6533b854fe1ef96bd12aeb9d
RESEARCH PRODUCT
In-gas-cell laser ionization studies of plutonium isotopes at IGISOL
Norbert TrautmannKlaus WendtIlkka PohjalainenIain MooreVolker SonnenscheinAnnika VossT. KronHideki TomitaSebastian Raedersubject
Nuclear and High Energy PhysicsplutoniumAnalytical chemistrychemistry.chemical_element01 natural sciences7. Clean energylaw.inventionlawIonization0103 physical sciencesPhysics::Atomic PhysicsNuclear Experiment010306 general physicsSpectroscopyInstrumentationHeliumArgonta114010308 nuclear & particles physicsgas cellActinideLaserPlutoniumchemistryresonance laser ionizationMass spectrumgas phase chemistrydescription
Abstract In-gas-cell resonance laser ionization has been performed on long-lived isotopes of Pu at the IGISOL facility, Jyvaskyla. This initiates a new programme of research towards high-resolution optical spectroscopy of heavy actinide elements which can be produced in sufficient quantities at research reactors and transported to facilities elsewhere. In this work a new gas cell has been constructed for fast extraction of laser-ionized elements. Samples of 238–240,242 Pu and 244 Pu have been evaporated from Ta filaments, laser ionized, mass separated and delivered to the collinear laser spectroscopy station. Here we report on the performance of the gas cell through studies of the mass spectra obtained in helium and argon, before and after the radiofrequency quadrupole cooler-buncher. This provides valuable insight into the gas phase chemistry exhibited by Pu, which has been additionally supported by measurements of ion time profiles. The resulting monoatomic yields are sufficient for collinear laser spectroscopy. A gamma-ray spectroscopic analysis of the Pu samples shows a good agreement with the assay provided by the Mainz Nuclear Chemistry department.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-06-01 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |