Related Experiment Video
Updated: Dec 6, 2025
06:53
Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
Published on: July 27, 2018
9.0K
Attosecond electron-spin dynamics in Xe 4d photoionization
Shiyang Zhong1, Jimmy Vinbladh2, David Busto3
1Department of Physics, Lund University, P.O. Box 118, Lund, SE-221 00, Sweden. shiyang.zhong@fysik.lth.se.
Nature Communications
|October 8, 2020
Summary
Researchers explored xenon atom photoionization using attosecond interferometry. They identified two distinct ionization mechanisms with different decay times, revealing complex electron-spin dynamics in photo-induced phenomena.
Area of Science:
- Atomic Physics
- Quantum Mechanics
- Spectroscopy
Background:
- Photoionization of xenon atoms exhibits phenomena like giant resonance and complex Auger decay.
- Previous studies lacked real-time dynamics of these processes.
- Spin-orbit interaction influences intermediate Xe+ states.
Purpose of the Study:
- To investigate the real-time dynamics of 4d photoionization in xenon atoms.
- To differentiate and characterize interfering ionization mechanisms.
- To understand the interplay of electron and spin dynamics.
Main Methods:
- Attosecond interferometry combined with coincidence spectroscopy.
- Time-frequency analysis of ionization transitions.
- Studying xenon atoms in the 70-100 eV energy range.
Main Results:
- Identified two interfering ionization mechanisms: a fast-decaying giant dipole resonance (<50 attoseconds) and a slow-decaying spin-flip resonance (hundreds of attoseconds).
- Observed distinct decay times for different resonance pathways.
- Provided insights into the temporal evolution of electron-electron and electron-spin interactions.
Conclusions:
- The study elucidates the complex temporal dynamics of xenon photoionization.
- Attosecond interferometry reveals distinct timescales for different ionization pathways.
- Results advance the understanding of electron-spin dynamics in photo-induced atomic processes.
More Related Videos
Related Concept Videos
01:20Atomic Emission Spectroscopy: Overview
3.2K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
3.2K
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
504
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
504
01:23Atomic Spectroscopy: Absorption, Emission, and Fluorescence
2.2K
Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
2.2K
01:22Atomic Emission Spectroscopy: Instrumentation
1.0K
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
1.0K
01:27π Electron Effects on Chemical Shift: Overview
1.4K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.4K
01:16UV–Vis Spectroscopy: Molecular Electronic Transitions
2.4K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
2.4K