Observation of Real Time Magnetization Inversion-recovery Using the SPAM Geometry and the CERMIT Protocol

Abstract

We mechanically measure in real time the recovery of nuclear magnetization in an inversion-recovery experiment using a force gradient protocol by monitoring the frequency of a driven cantilever. The Ga69 polarization is initially inverted with a wide adiabatic rapid passage sweep lasting 20 ms. After inverting the polarization, we observe in real time the initial <50 mHz transient decay back to the base line as the polarization realigns along the Zeeman axis with a T1 of approximately 20 min for T = 4.8 K. The magnetization is shown to be inversely linear with temperature. The RF is on only during the adiabatic rapid passage sweep.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2011
Accession Number
ADA551787

Entities

People

  • Dimitri A. Alexson
  • Doran D. Smith

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Sensors

DTIC Thesaurus Topics

  • Detectors
  • Frequency
  • Geometry
  • Inversion
  • Lasers
  • Magnetic Fields
  • Magnetization
  • Measurement
  • Monitoring
  • Optical Fibers
  • Peak Values
  • Polarization
  • Recovery
  • Resonance
  • Resonant Frequency
  • Sine Waves
  • Vibration

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Mathematics or Statistics
  • Quantum spin resonance or Electron Paramagnetic Resonance spectroscopy.