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We report experimental results on three-dimensional momentum imaging measurements of anions generated via dissociative electron attachment to gaseous formamide. From the momentum images, we analyze the angular and kinetic energy…

Employing a short-range two-channel description we derive an analytic model of atoms in isotropic and anisotropic harmonic traps at a Feshbach resonance. On this basis we obtain a new parameterization of the energy-dependent scattering…

量子气体 · 物理学 2011-03-09 Philipp-Immanuel Schneider , Yulian V. Vanne , Alejandro Saenz

The method of the envelope Hamiltonian [K. Toyota, U. Saalmann, and J. M. Rost, New J. Phys. {\bf 17}, 073005~(2015)] is applied to further study a detachment dynamics of a model negative ion in one-dimension in high-frequency regime. This…

原子物理 · 物理学 2016-10-19 Koudai Toyota

We report a limit on the fractional temporal variation of the proton-to-electron mass ratio as, obtained by comparing the frequency of a rovibrational transition in SF6 with the fundamental hyperfine transition in Cs. The SF6 transition was…

We present a kinematically complete study of dissociative electron attachment (DEA) in linear OCS molecules, focusing on how electrons resonantly attach and trigger dissociation. Near the Franck-Condon regime, DEA is dominated by molecular…

原子与分子团簇 · 物理学 2025-05-02 Narayan Kundu , Meenakshi Rana , Aryya Ghosh , Dhananjay Nandi

We investigate the resonant process of nuclear excitation by electron capture, in which a continuum electron is captured into a bound state of an ion with the simultaneous excitation of the nucleus. In order to derive the cross section a…

原子物理 · 物理学 2008-11-26 Adriana Pálffy , Zoltán Harman , Werner Scheid

Complete dissociation dynamics of low-energy electron attachment to carbon disulfide have been studied using the velocity slice imaging (VSI) technique. The ion yields of S- and CS- fragment ions as the function of incident electron energy…

原子与分子团簇 · 物理学 2022-09-28 Anirban Paul , Dhananjay Nandi

We have performed radio-frequency dissociation spectroscopy of weakly bound ^6Li_2 Feshbach molecules using low-density samples of about 30 molecules in an optical dipole trap. Combined with a high magnetic field stability this allows us to…

量子气体 · 物理学 2013-07-16 G. Zürn , T. Lompe , A. N. Wenz , S. Jochim , P. S. Julienne , J. M. Hutson

The accuracy of the noninteracting electron approximation is examined for a model of vibrationally coupled electron transport in single molecule junction. In the absence of electronic-vibrational coupling, steady state transport in this…

介观与纳米尺度物理 · 物理学 2017-01-04 Haobin Wang , Michael Thoss

This article presents an overview of current understanding of the interaction of low-energy positrons with molecules with emphasis on resonances, positron attachment and annihilation. Annihilation rates measured as a function of positron…

原子物理 · 物理学 2010-09-22 G. F. Gribakin , J. A. Young , C. M. Surko

In this review lifetime measurements of ions with at most two electrons are summarized. Such highly ionized systems have been studied - until now - only in the Experimental Storage Ring of the GSI in Darmstadt. Emphasis is put on decays via…

核实验 · 物理学 2015-12-09 Thomas Faestermann

Weak decays in heavy nuclei with charge numbers Z=101-109 are studied within a microscopic formalism based on deformed self-consistent Skyrme Hartree-Fock mean-field calculations with pairing correlations. The half-lives of beta+ decay and…

核理论 · 物理学 2020-11-16 Pedro Sarriguren

A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the BCS-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density…

其他凝聚态物理 · 物理学 2007-05-23 Theja N. De Silva , Erich J. Mueller

A semiempirical theory for the excitation and subsequent relaxation of nonthermal electrons is described. The theory, which is applicable to ultrafast-laser excited metals, is based on the Boltzmann transport equation for the carrier…

材料科学 · 物理学 2023-07-12 D. M. Riffe , Richard B. Wilson

Molecular motion at metallic surfaces is affected by nonadiabatic effects and electron-phonon coupling. The ensuing energy dissipation and dynamical steering effects are not captured by classical molecular dynamics simulations, but can be…

材料科学 · 物理学 2021-12-02 Connor L. Box , Wojciech G. Stark , Reinhard J. Maurer

We present a comprehensive study of the adsorption behavior of iron phthalocyanine on the low-index crystal faces of silver. By combining measurements of the reciprocal space by means of photoelectron momentum mapping and low energy…

材料科学 · 物理学 2015-06-17 V. Feyer , M. Graus , P. Nigge , M. Wiessner , R. G. Acres , C. Wiemann , C. M. Schneider , A. Schöll , F. Reinert

In the present paper we report on the combined experimental and theoretical study of the Sr6-xEuxBP5O20 (x=0.01; 0.03; 0.05; 0.07; 0.09; 0.11; 0.13; 0.15) phosphors. Details of the samples preparation and spectroscopic measurements are…

材料科学 · 物理学 2014-03-11 Dejian Hou , C. -G. Ma , Hongbin Liang , M. G. Brik

We use a configuration-interaction approach and Fermi golden rule to investigate electron-phonon interaction in realistic multi-electron quantum dots. Lifetimes are computed in the low-density, highly correlated regime. We report numerical…

介观与纳米尺度物理 · 物理学 2009-11-11 A. Bertoni , M. Rontani , G. Goldoni , E. Molinari

We have searched for time modulation of the electron capture decay probability of $^{142}$Pm in an attempt to confirm a recent claim from a group at the Gesellschaft f\"{u}r Schwerionenforschung (GSI). We produced $^{142}$Pm via the…

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