Time-dependent and time-independent methods applied to multiphoton ionization of helium

J.S. Parker; D.H. Glass; L.R. Moore; E.S. Smyth; K.T. Taylor; P.G. Burke

doi:10.1088/0953-4075/33/7/101

Time-dependent and time-independent methods applied to multiphoton ionization of helium

J.S. Parker, D.H. Glass, L.R. Moore, E.S. Smyth, K.T. Taylor, P.G. Burke

Research output: Contribution to journal › Letter › peer-review

47 Citations (Scopus)

Abstract

A comparison is made between results from the R -matrix Floquet approach and the direct numerical integration of the full-dimensional time-dependent Schrödinger equation for the multiphoton ionization of helium. Good agreement is obtained away from resonances in the intensity range 5 × 1013to 4 × 1014W cm-2at a laser wavelength of 248.6 nm. This agreement confirms error estimates made independently of the comparison. We review and contrast the two approaches, and discuss details of the convergence tests by which error estimates are obtained.

Original language	English
Article number	L239
Pages (from-to)	1-10
Number of pages	10
Journal	Journal of Physixs B: Atomic, Molecular and Optical Physics
Volume	33
Issue number	7
DOIs	https://doi.org/10.1088/0953-4075/33/7/101
Publication status	Published (in print/issue) - 14 Apr 2000

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10.1088/0953-4075/33/7/101

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AU - Parker, J.S.

AU - Glass, D.H.

AU - Moore, L.R.

AU - Smyth, E.S.

AU - Taylor, K.T.

AU - Burke, P.G.

PY - 2000/4/14

Y1 - 2000/4/14

N2 - A comparison is made between results from the R -matrix Floquet approach and the direct numerical integration of the full-dimensional time-dependent Schrödinger equation for the multiphoton ionization of helium. Good agreement is obtained away from resonances in the intensity range 5 × 1013to 4 × 1014W cm-2at a laser wavelength of 248.6 nm. This agreement confirms error estimates made independently of the comparison. We review and contrast the two approaches, and discuss details of the convergence tests by which error estimates are obtained.

AB - A comparison is made between results from the R -matrix Floquet approach and the direct numerical integration of the full-dimensional time-dependent Schrödinger equation for the multiphoton ionization of helium. Good agreement is obtained away from resonances in the intensity range 5 × 1013to 4 × 1014W cm-2at a laser wavelength of 248.6 nm. This agreement confirms error estimates made independently of the comparison. We review and contrast the two approaches, and discuss details of the convergence tests by which error estimates are obtained.

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DO - 10.1088/0953-4075/33/7/101

M3 - Letter

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JO - Journal of Physixs B: Atomic, Molecular and Optical Physics

JF - Journal of Physixs B: Atomic, Molecular and Optical Physics

IS - 7

M1 - L239

ER -

Time-dependent and time-independent methods applied to multiphoton ionization of helium

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