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

Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.1K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.1K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1.2K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.2K
Mutual Inductance01:24

Mutual Inductance

2.9K
Inductance is the property of a device that tells us how effectively it induces an emf in another device. In other words, it is a physical quantity that expresses the effectiveness of a given device.
When two circuits carrying time-varying currents are close to one another, the magnetic flux through each circuit varies because of the changing current in the other circuit. Consequently, an emf is induced in each circuit by the changing current in the other. Therefore, this type of emf is called...
2.9K
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1.2K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the...
1.2K
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

247
Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
247
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

5.0K
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
5.0K

You might also read

Related Articles

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

Sort by
Same author

Fixation Strategies in Hoffa Fractures: A Systematic Review and Meta-Analysis of Surgical Outcomes.

Indian journal of orthopaedics·2026
Same author

The Hidden Threat: Polyarticular Septic Arthritis Unmasking Disseminated Melioidosis.

Journal of orthopaedic case reports·2026
Same author

Muon-Decay Parameters from COHERENT.

Physical review letters·2025
Same author

Precision Matters: Comparative Analysis of Fibular Tunnel Trajectories in PLC Reconstruction: A Cadaveric Study.

Indian journal of orthopaedics·2025
Same author

Sculpting Solutions: 3D-Printed Models Transform Osteotomy Planning in Monteggia Fractures.

Journal of orthopaedic case reports·2025
Same author

Rehabilitation After Lower Limb Fracture Fixation in Osteoporotic Bone.

Indian journal of orthopaedics·2025

Related Experiment Video

Updated: Oct 29, 2025

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

27.1K

Betatron coupling measurement and optimization in Indus-2 storage ring.

Riyasat Husain1, Suraj Prakash1, A D Ghodke1

  • 1Accelerator Physics Section, Raja Ramanna Centre for Advanced Technology (RRCAT), Indore 452013, India.

The Review of Scientific Instruments
|July 10, 2021
PubMed
Summary

Correcting emittance coupling in synchrotron storage rings enhances photon beam brightness. Studies on the Indus-2 storage ring reduced coupling by 0.8% to 0.4% and simulated further reductions to <0.04% for a tenfold brightness increase.

More Related Videos

Magnetic Tweezers for the Measurement of Twist and Torque
11:41

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

23.5K
Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
09:43

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

9.6K

Related Experiment Videos

Last Updated: Oct 29, 2025

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

27.1K
Magnetic Tweezers for the Measurement of Twist and Torque
11:41

Magnetic Tweezers for the Measurement of Twist and Torque

Published on: May 19, 2014

23.5K
Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement
09:43

Optimized Setup and Protocol for Magnetic Domain Imaging with In Situ Hysteresis Measurement

Published on: November 7, 2017

9.6K

Area of Science:

  • Accelerator Physics
  • Synchrotron Radiation Technology

Background:

  • Photon beam brightness is crucial for synchrotron radiation sources.
  • Emittance coupling, primarily caused by skew quadrupolar errors, limits brightness in storage rings.

Purpose of the Study:

  • To measure and correct betatron coupling in the Indus-2 storage ring.
  • To explore advanced methods for further reducing emittance coupling and enhancing beam brightness.

Main Methods:

  • Betatron coupling measured using tune split and Linear Optics from Closed Orbit (LOCO) techniques.
  • Correction applied using four skew quadrupole power supplies.
  • Simulation studies employed the LOCO model and a multi-objective differential evolution algorithm with sixteen power supplies.

Main Results:

  • Measured coupling ratio of ~0.8% closely matched the LOCO model.
  • LOCO correction reduced coupling to ~0.4%, limited by available degrees of freedom.
  • Simulations with sixteen power supplies achieved an emittance ratio <0.04%, increasing brightness by an order of magnitude.

Conclusions:

  • The study successfully demonstrated the reduction of emittance coupling in the Indus-2 storage ring.
  • Advanced optimization techniques with increased control offer significant potential for brightness enhancement.
  • The optimization method provides valuable trade-offs for selecting optimal beam parameters.