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Updated: Dec 14, 2025
08:22
Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
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High-resolution laser resonance ionization spectroscopy of Pm
Dominik Studer1, Jiri Ulrich2, Saverio Braccini3
1Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099 Mainz, Germany.
The European Physical Journal. A, Hadrons and Nuclei
|July 21, 2020
Summary
High-resolution laser spectroscopy reveals nuclear properties of Promethium-147. This study determined nuclear magnetic dipole and electric quadrupole moments, and changes in nuclear charge radii.
Area of Science:
- Atomic Physics
- Nuclear Physics
- Laser Spectroscopy
Background:
- Long-lived radioactive isotopes like Promethium-147 (Pm) are crucial for understanding nuclear structure.
- High-resolution laser spectroscopy provides precise measurements of atomic and nuclear properties.
Purpose of the Study:
- To investigate the hyperfine structures and isotope shifts of Pm.
- To derive nuclear magnetic dipole and electric quadrupole moments for Pm.
- To extract changes in nuclear mean square charge radii.
Main Methods:
- In-source laser spectroscopy was employed at the RISIKO mass separator in Mainz.
- The PI-LIST ion source was utilized for efficient ion production.
- Two atomic ground-state transitions at 452 nm and 468 nm were probed.
Main Results:
- Hyperfine coupling constants were determined from the measured hyperfine structures.
- Nuclear magnetic dipole and electric quadrupole moments for Pm were derived.
- Isotope shifts were measured, enabling the extraction of changes in nuclear mean square charge radii.
Conclusions:
- The study successfully characterized key nuclear properties of Pm using advanced laser spectroscopy techniques.
- The derived nuclear moments and charge radii provide valuable data for nuclear models.
- This research contributes to a deeper understanding of the structure of radioactive isotopes.
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