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A double-folding method is used to calculate the nuclear and Coulomb interaction between two deformed nuclei with arbitrary orientations. A simplified Skryme-type interaction is adopted. The contributions of nuclear interaction and Coulomb…

核理论 · 物理学 2009-11-11 Qingfeng Li , Wei Zuo , Wenfei Li , Nan Wang , Enguang Zhao , Junqing Li , W. Scheid

We study the formation of C$_{18}$H and C$_{18}$H$_2$ by irradiating a cyclo[$18$]carbon molecule with atomic and molecular hydrogen at impact energy, $E$, in the range of 0.5-25 eV. We utilize the density-functional tight-binding method to…

Atoms exposed to high-frequency strong laser fields experience the ionization suppression due to the deformation of Kramers-Henneberger (KH) wave functions, which has not been confirmed yet in experiment. We propose a bichromatic pump-probe…

原子物理 · 物理学 2019-07-09 Pei-Lun He , Zhao-Han Zhang , Feng He

Multiple ionisation and electron capture are found to be vital mechanisms for K and L x-ray emissions along with the direct coulomb ionisation in heavy ion-atom collisions. Naturally, these two mechanisms may also be significant for M x-ray…

原子物理 · 物理学 2024-07-04 Soumya Chatterjee , Sumana Ghosh , D. Mitra

It is commonly believed that it is unfavourable for adsorbed H atoms on carbonaceous surfaces to form H$_2$ without the help of incident H atoms. Using ring-polymer instanton theory to describe multidimensional tunnelling effects, combined…

化学物理 · 物理学 2022-04-05 Erxun Han , Wei Fang , Michail Stamatakis , Jeremy O. Richardson , Ji Chen

Starting from the beginning of their research in the early 2000's, the ultracold plasmas were considered as a promising tool to achieve considerable values of the Coulomb coupling parameter for electrons. Unfortunately, this was found to be…

等离子体物理 · 物理学 2023-12-29 Yurii V. Dumin , Anastasiia T. Lukashenko

The crystallization of electrons in quasi low-dimensional solids is studied in a model which retains the full three-dimensional nature of the Coulomb interactions. We show that restricting the electron motion to layers (or chains) gives…

强关联电子 · 物理学 2009-11-11 G. Rastelli , P. Quemerais , S. Fratini

The interaction of a helium atom with intense short 800 nm laser pulse is studied theoretically beyond the single-active-electron approximation. For this purpose, the time-dependent Schr\"odinger equation for the two-electron wave packet…

原子与分子团簇 · 物理学 2017-03-08 Anton N. Artemyev , Lorenz S. Cederbaum , Philipp V. Demekhin

The impact of the strongly attractive electromagnetic field of heavy nuclei on electrons in quasi-elastic (e,e') scattering is often accounted for by the effective momentum approximation. This method is a plane wave Born approximation which…

核理论 · 物理学 2011-11-09 Andreas Aste , Dirk Trautmann

A strong laser field and the Coulomb field of a nucleus can produce e^{+}e^{-} pairs. It is shown for the first time that there is a large probability that electrons and positrons created in this process collide after one or several…

原子物理 · 物理学 2008-11-26 M. Yu. Kuchiev

We perform a systematic study of the fragmentation path of excited nuclear matter in central heavy ion collisions at the intermediate energy of $0.4 AGeV$. The theoretical calculations are based on a Relativistic Boltzmann-Uehling-Uhlenbeck…

核理论 · 物理学 2009-11-11 E. Santini , T. Gaitanos , M. Colonna , M. Di Toro

We predict that ultralong-range Rydberg bi-molecules form in collisions between polar molecules in cold and ultracold settings. The collision of $\Lambda$-doublet nitric oxide (NO) with long-lived Rydberg NO($nf$, $ng$) molecules forms…

原子物理 · 物理学 2021-02-03 Rosario Gonzalez-Ferez , Janine Shertzer , H. R. Sadeghpour

When a chemical bond is broken, the molecular structure undergoes a transformation. An ideal experiment should probe the change in the electronic and nuclear structure simultaneously. Here, we present a method for the simultaneous…

原子物理 · 物理学 2024-10-11 Saurabh Mhatre , Zack Dube , André Staudte , Stefanie Gräfe , Matthias Kübel

The formation of hypernuclei in hadron-induced reactions and in heavy-ion collisions within a combination of a covariant transport model and a statistical fragmentation approach is investigated. We study the applicability and limitations of…

核理论 · 物理学 2015-05-13 T. Gaitanos , H. Lenske , U. Mosel

We study mutual ionization in collisions between atomic hydrogen and helium at impact velocities near the electronic threshold for this process (determined by the condition that kinetic energy of an equivelocity free electron is…

原子物理 · 物理学 2015-06-17 S. F. Zhang , X. L. Zhu , A. B. Voitkiv , W. T. Feng , D. L. Guo , Y. Gao , R. T. Zhang , E. L Wang , X. Ma

The differential cross section of double bremsstrahlung from high-energy electron in the electric field of heavy atoms is derived. The results are obtained with the exact account of the atomic field by means of the quasiclassical…

高能物理 - 唯象学 · 物理学 2015-06-17 P. A. Krachkov , R. N. Lee , A. I. Milstein

Experimental studies of meson production through two-photon fusion in inelastic electron-nucleus scattering is now under way. A high-energy photon radiated by the incident electron is fused with a soft photon radiated by the nucleus. The…

核理论 · 物理学 2013-05-29 Göran Fäldt

We present theoretical studies of high-order harmonic generation (HHG) driven by plasmonic fields in two-electron atomic systems. Comparing the two-active electron and single-active electron approximation models of the negative hydrogen ion…

原子物理 · 物理学 2016-11-03 A. Chacón , M. F. Ciappina , M. Lewenstein

The differential cross section of high-energy electroproduction in the electric field of heavy atoms is derived. The result is obtained with the exact account of the atomic field by means of the quasiclassical approximation to the wave…

高能物理 - 唯象学 · 物理学 2016-07-06 P. A. Krachkov , A. I. Milstein

We have detected oscillations of the charge around a potential hill (antidot) in a two-dimensional electron gas as a function of a large magnetic field B. The field confines electrons around the antidot in closed orbits, the areas of which…

介观与纳米尺度物理 · 物理学 2009-10-31 M. Kataoka , C. J. B. Ford , G. Faini , D. Mailly , M. Y. Simmons , D. R. Mace , C. -T. Liang , D. A. Ritchie