1–4 Sept 2024
CERN
Europe/Zurich timezone

Project title: Electron affinity measurements by collinear laser photodetachment spectroscopy on negative ions

2 Sept 2024, 15:35
30m
503/1-001 - Council Chamber (CERN)

503/1-001 - Council Chamber

CERN

See timetable for exact location. Registration will be at the CERN Gateway just as the Public Lecture on Tuesday 3 September Lectures will be at the Council Chamber ( 503/1-001) on Monday 2nd & Wednesday 4th September Lectures will be in the Curie Room (40/S2-C01 ) on Tuesday 3rd (Morning)
162
Show room on map

Speaker

Miranda Nichols (Gothenburg University (SE))

Description

The project of Early Stage Researcher 6 (ESR06), originally set to measure the electron affinity of an actinide, had to be adapted due to unforeseen circumstances. During their secondment with the CRIS experiment at ISOLDE-CERN, 238U− was successfully produced via two consecutive electron capture reactions. These results led to the theoretical work of the ESR, where they computed electron capture cross-sections for bare ion collisions with hydrogen using the Crank-Nicolson
method. Having proven the method agrees with experiments and other theoretical models, they now plan on calculating actinide collisions. In Gothenburg, a high-precision method for measuring electron affinity values, applied to cesium and rubidium, showed applicability for francium and actinides. Stockholm studies using the DESIREE cryogenic storage ring demonstrated the manipulation of bound anionic states with lasers, also promising for actinide research. Overall, although photodetachment studies were delayed, the groundwork laid seems encouraging future work on actinide anions.

Presentation materials