6533b852fe1ef96bd12aabe2
RESEARCH PRODUCT
Offline commissioning of a new gas cell for the MARA Low-Energy Branch
A. ZadvornayaJ. RomeroT. EronenW. GinsA. KankainenI.d. MooreP. PapadakisI. PohjalainenM. ReponenS. Rinta-antilaJ. SarénD. SimonovskiJ. Uusitalosubject
223Ra α-recoil sourceNuclear and High Energy Physicstutkimuslaitteetgas cellin-gas laser ionizationydinfysiikkaInstrumentationMARA-LEBdescription
Results of offline commissioning tests for a new dedicated gas cell for the Mass Analysing Recoil Apparatus (MARA) Low-Energy Branch are reported. Evacuation time, ion survival and transport efficiency in helium buffer gas were characterized with a radioactive 223Ra 𝛼-recoil source. Suppression of the ion signal, originating from non-neutralized species in the gas cell, was explored with 219Rn ions, the daughter recoil of 223Ra, as a function of voltage applied to one of the ion-collector electrodes. Two-step laser resonance ionization of stable tin isotopes produced inside the gas cell from a heated bronze filament was demonstrated, and broadening of the atomic resonances in argon buffer gas was studied. These tests indicate the suitability of the new gas cell for future in-gas laser spectroscopy studies of exotic nuclei at the Accelerator Laboratory of the University of Jyväskylä. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2023-06-01 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms |