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Updated: Mar 29, 2026
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Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
Published on: November 9, 2015
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The valence-fluctuating ground state of plutonium
Marc Janoschek1, Pinaki Das1, Bismayan Chakrabarti2
1Los Alamos National Laboratory, Los Alamos, NM 87545, USA.
Science Advances
|November 25, 2015
Summary
Neutron spectroscopy reveals plutonium
Area of Science:
- Material science
- Condensed matter physics
- Quantum mechanics
Background:
- Complex materials' properties are governed by electronic correlations.
- Understanding the interplay between localized and itinerant electrons is challenging.
- Plutonium is a key material exhibiting characteristics between localized and itinerant states.
Purpose of the Study:
- Investigate the electronic structure of plutonium.
- Resolve the debate on plutonium's magnetism.
- Explore valence fluctuations in complex materials.
Main Methods:
- Neutron spectroscopy was employed to study plutonium.
- Experimental data was compared with theoretical predictions.
Main Results:
- Plutonium's ground state is characterized by valence fluctuations.
- This state represents a quantum superposition of localized and itinerant electronic configurations.
- Results align with dynamical mean field theory predictions.
Conclusions:
- The study resolves the controversy surrounding plutonium's magnetism.
- Valence fluctuations are key to understanding plutonium's electronic behavior.
- Provides insights into electronic dichotomies in complex materials.
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