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

UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

1.6K
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...
1.6K
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

1.4K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
1.4K
Atomic Absorption Spectroscopy: Radiation and Light Sources01:13

Atomic Absorption Spectroscopy: Radiation and Light Sources

452
Atomic absorption spectroscopy (AAS) relies on the Beer-Lambert law, which requires that the radiation source emits a narrow range of wavelengths to match the absorption characteristics of the analyte atom. The primary criteria for choosing an appropriate radiation source in AAS is to provide a precise and intense emission at specific wavelengths that will allow accurate detection of the analyte.
Two common narrow-range 'line' sources used in AAS are hollow-cathode lamps (HCLs) and...
452
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

811
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
811
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

547
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.
547
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

852
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
852

You might also read

Related Articles

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

Sort by
Same author

Synergistic engineering of a carbon-coated Cu<sub>1.81</sub>S/ZnS composite <i>via</i> a high-temperature mixing method for enhanced lithium storage.

Dalton transactions (Cambridge, England : 2003)·2026
Same author

"Just the Best Ones" combination: a new strategy for multi-epitope vaccine candidate based on immunoinformatics analysis to induce protective immunity against MRSA infection.

Microbiology spectrum·2026
Same author

Machine learning prediction models for intravenous immunoglobulin resistance in Kawasaki disease: a meta-analysis.

BMC medical informatics and decision making·2026
Same author

Biodegradable microplastics-induced free-living nitrogen fixation enhancement and diazotrophic community differentiation in soils.

Journal of environmental management·2026
Same author

Frequency reproducibility of solid-state thorium-229 nuclear clocks.

Nature·2026
Same author

<i>Lysinibacillus macroides</i> 38352 isolated from traditional Chinese fermented foods: a dual effect on ochratoxin A detoxification and immune suppression alleviation.

Microbiology spectrum·2026

Related Experiment Video

Updated: Jul 29, 2025

Molecular Beam Mass Spectrometry With Tunable Vacuum Ultraviolet VUV Synchrotron Radiation
09:53

Molecular Beam Mass Spectrometry With Tunable Vacuum Ultraviolet VUV Synchrotron Radiation

Published on: October 30, 2012

13.0K

Tunable VUV frequency comb for 229mTh nuclear spectroscopy.

Chuankun Zhang, Peng Li, Jie Jiang

    Optics Letters
    |May 23, 2023
    PubMed
    Summary

    Researchers developed a tunable vacuum-ultraviolet frequency comb for laser spectroscopy of the Thorium-229m nuclear clock transition. This advancement is crucial for building next-generation nuclear optical clocks.

    More Related Videos

    Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
    10:42

    Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

    Published on: May 3, 2019

    6.8K
    Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
    11:45

    Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

    Published on: August 17, 2017

    14.5K

    Related Experiment Videos

    Last Updated: Jul 29, 2025

    Molecular Beam Mass Spectrometry With Tunable Vacuum Ultraviolet VUV Synchrotron Radiation
    09:53

    Molecular Beam Mass Spectrometry With Tunable Vacuum Ultraviolet VUV Synchrotron Radiation

    Published on: October 30, 2012

    13.0K
    Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
    10:42

    Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

    Published on: May 3, 2019

    6.8K
    Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
    11:45

    Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

    Published on: August 17, 2017

    14.5K

    Area of Science:

    • Atomic Physics
    • Quantum Optics
    • Nuclear Physics

    Background:

    • The Thorium-229m (229mTh) nuclear clock transition is a promising candidate for next-generation optical clocks.
    • Precise laser spectroscopy is required to probe the 229mTh transition.
    • Vacuum ultraviolet (VUV) lasers are necessary for this spectroscopy due to the transition's energy.

    Purpose of the Study:

    • To present a novel tunable VUV frequency comb system.
    • To enable laser spectroscopy of the 229mTh nuclear clock transition.
    • To support the development of nuclear optical clocks.

    Main Methods:

    • Cavity-enhanced seventh-harmonic generation was employed to produce VUV light.
    • A tunable frequency comb in the VUV spectrum was generated.
    • The system's spectral coverage was characterized.

    Main Results:

    • A tunable VUV frequency comb was successfully demonstrated.
    • The comb's spectrum spans the uncertainty range of the 229mTh nuclear clock transition.
    • This provides a crucial tool for future 229mTh clock research.

    Conclusions:

    • The developed VUV frequency comb is a significant advancement for nuclear clock research.
    • It facilitates precise laser spectroscopy of the 229mTh transition.
    • This work paves the way for realizing nuclear-based optical clocks.