Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Atomic Nuclei: Magnetic Resonance

Atomic Nuclei: Magnetic Resonance

The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...

Atomic Nuclei: Nuclear Relaxation Processes

Atomic Nuclei: Nuclear Relaxation Processes

In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis, the precessing magnetic moments are randomly oriented around the z-axis.

Atomic Nuclei: Nuclear Magnetic Moment

Atomic Nuclei: Nuclear Magnetic Moment

All atomic nuclei are positively charged. When they have a nonzero spin, they behave like rotating charges. As a consequence of their charge and spin, these nuclei generate a magnetic field (B). This, in turn, gives rise to a magnetic moment (μ), which is randomly oriented in the absence of an external magnetic field. When an external magnetic field (B0) is applied, the magnetic moment vectors can align with the field or against it in 2 + 1 orientations. A hydrogen nucleus, which is just a...

Atomic Nuclei: Larmor Precession Frequency

Atomic Nuclei: Larmor Precession Frequency

The earth's gravitational field produces a 'twisting force' perpendicular to the angular momentum of a spinning mass (such as a spinning top) that causes the mass to 'wobble' around the gravitational field axis in a phenomenon called precession. Similarly, the magnetic moment (μ) of a spinning nucleus precesses due to an external magnetic field directed along the z-axis. The precession of the magnetic moment vector about the magnetic field is called Larmor precession,...

Atomic Nuclei: Nuclear Spin State Population Distribution

Atomic Nuclei: Nuclear Spin State Population Distribution

Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.

Atomic Nuclei: Nuclear Spin State Overview

Atomic Nuclei: Nuclear Spin State Overview

NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...

You might also read

Related Articles

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

Sort by

Same author

Low-Energy Dipole Strength Distribution in ^{102}Ru: Coexistence of Scissors and Octupole Resonances.

Physical review letters·2026

Same author

First Measurement of the Quadrupole Moment of the 2_{1}^{+} State in ^{110}Sn.

Physical review letters·2025

Same author

Abrupt structural transition in exotic molybdenum isotopes unveils an isospin-symmetric island of inversion.

Nature communications·2025

Same author

Z=14 Magicity Revealed by the Mass of the Proton Dripline Nucleus ^{22}Si.

Physical review letters·2025

Same author

Seniority Structure in Neutron-Rich Nucleus ^{128}Ag: Evidence for Robustness of N=82 Shell Closure in Silver Isotopes.

Physical review letters·2025

Same author

Isospin Symmetry Breaking in the ^{71}Kr and ^{71}Br Mirror System.

Physical review letters·2025

Search research articles

Related Experiment Video

Updated: Mar 16, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

Magnetic Rotation in the A = 80 Region: M1 Bands in Heavy Rb Isotopes.

R Schwengner¹, H Schnare¹, S Frauendorf¹

¹Institut für Kern- und Hadronenphysik, FZ Rossendorf, 01314 Dresden, Germany.

Journal of Research of the National Institute of Standards and Technology

|August 24, 2016

Summary

Researchers investigated isotopes Rubidium-82, Rubidium-83, and Rubidium-84 for magnetic rotation. They discovered magnetic dipole bands in odd-odd nuclei, providing the first evidence of magnetic rotation in the A ≈ 80 mass region.

Keywords:

in-beam γ-spectroscopy magnetic dipole bands tilted-axis cranking model

More Related Videos

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

Published on: October 9, 2020

Hyperpolarized Xenon for NMR and MRI Applications

Hyperpolarized Xenon for NMR and MRI Applications

Published on: September 6, 2012

Related Experiment Videos

Last Updated: Mar 16, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

High-Temperature and High-Pressure In situ Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy

Published on: October 9, 2020

Hyperpolarized Xenon for NMR and MRI Applications

Hyperpolarized Xenon for NMR and MRI Applications

Published on: September 6, 2012

Area of Science:

Nuclear Physics
Atomic Physics

Background:

Magnetic rotation is a predicted phenomenon in nuclear physics.
The tilted-axis cranking model predicts magnetic rotation in specific mass regions.

Purpose of the Study:

To search for magnetic rotation in the A ≈ 80 mass region.
To investigate excited states in Rubidium isotopes (82Rb, 83Rb, 84Rb).

Main Methods:

Excited states populated via the (11B) + (76Ge) nuclear reaction at 50 MeV.
Gamma-coincidence experiments conducted using the GASP spectrometer.

Main Results:

Magnetic dipole bands were observed in all studied Rubidium isotopes.
Regular M1 bands with decreasing B(M1)/B(E2) ratios were found in 82Rb and 84Rb.
Non-regular M1 sequences with staggering B(M1)/B(E2) ratios were observed in 83Rb.

Conclusions:

The study provides the first evidence of magnetic rotation in the A ≈ 80 mass region.
Observed bands in 82Rb and 84Rb are interpreted as magnetic rotation based on four-quasiparticle configurations within the tilted-axis cranking model.