English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Intermanifold similarities in partial photoionization cross sections of helium

MPS-Authors
/persons/resource/persons184929

Schneider,  T.
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

/persons/resource/persons30956

Rost,  J. M.
Division Prof. Dr. Joachim H. Ullrich, MPI for Nuclear Physics, Max Planck Society;
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Schneider, T., Liu, C. N., & Rost, J. M. (2002). Intermanifold similarities in partial photoionization cross sections of helium. Physical Review A, 65(4): 042715. Retrieved from http://ojps.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000089000007073002000001&idtype=cvips&gifs=yes.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002B-37CE-3
Abstract
Using the eigenchannel R-matrix method we calculate partial photoionization cross sections from the ground state of the helium atom for incident photon energies up to the N=9 manifold. The wide energy range covered by our calculations permits a thorough investigation of general patterns in the cross sections which were first discussed by Menzel and coworkers [Phys. Rev. A 54, 2080 (1996)]. The existence of these patterns can easily be understood in terms of propensity rules for autoionization. As the photon energy is increased the regular patterns are locally interrupted by perturber states until they fade out indicating the progressive breakdown of the propensity rules and the underlying approximate quantum numbers. We demonstrate that the destructive influence of isolated perturbers can be compensated with an energy-dependent quantum defect.