VUV and Soft X-Ray Photoionization

Becker, Uwe; Shirley, David

doi:10.1007/978-1-4613-0315-2

Cited by 162 publications

(4 citation statements)

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“…The calculated cross sections and asymmetry parameters β 2 for the first-step ionization from the ground state of the Xe atom are in good agreement with published experimental data [40][41][42] as well as with theoretical calculations [43] (see table 1 and discussion in the next section).…”

Section: Calculationssupporting

confidence: 86%

Photoelectron angular distributions for the two-photon sequential double ionization of xenon by ultrashort extreme ultraviolet free electron laser pulses

Mondal¹,

Ma²,

Motomura³

et al. 2013

J. Phys. B: At. Mol. Opt. Phys.

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Xenon atoms are double-ionized by sequential two-photon absorption by ultrashort extreme ultraviolet free-electron laser pulses with a photon energy of 23.0 and 24.3 eV, produced by the SPring-8 Compact SASE Source test accelerator. The angular distributions of photoelectrons generated by two-photon double ionization are obtained using velocity map imaging. The results are reproduced reasonably well by the present theoretical calculations within the multi-configurational Dirac–Fock approach.

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Section: Calculationssupporting

confidence: 86%

Photoelectron angular distributions for the two-photon sequential double ionization of xenon by ultrashort extreme ultraviolet free electron laser pulses

Mondal¹,

Ma²,

Motomura³

et al. 2013

J. Phys. B: At. Mol. Opt. Phys.

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“…The first step of the process, the atomic single-photon ionization (22), has been studied extensively over a long time (see references in [35]). These experiments were performed with synchrotron radiation from storage rings, thus due to the low intensity of the photon flux the probability of the secondstep ionization (23) was negligible.…”

Section: Sequential 2pdi Of Neonmentioning

confidence: 99%

Non-dipole effects in the angular distribution of photoelectrons in sequential two-photon atomic double ionization

Grum-Grzhimailo¹,

Грызлова²,

Meyer³

2012

J. Phys. B: At. Mol. Opt. Phys.

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Abstract. Motivated by the recent achievements of experiments using X-ray free electron lasers, we develop a theory for the angular distributions of photoelectrons in sequential two-photon double ionization (2PDI) of atoms beyond the dipole approximation. Expressions for the angular distributions are obtained taking into account the full multipole expansion of radiation in electric and magnetic moments. The formalism is further specified for the first-order corrections to the dipole approximation. As illustrative example, the sequential 2PDI of the 2p shell in atomic neon is studied. The numerical calculations predict distinct non-dipole effects observable in experiments at present X-ray Free Electron Lasers.

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“…On top of this, there is another subtle effect that becomes an additional correction to P , even when spin-degenerate initial states are considered, and which has not often been taken into account recently, despite being known since almost four decades [27,[33][34][35][68][69][70]: the fact that photoemission can be described as a spin-dependent "half-scattering" process. When studying the process of electron elastic scattering by a central field, in order to account for spin-orbit (SO) coupling one needs to use the relativistic Dirac equation.…”

Section: Spin Polarization In Photoemission From Spin-degenerate Statesmentioning

confidence: 99%

Determination of the time scale of photoemission from the measurement of spin polarization

Fanciulli

Dil

2018

SciPost Phys.

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The Eisenbud-Wigner-Smith (EWS) time delay of photoemission depends on the phase term of the matrix element describing the transition. Because of an interference process between partial channels, the photoelectrons acquire a spin polarization which is also related to the phase term. The analytical model for estimating the time delay by measuring the spin polarization is reviewed in this manuscript. In particular, the distinction between scattering EWS and interfering EWS time delay will be introduced, providing an insight in the chronoscopy of photoemission. The method is applied to the recent experimental data for Cu(111) presented in M. Fanciulli et al., PRL 118, 067402 (2017), allowing to give better upper and lower bounds and estimates for the EWS time delays.

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VUV and Soft X-Ray Photoionization

Abstract: Llbrarv of Congress Cataloging-In-Publication Data VUV and soft X-ray photolonizatlon I edIted by U.e Becker and DavId A. ShIrley. p. cn. --(Physics of atoms and molecules) Includes biblIographIcal references and Index.

Cited by 162 publications

References 0 publications

Photoelectron angular distributions for the two-photon sequential double ionization of xenon by ultrashort extreme ultraviolet free electron laser pulses

Photoelectron angular distributions for the two-photon sequential double ionization of xenon by ultrashort extreme ultraviolet free electron laser pulses

Non-dipole effects in the angular distribution of photoelectrons in sequential two-photon atomic double ionization

Determination of the time scale of photoemission from the measurement of spin polarization

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