An update on the performance of the in situ 14C extraction line at the University of Bern

Sliz, M U; Espic, C; Hofmann, B A; Leya, I; Szidat, S (2020). An update on the performance of the in situ 14C extraction line at the University of Bern. Radiocarbon, 62(5), pp. 1371-1388. Arizona Board of Regents, University of Arizona 10.1017/RDC.2020.38

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We present the current performance of the in situ radiocarbon (14C) extraction line at the University ofBern with an improved extraction and combustion system. After three major steps of improvement, the extraction ofsample CO2gas now takes place inside a platinum crucible, supported by an outer quartz-glass crucible. This setupallows us to operate the line as a closed system for several samples without breaking the vacuum. Measurements ofprocedural blanks and samples from our reference strewn field, Jiddat al Harasis 073, performed in our system all showa good reproducibility and, for the strewn field samples, consistency with published data. We describe eachimprovement step in detail, discussing the advantages and disadvantages of all tested setups. By sharing ourknowledge, we aim to inform and prevent others from making the same or similar detours in establishing14Cextraction systems for extraterrestrial samples.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Space Research and Planetary Sciences
10 Strategic Research Centers > Oeschger Centre for Climate Change Research (OCCR)
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)
08 Faculty of Science > Physics Institute

UniBE Contributor:

Sliz, Malgorzata Urszula; Espic, Christophe; Leya, Ingo and Szidat, Sönke

Subjects:

500 Science > 520 Astronomy
500 Science > 530 Physics
500 Science > 540 Chemistry
600 Technology > 620 Engineering

ISSN:

0033-8222

Publisher:

Arizona Board of Regents, University of Arizona

Language:

English

Submitter:

Dora Ursula Zimmerer

Date Deposited:

12 Jun 2020 17:39

Last Modified:

15 Dec 2020 12:50

Publisher DOI:

10.1017/RDC.2020.38

BORIS DOI:

10.7892/boris.144380

URI:

https://boris.unibe.ch/id/eprint/144380

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