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Zeeman effect in CaF(2Pi(3/2)).

R V Krems1, D Egorov, J S Helton

  • 1Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA. rkrems@cfa.harvard.edu

The Journal of Chemical Physics
|January 7, 2005
PubMed
Summary
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The Zeeman effect in Calcium Fluoride (CaF) molecules was studied using magnetic fields. Findings show magnetic trapping potential for CaF molecules with large rotational constants.

Area of Science:

  • Molecular Physics
  • Quantum Chemistry
  • Spectroscopy

Background:

  • The Zeeman effect provides insights into the magnetic properties of molecules.
  • Understanding the excited states of molecules like Calcium Fluoride (CaF) is crucial for various applications.

Purpose of the Study:

  • To measure and analyze the Zeeman effect in the excited A 2Pi(3/2) state of CaF across a broad magnetic field range.
  • To evaluate the accuracy of a ligand-field theory model for the CaF Zeeman spectrum.

Main Methods:

  • Experimental measurement of the Zeeman effect in CaF.
  • Analysis of Zeeman level splitting and its dependence on magnetic field strength.
  • Application of ligand-field theory to model the Zeeman spectrum.

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Main Results:

  • Zeeman level splitting is significantly influenced by coupling between rotational states.
  • No low-field seeking states were observed in the J=3/2 manifold at high magnetic fields.
  • The ligand-field theory model accurately predicted the Zeeman spectrum from 0-5 Tesla.

Conclusions:

  • The magnetic moment of CaF(A 2Pi(3/2)) is primarily determined by single-electron spin and orbital motion.
  • Molecules in the 2Pi(3/2) state require substantial rotational constants for effective magnetic trapping in high fields.