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

Unsymmetric Loading of Thin-Walled Members: Problem Solving01:07

Unsymmetric Loading of Thin-Walled Members: Problem Solving

346
The shear center of a channel section with uniform thickness, height, and width, is determined by computing the shear force in the member and calculating the moments of inertia of the sections.
To compute the shear forces, find the shear flow at a specific distance from the endpoint using the vertical shear and the moment of inertia values. The total shear force on the flange is calculated by integrating the shear flow from one end of the flange to the other.
Next, calculate the moments of...
346
Interference and Diffraction02:18

Interference and Diffraction

50.7K
Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
50.7K
Deformation in a Circular Shaft01:10

Deformation in a Circular Shaft

685
One of the distinctive characteristics of circular shafts is their ability to maintain their cross-sectional integrity under torsion. In other words, each cross-section continues to exist as a flat, unaltered entity, simply rotating like a solid, rigid slab. To understand the distribution of shearing stress within such a shaft, consider a cylindrical section inside this circular shaft. This section has a length of L and a radius of R, with one end fixed. The radius of the cylindrical section is...
685
Shear on the Horizontal Face of a Beam Element01:16

Shear on the Horizontal Face of a Beam Element

419
To understand shear on the flat side of a prismatic beam element, consider the vertical and horizontal shearing forces, and the normal forces, acting on the element. The element's upper (U) and lower (L) sections, which are divided by the beam's neutral axis, are examined. The equilibrium of these forces is determined by applying the equilibrium equation, which helps identify the horizontal shearing force. This force is directly related to the bending moments and the cross-section's...
419
IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations01:08

IR Spectrum Peak Splitting: Symmetric vs Asymmetric Vibrations

1.5K
Identical bonds within a polyatomic group can stretch symmetrically (in-phase) or asymmetrically (out-of-phase). Similar to hydrogen bonding, these vibrations also influence the shape of the IR peak. Generally, asymmetric stretching frequencies are higher than symmetric stretching frequencies. For example, primary amines exhibit two distinct IR peaks between 3300–3500 cm−1 corresponding to the symmetric and asymmetric N-H stretching, while secondary amines exhibit a single...
1.5K
Eccentric Axial Loading in a Plane of Symmetry01:16

Eccentric Axial Loading in a Plane of Symmetry

417
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
417

You might also read

Related Articles

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

Sort by
Same author

Electron-ion equilibration in superheated gold.

Nature communications·2026
Same author

Air attenuation of high power XFEL beams.

Journal of synchrotron radiation·2026
Same author

Demonstration of a diamond anvil cell platform at the Linac Coherent Light Source: capabilities and outlook.

Journal of synchrotron radiation·2026
Same author

Time-resolved X-ray imaging of the current filamentation instability in solid-density plasmas.

Nature communications·2026
Same author

Shock compression of FeOOH and implications for iron-water interactions in super-earth magma oceans.

Nature communications·2025
Same author

Measurement of turbulent velocity and bounds for thermal diffusivity in laser shock compressed foams by x-ray photon correlation spectroscopy.

Physical review. E·2025

Related Experiment Video

Updated: Dec 2, 2025

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

10.0K

Ronchi shearing interferometry for wavefronts with circular symmetry.

Bob Nagler1, Eric C Galtier1, Shaughnessy B Brown1

  • 1SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.

Journal of Synchrotron Radiation
|November 4, 2020
PubMed
Summary

Researchers developed a simple algorithm to quantitatively assess X-ray wavefronts using Ronchi testing at free-electron laser (FEL) facilities. This method leverages the circular symmetry of aberrations for accurate beam characterization.

Keywords:
X-ray FELgrating interferometrywavefront sensing

More Related Videos

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
13:07

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Published on: January 15, 2022

4.3K
High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
07:55

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

10.5K

Related Experiment Videos

Last Updated: Dec 2, 2025

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
10:39

Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating

Published on: October 11, 2016

10.0K
Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
13:07

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Published on: January 15, 2022

4.3K
High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
07:55

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

10.5K

Area of Science:

  • Optics and Photonics
  • X-ray Science
  • Beam Diagnostics

Background:

  • Ronchi testing is widely used at X-ray free-electron laser (FEL) facilities for qualitative wavefront evaluation.
  • It offers a quick, straightforward method for on-the-fly interpretation and alignment of phase plates.
  • A single Ronchigram typically lacks sufficient data for complete quantitative wavefront analysis.

Purpose of the Study:

  • To present a simple algorithm for quantitative wavefront recovery from a single Ronchigram.
  • To exploit the circular symmetry of aberrations common in compound refractive lenses at X-ray FELs.
  • To apply the algorithm to experimental measurements at a specific FEL facility.

Main Methods:

  • Development of a novel algorithm for wavefront reconstruction.
  • Assumption of circular symmetry in beam aberrations.
  • Application and validation using experimental data from the Linac Coherent Light Source (LCLS).

Main Results:

  • Successful quantitative recovery of the full wavefront from a single Ronchigram.
  • Demonstration of the algorithm's effectiveness on nano-focused beams.
  • Validation of the method with experimental measurements at the Matter in Extreme Conditions instrument.

Conclusions:

  • The developed algorithm enables quantitative wavefront characterization using a single Ronchigram.
  • Exploiting aberration symmetry significantly enhances the diagnostic capabilities of Ronchi testing.
  • This technique offers a valuable tool for optimizing beam quality at X-ray FELs.