6533b851fe1ef96bd12a8de2
RESEARCH PRODUCT
High-resolution laser spectroscopy of long-lived plutonium isotopes
Iain MooreNorbert TrautmannPaul CampbellSebastian RaederBradley ChealIlkka PohjalainenVolker SonnenscheinKlaus WendtAnnika VossT. Kronsubject
plutoniumAtomic Physics (physics.atom-ph)collinear laser spectroscopyFOS: Physical sciencesHigh resolutionPlutonium isotopes01 natural sciencesPhysics - Atomic PhysicsCLs upper limits0103 physical sciencesNuclear Experiment (nucl-ex)010306 general physicsSpectroscopyHyperfine structureNuclear ExperimentisotopesPhysicsisotoopitta114010308 nuclear & particles physics/dk/atira/pure/subjectarea/asjc/3100/3107Charge (physics)Atomic and Molecular Physics and Opticshigh-resolution resonance ionization spectroscopyResonance ionizationAtomic physicsdescription
Long-lived isotopes of plutonium were studied using two complementary techniques, high-resolution resonance ionisation spectroscopy (HR-RIS) and collinear laser spectroscopy (CLS). Isotope shifts have been measured on the $5f^67s^2\ ^7F_0 \rightarrow 5f^56d^27s\ (J=1)$ and $5f^67s^2\ ^7F_1 \rightarrow 5f^67s7p\ (J=2)$ atomic transitions using the HR-RIS method and the hyperfine factors have been extracted for the odd mass nuclei $^{239,241}$Pu. Collinear laser spectroscopy was performed on the $5f^67s\ ^8F_{1/2} \rightarrow J=1/2\; (27523.61\text{cm}^{-1})$ ionic transition with the hyperfine $A$ factors measured for $^{239}$Pu. Changes in mean-squared charge radii have been extracted and show a good agreement with previous non-optical methods, with an uncertainty improvement by approximately one order of magnitude. Plutonium represents the heaviest element studied to date using collinear laser spectroscopy.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-03-24 |