Phys. Rev. Lett. 88, 173002 (2002) [4 pages]Core-Excited Resonance Enhancement in the Two-Photon Complete Fragmentation of HeliumReceived 9 January 2002; published 11 April 2002 A time-dependent close-coupling method is used to calculate, for the first time, fully differential cross sections for the complete fragmentation of helium by two photons. Surprising differences in the magnitude of the total-integral cross sections are found in comparisons with other calculations. These differences are found to be due to a core-excited resonance enhancement of the two-photon process for both single and double ionization. These calculations provide theoretical support for ground-breaking measurements expected to be obtained from free-electron laser experiments in the near future. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.88.173002
DOI:
10.1103/PhysRevLett.88.173002
PACS:
32.80.Rm
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.