5 Years of Ion-Laser Interaction Mass Spectrometry - Status and Prospects of Isobar Suppression in AMS by Lasers

Martin Martschini (Korresp. Autor*in), Johannes Lachner, Karin Hain, Michael Kern, Oscar Marchhart, Johanna Pitters, Alfred Priller, Peter Steier, Andreas Wiederin, Alexander Wieser, Robin Golser

Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed


A setup for ion-laser interaction was coupled to the state-of-the-art AMS facility VERA five years ago and its potential and applicability as a new means of isobar suppression in accelerator mass spectrometry (AMS) has since been explored. Laser photodetachment and molecular dissociation processes of anions provide unprecedented isobar suppression factors of >10(10) for several established AMS isotopes like Cl-36 or Al-26 and give access to new AMS isotopes like Sr-90, Cs-135 or Hf-182 at a 3-MV-tandem facility. Furthermore, Ion-Laser InterAction Mass Spectrometry has been proven to meet AMS requirements regarding reliability and robustness with a typical reproducibility of results of 3%. The benefits of the technique are in principle available to any AMS machine, irrespective of attainable ion beam energy. Since isobar suppression via this technique is so efficient, there often is no need for any additional element separation in the detection setup and selected nuclides may even become accessible without accelerator at all.

Seiten (von - bis)555-568
Frühes Online-Datum14 Sep. 2021
PublikationsstatusVeröffentlicht - Juni 2022

ÖFOS 2012

  • 103013 Ionenphysik
  • 103037 Umweltphysik