6533b851fe1ef96bd12a98aa
RESEARCH PRODUCT
X-ray production with heavy post-accelerated radioactive-ion beams in the lead region of interest for Coulomb-excitation measurements
N. BreeP. A. ButlerTuomas GrahnTuomas GrahnMark HuyseA. PettsK. Wrzosek-lipskaK. Wrzosek-lipskaN. KestelootJanne PakarinenJanne PakarinenP. Van DuppenLiam GaffneyLiam GaffneyN. Warrsubject
Nuclear reactionNuclear and High Energy PhysicsSpectrometerIsotopeta114Coulomb excitationchemistry.chemical_elementRadonCoulomb excitation7. Clean energychemistrygamma-ray spectroscopyExcited stateGamma spectroscopyAtomic physicsNuclear ExperimentInstrumentationPoloniumK X-ray productiondescription
Abstract Characteristic K X-rays have been observed in Coulomb-excitation experiments with heavy radioactive-ion beams in the lead region (Z = 82), produced at the REX-ISOLDE facility, and were used to identify the decay of strongly converted transitions as well as monopole 0 2 + → 0 1 + transitions. Different targets were used, and the X-rays were detected by the Miniball γ-ray spectrometer surrounding the target position. A stable mercury isotope, as well as neutron-deficient mercury, lead, polonium, and radon isotopes were studied, and a detailed description of the analysis using the radioactive 182,184,186,188Hg isotopes is presented. Apart from strongly converted transitions originating from the decay of excited states, the heavy-ion induced K-vacancy creation process has been identified as an extra source for K X-ray production. Isolating the atomic component of the observed K X-rays is essential for a correct analysis of the Coulomb-excitation experiment. Cross sections for the atomic reaction have been estimated and are compared to a theoretical approach.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-10-01 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |