Electron Correlations Observed through Intensity Interferometry

Schulz, Michael; Moshammer, R.; Schmitt, W.; Kollmus, H.; Feuerstein, B.; Mann, R.; Hagmann, S.; Ullrich, J.

doi:10.1103/physrevlett.84.863

Cited by 40 publications

(55 citation statements)

References 12 publications

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“…A subtle structure of correlated electron dynamics during the non-sequential multiple ionization process has been investigated in a series of recent experiments using a "reaction microscope". The latter allows to calculate the full momentum vectors of the recoil ions and electrons from time-of-flight and position measurements on the detectors [268].…”

Section: More Complex Systemsmentioning

confidence: 99%

Relativistic high-power laser–matter interactions

et al. 2006

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Section: More Complex Systemsmentioning

confidence: 99%

Relativistic high-power laser–matter interactions

et al. 2006

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“…Recently, electron correlations have been investigated by inspecting the so-called correlation function R (Schulz et al 2000a;Feuerstein et al 2001a;Gerchikov and Sheinermann 2001;Schulz et al 2001a;Gerchikov et al 2002). Here, the probability to find two electrons emitted in the same multiple ionisation event with a certain momentum difference is compared to the corresponding probability for two independent electrons emitted in two different collisions.…”

Section: Double Ionisation At Small and Large Perturbationsmentioning

confidence: 99%

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

et al. 2003

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Recoil-ion and electron momentum spectroscopy is a rapidly developing technique that allows one to measure the vector momenta of several ions and electrons resulting from atomic or molecular fragmentation. In a unique combination, large solid angles close to π Microccopes -the "bubble chambers of atomic physics" -mark the decisive step forward to investigate many-particle quantum-dynamics occurring when atomic and molecular systems or even surfaces and solids are exposed to time-dependent external electromagnetic fields.The present review concentrates on just these latest technical developments and on at least four new classes of fragmentation experiments that have emerged within about the last five years. First, multi-dimensional images in momentum space brought unprecedented information on the dynamics of single-photon induced fragmentation of fixed-in-space molecules and on their structure. Second, a break-through in the investigation of highintensity short-pulse laser induced fragmentation of atoms and molecules has been achieved by using Reaction Microccopes. Third, for electron and ion-impact, the investigation of twoelectron reactions has matured to a state such that first fully differential cross sections (FDCS) are reported. Forth, comprehensive sets of FDCS for single ionisation of atoms by ion-impact, the most basic atomic fragmentation reaction, brought new insight, a couple of surprises and unexpected challenges to theory at keV to GeV collision energies. In addition, a brief summary on the kinematics is provided at the beginning. Finally, the rich future potential of the method is shortly envisaged.2

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“…Since the projectile brings no electron into the collision, the cusp peak is formed due to the ECC mechanism only. Previous studies on the correlation function have shown that it is the final-state e-e interaction that primarily determines the energy and angular distribution of the DI electrons [15,16]. The final state of the process (1) investigated in the experiment and that of the double ECC studied in this work are similar: Two repelling electrons move in the attractive Coulomb field of a heavy charged particle in the same direction with small relative velocity.…”

Section: Introductionmentioning

confidence: 70%

“…More details can be explored by measuring the angular and energy distribution of the emitted electrons which has become available recently due to an adaptation of the coincidence electron detection technique in the field. The so-called correlation functions [15,16], the role of first-order and second-order processes in the ejection mechanism [17] and some characteristic structures in the electron distributions [13] have been the focus of the studies, while the threshold behavior of the DI process received less interest.…”

Section: Introductionmentioning

confidence: 99%

Two-electron cusp in the double ionization of helium

et al. 2010

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We analyze the double ionization of He under the impact of 100 keV He 2+ projectiles. The process is described within the framework of the impact parameter and frozen-correlation approximations where the one-electron events are treated by the continuum distorted wave method. Correlation between the emitted electrons, which plays an important role in forming the shape of the differential distribution of the electron emission, is described by the Coulomb density of states approximation (CDS). Special attention is paid to the region of the two-electron cusp that has been observed in a recent experiment for 100 keV He 0 + He collisions [L. Sarkadi and A. Orbán, Phys. Rev. Lett. 100, 133201 (2008)]. In the cusp region the correlated motion of the two electrons is influenced dominantly by the outgoing projectile, that is, the correlation function of the CDS treatment is expected to depend on the electron momenta measured relative to the projectile rather than to the target nucleus. A qualitative agreement with the experiment is achieved with a CDS model based on the use of such a projectile-centered correlation function that applies effective charges as given in the dynamically screened three-Coulomb wave function.

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Electron Correlations Observed through Intensity Interferometry

Cited by 40 publications

References 12 publications

Relativistic high-power laser–matter interactions

Relativistic high-power laser–matter interactions

Recoil-ion and electron momentum spectroscopy: reaction-microscopes

Two-electron cusp in the double ionization of helium

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