Jove
Visualize
Contact Us

Related Concept Videos

Double Resonance Techniques: Overview01:12

Double Resonance Techniques: Overview

Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...

You might also read

Related Articles

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

Sort by
Same author

Laser schlieren microphone for optoacoustic spectroscopy.

Applied optics·2010
Same author

Photoacoustic generation of anisotropic pressure waves through photodissociation of Cl(2).

Optics letters·2009
Same author

Photoacoustic point source.

Physical review letters·2001
Same author

Developmental disabilities and the new paradigm: directions for the 1990s.

Mental retardation·1991
Same author

Photoacoustic "signatures" of particulate matter: optical production of acoustic monopole radiation.

Science (New York, N.Y.)·1990
Same author

Drug interaction for plasma protein binding: physostigmine and other drugs.

International journal of clinical pharmacology, therapy, and toxicology·1987
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 Experiment Video

Updated: Jul 2, 2026

Studying Cavitation Enhanced Therapy
07:36

Studying Cavitation Enhanced Therapy

Published on: April 9, 2021

Noise reduction in EPR discharge-flow studies.

G J Diebold1, D L McFadden

  • 1Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02167, USA.

The Review of Scientific Instruments
|February 1, 1979
PubMed
Summary

Intense spectrometer noise in electron paramagnetic resonance (EPR) detection can be eliminated by adding an electron scavenger. This allows for the study of transient species milliseconds after electrical discharge formation.

Area of Science:

  • Physical Chemistry
  • Spectroscopy
  • Chemical Physics

Background:

  • Electron paramagnetic resonance (EPR) spectroscopy is a powerful technique for studying species with unpaired electrons.
  • Discharge-flow systems are often used to generate and study transient chemical species.
  • Spectrometer noise can limit the sensitivity and applicability of EPR in discharge-flow systems.

Purpose of the Study:

  • To identify the source of intense spectrometer noise in discharge-flow EPR systems.
  • To develop a method for suppressing this noise to enable the study of transient species.
  • To demonstrate the utility of EPR spectroscopy for investigating short-lived species in electrical discharges.

Main Methods:

  • Utilized discharge-flow systems coupled with electron paramagnetic resonance (EPR) detection.

More Related Videos

Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo
08:01

Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo

Published on: September 26, 2016

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

Related Experiment Videos

Last Updated: Jul 2, 2026

Studying Cavitation Enhanced Therapy
07:36

Studying Cavitation Enhanced Therapy

Published on: April 9, 2021

Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo
08:01

Rapid Scan Electron Paramagnetic Resonance Opens New Avenues for Imaging Physiologically Important Parameters In Vivo

Published on: September 26, 2016

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging
06:34

In Situ Monitoring of Diffusion of Guest Molecules in Porous Media Using Electron Paramagnetic Resonance Imaging

Published on: September 2, 2016

  • Investigated the origin of spectrometer noise under specific discharge conditions.
  • Introduced an electron scavenger, sulfur hexafluoride (SF6), into the flow system.
  • Analyzed the impact of SF6 addition on noise levels and EPR signal quality.

    • Main Results:

    • Identified free electrons generated in the electrical discharge as the cause of intense spectrometer noise.
    • Demonstrated that the addition of SF6 effectively suppresses the observed noise.
    • Showcased the ability to detect and study transient species within milliseconds of their formation using EPR after noise suppression.

    Conclusions:

    • Free electrons in electrical discharges are a significant source of noise in EPR spectroscopy.
    • Electron scavengers, such as SF6, are effective in mitigating this noise.
    • The developed method enhances the capability of EPR spectroscopy for time-resolved studies of transient species in electrical discharges.