Exotic negative molecules in AMS

Autor(en)

Robin Golser, Hubert Gnaser, Walter Kutschera, Alfred Priller, Peter Steier, Anton Wallner

Abstrakt

"The techniques and equipment developed for AMS studies are well suited for identifying exotic negative ions". With this sentence begins a pioneering paper by Roy Middleton and Jeff Klein (M&K) on small doubly-charged negative carbon clusters [Nucl. Instr. and Meth. B 123 (1997) 532]. M&K were the first to utilize Accelerator Mass Spectrometry to prove the existence of these clusters and a number of other exotic molecules. We review M&K's efforts and show how their work is being continued at other laboratories. The latest developments are: (1) the discovery of long-lived molecular hydrogen anions H2-, D2- and (2) the unambiguous identification of the smallest doubly-charged negative molecule (LiF3)2-. In particular we show new experimental data for D3-, and for (LiF3)2-, and we try to answer the question why M&K's search for this di-anion was unsuccessful. © 2007 Elsevier B.V. All rights reserved.

Organisation(en)

Isotopenphysik

Externe Organisation(en)

Technische Universität Kaiserslautern

Journal

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

Band

259

Seiten

71-75

Anzahl der Seiten

5

ISSN

0168-583X

DOI

https://doi.org/10.1016/j.nimb.2007.01.174

Publikationsdatum

2007

Peer-reviewed

Ja

ÖFOS 2012

103005 Atomphysik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/fd21e299-bad5-45d3-8b52-e3b953dee595