Hyperfine Interactions

, 193:321 | Cite as

Efficient Rydberg positronium laser excitation for antihydrogen production in a magnetic field

Article

Abstract

Antihydrogen production by charge exchange reaction between positronium (Ps) and antiprotons requires an efficient excitation of Ps atoms up to high-n levels (Rydberg levels). We propose a two-step laser light excitation, the first from ground to n = 3 and the second from this level to a Rydberg level n > 15. In this study it is assumed that a Ps cloud is produced by positrons hitting a target converter located in a Penning-Malmberg trap within a uniform ~ 1 T magnetic field. We model the optical transition structure by taking into account Doppler and motional Stark effects. The predicted efficiency for population deposition in high n states is of ~30%.

Keywords

Rydberg positronium laser excitation Antihydrogen production Magnetic fields 

References

  1. 1.
    Hughes, R.J.: Nucl. Phys. A 558, 605 (1993)CrossRefADSGoogle Scholar
  2. 2.
    Peters, A., Chung, K.Y., Chu, S.: Nature 400, 849 (1999)CrossRefADSGoogle Scholar
  3. 3.
    Nieto, M., Goldman, T.: Phys. Rep. 205, 221 (1992)CrossRefADSGoogle Scholar
  4. 4.
    Kellerbauer, A., et al.: Nucl. Instrum. Methods B 266, 351 (2008)CrossRefADSGoogle Scholar
  5. 5.
    Oberthaler, M., et al.: Phys. Rev. A 54, 3165 (1996)CrossRefADSGoogle Scholar
  6. 6.
    Hessels, E.A., Homan, D.M., Cavagnero, M.J.: Phys. Rev. A 57, 1668 (1998)CrossRefADSGoogle Scholar
  7. 7.
    Bonomi, G.: In: LEAP 2008 - International Conference on Low Energy Antiproton Physics, 16–19 Sept 2008, Vienna, Austria (2008)Google Scholar
  8. 8.
    Ziock, K.P., et al.: Phys. Rev. Lett. 64, 2366 (1990)CrossRefADSGoogle Scholar
  9. 9.
    Gidley, D.W., Peng, H.-G., Vallery, R.S.: Annu. Rev. Mater. Res. 36, 49 (2006)CrossRefGoogle Scholar
  10. 10.
    Haidar, S., Usami, T., Ito, H.: Appl. Opt. 41, 5656 (2002)CrossRefADSGoogle Scholar
  11. 11.
    Boyd, R.W.: Nonlinear Optics, 2nd edn. Academic Press (2003)Google Scholar
  12. 12.
    Castelli, F., et al.: Phys. Rev. A 78, 052512 (2008)CrossRefADSGoogle Scholar
  13. 13.
    Halpern, O.: Phys. Rev. 94, 904 (1954)MATHCrossRefADSGoogle Scholar
  14. 14.
    Feinberg, G., et al.: Phys. Rev. A 41, 3478 (1990)CrossRefADSGoogle Scholar
  15. 15.
    Rich, A.: Rev. Mod. Phys. 53, 127 (1981)CrossRefADSGoogle Scholar
  16. 16.
    Curry, S.M.: Phys. Rev. A 7, 447 (1973)CrossRefADSGoogle Scholar
  17. 17.
    Dermer, C.D., Weisheit, J.C.: Phys. Rev. A 40, 5526 (1989)CrossRefADSGoogle Scholar
  18. 18.
    Gallagher, T.F.: Rep. Prog. Phys. 51, 143 (1988)CrossRefADSGoogle Scholar
  19. 19.
    Gallagher, T.F.: Rydberg Atoms. Cambridge University Press, Cambridge (2005)Google Scholar
  20. 20.
    Meystre, P., Sargent, M.: Elements of Quantum Optics, 3rd edn. Springer, New York (2005)Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  1. 1.Istituto Nazionale di Fisica NucleareMilanItaly

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