Highly sensitive AMS measurements of Mn-53

Autor(en)

Michail Poutivtsev, Iris Dillmann, Thomas Faestermann, Klaus Knie, Gunther Korschinek, Johannes Lachner, Astrid Meier, Georg Rugel, Anton Wallner

Abstrakt

Our AMS system, with the gas-filled detector system GAMS, has been optimized for measurements with Mn-53. A high sensitivity has been achieved. A newly installed cesium sputter ion source yields an improved emittance, and thus a higher mass resolution. By the extraction of the manganese molecule MnF- instead of MnO- we can suppress the isobaric chromium background in the ion source by more than a factor of three. The GAMS system achieves an isobaric suppression factor of about 3 x 10(8). Measurements on blank samples yielded upper limits for the Mn-53/Mn-55 ratios of 7 x 10(-15).

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Technische Universität München

Journal

Nuclear Instruments & Methods in Physics Research. Section B. Beam Interactions with Materials and Atoms

Band

268

Seiten

756-758

Anzahl der Seiten

3

ISSN

0168-583X

DOI

https://doi.org/10.1016/j.nimb.2009.10.023

Publikationsdatum

04-2010

Peer-reviewed

Ja

ÖFOS 2012

1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1be5bcd7-075f-427d-b25e-2646b1c4c320