Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Electron Behavior01:09

Electron Behavior

Electrons are negatively charged subatomic particles attracted to and orbit around the positively-charged nucleus of an atom. They reside in spaces associated with energy levels called shells and are further organized into subshells and orbitals within each shell.
Electrons Orbit the Nucleus
Electrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus have less energy,...
Electron Behavior00:54

Electron Behavior

Electrons are negatively charged subatomic particles that are attracted to an orbit around the positively-charged nucleus of an atom. They reside in locations that are associated with energy levels called shells and are further organized into sub-shells and orbitals within each shell.Electrons Orbit the NucleusElectrons are found in specific locations outside of the nucleus. The shell in which an electron resides indicates the general energy level of the electron: those closer to the nucleus...
Scanning Electron Microscopy01:07

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
Accelerated...
Thomson's e/m Experiment01:19

Thomson's e/m Experiment

In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam.
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...
π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

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, resulting in...
Atomic Spectroscopy: Absorption, Emission, and Fluorescence01:23

Atomic Spectroscopy: Absorption, Emission, and Fluorescence

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...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Coupled Femtoexcitons, Free Carriers, and Light.

Nano letters·2025
Same author

Direct coupling of light to valley current.

Nature communications·2024
Same author

Ultrafast Optically Induced Ferromagnetic State in an Elemental Antiferromagnet.

Physical review letters·2021
Same author

Extending Solid-State Calculations to Ultra-Long-Range Length Scales.

Physical review letters·2021
Same author

Element Specificity of Transient Extreme Ultraviolet Magnetic Dichroism.

Physical review letters·2020
Same author

Optical inter-site spin transfer probed by energy and spin-resolved transient absorption spectroscopy.

Nature communications·2020

Related Experiment Video

Updated: Jul 4, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

Interatomic contributions to high-energy electron-molecule scattering.

P D McCaffrey1, J K Dewhurst, D W H Rankin

  • 1School of Chemistry, The University of Edinburgh, Edinburgh EH9 3JJ, United Kingdom.

The Journal of Chemical Physics
|June 3, 2008
PubMed
Summary
This summary is machine-generated.

This study introduces a new formula for electron scattering cross sections, improving accuracy for molecular structures. The method enhances data fitting and is easily integrated into existing electron diffraction software.

More Related Videos

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Related Experiment Videos

Last Updated: Jul 4, 2026

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−
06:53

Photoelectron Imaging of Anions Illustrated by 310 Nm Detachment of F−

Published on: July 27, 2018

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene
08:44

Measurements of Long-range Electronic Correlations During Femtosecond Diffraction Experiments Performed on Nanocrystals of Buckminsterfullerene

Published on: August 22, 2017

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
08:55

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses

Published on: June 7, 2018

Area of Science:

  • Atomic and Molecular Physics
  • Scattering Theory
  • Computational Chemistry

Background:

  • Electron scattering cross sections are crucial for determining molecular structure.
  • Accurate theoretical models are needed to interpret experimental data.
  • Existing models often require complex calculations for multi-atom interactions.

Purpose of the Study:

  • To derive an approximate formula for three-atom terms in electron scattering cross sections.
  • To develop a computationally efficient method for analyzing molecular scattering data.
  • To improve the accuracy of structural determination in gas-phase electron diffraction.

Main Methods:

  • Utilized the independent atom scattering model.
  • Derived an approximate formula incorporating atomic scattering factors and wavefunctions.
  • Performed numerical rotational and vibrational averaging.
  • Compared results with multiple scattering theories and experimental data.

Main Results:

  • The derived formula accurately approximates three-atom scattering terms.
  • Results show consistency with previous theoretical calculations for F(3), F(4), and SF(6).
  • Inclusion of the three-atom term significantly improved least squares fitting for TeF(6) experimental data.

Conclusions:

  • The new formula provides a valuable tool for electron diffraction analysis.
  • The algorithm is computationally efficient and readily implementable in existing codes.
  • This approach enhances the precision of molecular structure determination from scattering experiments.