (2005). [CrossRef] [PubMed]
  11. Á. Kövér and G. Laricchia, Phys. Rev. Lett. 80, 5309 (1998). [CrossRef]
  12. J. Berakdar, Phys. Rev. Lett. 81, 1393 (1998). [CrossRef]
  13. J. Berakdar, Nucl. Instrum. Methods Phys. Res. B 171, 204 (2000). [CrossRef]
  14. J. Fiol, V. D. Rodríguez, and R. O. Barrachina, J. Phys. B 34, 933 (2001). [CrossRef]
  15. J. Fiol and R. E. Olson, J. Phys. B 35, 1173 (2002).
  16. L. Sarkadi, Phys. Rev. A 68, 032706 (2003). [CrossRef]
  17. D. Ghosh and C. Sinha, J. Phys. B 38, 61 (2005). [CrossRef]
  18. J. Berakdar and H. Klar, J. Phys. B 26, 3891 (1993). [CrossRef]
  19. D. M. Volkov, Z. Phys. 94, 250 (1935). [CrossRef]
  20. V. B. Berestetskii, E. M. Lifshitz, and L. P. Pitzevskii, Course of Theoretical Physics. Vol. 4: Quantum Electrodynamics, 2nd ed. (Pergamon, 1982).
  21. P. Cavaliere, G. Ferrante, and C. Leone, J. Phys. B 13, 4495 (1980). [CrossRef]
  22. A. S. Kornev and B. A. Zon, J. Phys. B 35, 2451 (2002). [CrossRef]
  23. M. Abramowitz and I. Stegun, A Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables (U.S. Department of Commerce, 1972).
  24. S.-M. Li, J. Chen, and Z.-F. Zhou, Eur. Phys. J. D 19, 157 (2002). [CrossRef]
  25. H. Ehrhardt, K. Jung, G. Knoth, and P. Schlemmer, Z. Phys. D 13, 3 (1986). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4

Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited