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Title: Triple Differential Cross sections and Nuclear Recoil in Two-Photon Double Ionization of Helium

Journal Article · · Physical Review A

Triple differential cross sections (TDCS) for two-photon double ionization of helium are calculated using the method of exterior complex scaling both above and below the threshold for sequential ionization (54.4 eV). It is found that sequential ionization produces characteristic behavior in the TDCS that identifies that process when it is in competition with nonsequential ionization. Moreover we see the signature in the TDCS and nuclear recoil cross sections of"virtual sequential ionization" below the threshold for the sequential process.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
Chemical Sciences Division
DOE Contract Number:
DE-AC02-05CH11231
OSTI ID:
944429
Report Number(s):
LBNL-1262E; PLRAAN; TRN: US0900581
Journal Information:
Physical Review A, Vol. 78; Related Information: Journal Publication Date: October, 2008; ISSN 1050-2947
Country of Publication:
United States
Language:
English