Two-photon double ionization of helium in the region of photon energies 42-50 eV

Journal Article · Thu Mar 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.033411· OSTI ID:20982359

Ivanov, I A; Kheifets, A S ^[1]

---

1. Research School of Physical Sciences and Engineering, The Australian National University, Canberra ACT 0200 (Australia)

We report the total integrated cross section (TICS) of two-photon double ionization of helium in the photon energy range from 42 to 50 eV. Our computational procedure relies on a numerical solution of the time-dependent Schroedinger equation on a square-integrable basis and subsequent projection of this solution on a set of final field-free states describing correlation in the two-electron continuum. Our results suggest that the TICS grows monotonically as a function of photon energy in the region of 42-50 eV, possibly reaching a maximum in the vicinity of 50 eV. We also present fully resolved triple-differential cross sections for selected photon energies.

• OSTI ID: 20982359
• Journal Information: Physical Review. A, Vol. 75, Issue 3; Other Information: DOI: 10.1103/PhysRevA.75.033411; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
COMPUTER CALCULATIONS
CORRELATIONS
DIFFERENTIAL CROSS SECTIONS
ELECTRONS
EV RANGE 10-100
HELIUM
INTEGRAL CALCULUS
MULTI-PHOTON PROCESSES
NUMERICAL SOLUTION
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PHOTONS
SCHROEDINGER EQUATION
TIME DEPENDENCE
TITANIUM CARBIDES
TOTAL CROSS SECTIONS