Rapid extraction of short-lived isotopes from a buffer gas cell for use in 
gas-phase chemistry experiments. Part I: Off-line studies with219Rn and 221Fr

Goetz, S.; Raeder, S.; Block, M.; Duellmann, Ch. E.; Goetz, M.; Jaeger, E.; Kaleja, O.; Krier, J.; Lens, L.; Mistry, A. K.; Mokry, Ch.; Runke, J.; Thoerle-Pospiech, P.; Yakushev, A.

doi:10.1016/j.nima.2021.165090

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Rapid extraction of short-lived isotopes from a buffer gas cell for use in gas-phase chemistry experiments. Part I: Off-line studies with ²¹⁹Rn and ²²¹Fr

MPS-Authors

/persons/resource/persons232105

Kaleja, O.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Goetz, S., Raeder, S., Block, M., Duellmann, C. E., Goetz, M., Jaeger, E., et al. (2021). Rapid extraction of short-lived isotopes from a buffer gas cell for use in gas-phase chemistry experiments. Part I: Off-line studies with ²¹⁹Rn and ²²¹Fr. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 995: 165090. doi:10.1016/j.nima.2021.165090.

Cite as: https://hdl.handle.net/21.11116/0000-000A-3834-D

Abstract

To study the chemical properties of the heaviest elements, a fast and
efficient stopping and extraction of the highly energetic residues from
heavy ion fusion reactions into the chemistry setup is essential.
Currently used techniques like Recoil Transfer Chambers (RTC) relying on
gas flow extraction provide high efficiencies for chemically
non-reactive volatile species, but operate at extraction times t(extr)
of about 0.5 s or more. Buffer Gas Cells (BGC) with electric and
Radio-Frequency (RF) fields offer much faster extraction times. Here, we
demonstrate the successful coupling of a BGC to a gas chromatography
setup as is used for studies of chemical properties of superheavy
elements. Using Ra-223 and Ac-225 recoil ion sources providing Rn-219
and Fr-221 ions for off-line tests, an extraction time t(extr) = 55(4)
ms and an extraction efficiency of 35(3)% were achieved for the
non-reactive Rn-219, while Fr-221 was retained. The results show a
BGC-based setup to be suitable for gas-phase experiments with
short-lived volatile transactinide elements like Cn and Fl with
half-lives substantially below 1 s.