Nuclear recoil cross sections from time-dependent studies of two-photon double ionization of helium

Journal Article · Mon Feb 15 04:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.023410· OSTI ID:21408263

Horner, D A; Rescigno, T N ^[1]; McCurdy, C W ^[2]

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1. Los Alamos National Laboratory, Theoretical Division, Los Alamos, New Mexico 87545 (United States)
2. Lawrence Berkeley National Laboratory, Chemical Sciences and Ultrafast X-ray Science Laboratory, Berkeley, California 94720 (United States)

We describe how the nuclear recoil cross sections produced by two-photon double ionization of helium can reveal aspects of the underlying triple-differential cross sections (TDCSs) used in their computation--even though the recoil of the He{sup 2+} nucleus reflects an integration over all electron ejection directions and energy sharings. Accurate TDCSs, extracted from nonperturbative solutions of the time-dependent Schroedinger equation, are used here in computations of the nuclear recoil cross section at energies a few electron volts below the threshold for sequential double ionization. In this range of photon energies, the nuclear recoil patterns prefigure some important aspects of the sequential mechanism that dominates at higher energies.

• OSTI ID: 21408263
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 2 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BOSONS
CHARGED PARTICLES
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DIFFERENTIAL EQUATIONS
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
EQUATIONS
FERMIONS
FLUIDS
GASES
HELIUM
HELIUM IONS
IONIZATION
IONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL SOLUTIONS
NONMETALS
NUCLEI
PARTIAL DIFFERENTIAL EQUATIONS
PHOTONS
RARE GASES
SCHROEDINGER EQUATION
TIME DEPENDENCE
WAVE EQUATIONS