Speaker
Description
A milestone of the 2024 ISAC RIB campaign at TRIUMF was the successful extraction and measurement of 14Be at the GRIFFIN detector. The interest for 14Be production in ISAC is mainly driven by the beta-decay studies of halo nuclei and their mass measurements. Due to the low production rate of 14Be and its very short half-life (4.35 ms), this rare exotic isotope challenges the limits of the ISOL targets and laser ion sources.
To achieve the goal of 14Be production a new tantalum target was optimized for fast isotope releases, heat transfer, and in target production. Analysis, simulations and experimental studies led to the development of a target with thinner tantalum foils and a total target thickness 40% of a standard ISAC target. The proton beam was rotated on the tantalum target for a more uniform temperature distribution, at an unprecedented high intensity of 85 micro-amperes (40.8 kW). An optical diagnostic to measure and monitor the temperature of the target in real time was used during the target run.
This work reports on the 14Be campaign, the target design, real-time diagnostics, beam delivery techniques and yields of other short-lived isotopes such as 12Be, 11Li, 9Li and 8Li.
| Email address | aureliat@triumf.ca |
|---|---|
| Funding Agency | TRIUMF, NRC of Canada, University of Liverpool’s Department of Physics, School of Physical Sciences |
| Classification | Isotope production, target, and ion source techniques |
