Photon Momentum Transfer in Single-Photon Double Ionization of Helium

Chen, Si-Ge; Jiang, Wei-Chao; Grundmann, Sven; Trinter, Florian; Schöffler, M. S.; Jahnke, T.; Dørner, R.; Liang, Hao; Wang, Mu-Xue; Peng, Liang-You; Gong, Qihuang

doi:10.1103/physrevlett.124.043201

Cited by 23 publications

(19 citation statements)

References 41 publications

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“…The fundamental process of direct double photoionisation (DPI), i.e, the removal of two electrons by a single photon, is extremely sensitive to the details of the electron-electron interaction. Therefore, it has been a central topic of atomic physics already for decades (see, e.g., [41][42][43][44][45][46][47] and references therein). Moreover, double core-hole production in atoms and molecules is currently an active topic particularly at VUV and X-ray free-electron lasers [48][49][50][51][52][53][54][55][56][57].…”

Section: Multiple Detachment Via Double Core-hole Creationmentioning

confidence: 99%

Multiple photodetachment of atomic anions via single and double core-hole creation

Schippers,

Perry-Sassmannshausen,

Buhr

et al. 2020

Preprint

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We review the recent experimental and theoretical progress in Kshell detachment studies of atomic anions. On the experimental side, this field has largely benefitted from technical advances at 3rd generation synchrotron radiation sources. For multiple detachment of C − , O − , and F − ions, recent results were obtained at the photon-ion merged-beams setup PIPE which is a permanent end station at beamline P04 of the PETRA III synchrotron light source in Hamburg. In addition to a much increased photon flux as compared to what was available previously, the PIPE setup has an extraordinary detection sensitivity for heavy charged reaction products that allows one to study detachment processes with extremely low cross sections in the kilobarn range, e.g., for processes involving the simultaneous creation of two core-holes by a single photon. The experimental findings pose new challenges for state-of-the-art atomic theory and require calculations combining photoexcitation (ionization) with decay cascade processes that follow after initial core-hole production.

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Section: Multiple Detachment Via Double Core-hole Creationmentioning

confidence: 99%

Multiple photodetachment of atomic anions via single and double core-hole creation

Schippers,

Perry-Sassmannshausen,

Buhr

et al. 2020

Preprint

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“…While the works mentioned above were carried out within the dipole approximation, strong-field physics beyond that approximation has attracted increasingly more interest in recent years [16]. It has been shown both experimentally and theoretically that nondipole corrections to the Hamiltonian can induce a photon-momentum transfer to the photoelectron [17][18][19][20][21][22][23]. Besides, when atoms are exposed to the extreme ultraviolet (XUV) pulse of high intensity, the nondipole corrections can alter the dynamic interference [24].…”

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confidence: 99%

Laser-induced electron Fresnel diffraction by XUV pulses at extreme intensity

Geng,

Liang,

Krajewska

et al. 2022

Preprint

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“…Remarkably, nondipole effects can be enhanced along two rather different routes-either by reducing the laser wavelength such that it approaches the atomic scale thereby probing the inhomogeneity of the electromagnetic field. This gives rise to a photoelectron angular distribution deviating from the dipole shape [2][3][4][5][6][7]. Alternatively, nondipole effects can also be enhanced by increasing the laser wavelength and/or increasing the intensity so that the motion of the liberated electron is strongly influenced by the magnetic field and radiation pressure of the laser field, resulting in linear momentum transfer along the propagation direction [8][9][10][11][12][13][14][15][16][17][18].…”

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confidence: 99%