TY - GEN
T1 - Analysis of doubly-charged negative molecules by accelerator mass spectrometry
AU - Golser, Robin
AU - Gnaser, Hubert
AU - Kutschera, Walter
AU - Priller, Alfred
AU - Steier, Peter
AU - Vockenhuber, Christof
N1 - Zeitschrift: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
DOI: 10.1016/j.nimb.2004.04.045
Coden: NIMBE
Affiliations: Vienna Environ. Research Accelerator, Inst. fur Isotopenforsch./Kernphys., Universität Wien, Währinger Straße 17, A-1090 Vienna, Austria; Fachbereich Physik, Inst. Oberflachen-/Schichtanalytik, Universität Kaiserslautern, Erwin-Schrödinger-Straße, D-67663 Kaiserslautern, Germany
Adressen: Golser, R.; Vienna Environ. Research Accelerator; Inst. fur Isotopenforsch./Kernphys.; Universität Wien; Währinger Straße 17 A-1090 Vienna, Austria; email: [email protected]
Import aus Scopus: 2-s2.0-3943071068
PY - 2004
Y1 - 2004
N2 - Free doubly-charged negative molecules are a challenge for both theory and experiment. Their stability depends on a very delicate balance between interatomic structure, electronic interaction and Coulomb repulsion. Detecting di-anions of mass M with conventional mass spectrometry always bears the risk of erroneously measuring contributions from singly charged negative ions near mass M/2, or from molecular fragments with different energy. Another possible source of errors are mass ambiguities, e.g. M(12C4) ? M( 16O3). In this contribution we show how one can overcome the methodical limits of conventional mass spectrometry by using AMS techniques for the analysis of very rare doubly-charged negative molecules. As an example, a new class of di-anions will be presented, (OCn)2-, n ? 5, which were discovered recently by secondary ion mass spectrometry, and were analyzed in detail by AMS. Π2004 Elsevier B.V. All rights reserved.
AB - Free doubly-charged negative molecules are a challenge for both theory and experiment. Their stability depends on a very delicate balance between interatomic structure, electronic interaction and Coulomb repulsion. Detecting di-anions of mass M with conventional mass spectrometry always bears the risk of erroneously measuring contributions from singly charged negative ions near mass M/2, or from molecular fragments with different energy. Another possible source of errors are mass ambiguities, e.g. M(12C4) ? M( 16O3). In this contribution we show how one can overcome the methodical limits of conventional mass spectrometry by using AMS techniques for the analysis of very rare doubly-charged negative molecules. As an example, a new class of di-anions will be presented, (OCn)2-, n ? 5, which were discovered recently by secondary ion mass spectrometry, and were analyzed in detail by AMS. Π2004 Elsevier B.V. All rights reserved.
U2 - 10.1016/j.nimb.2004.04.045
DO - 10.1016/j.nimb.2004.04.045
M3 - Contribution to proceedings
T3 - Nuclear Instruments & Methods in Physics Research. Section B. Beam Interactions with Materials and Atoms
SP - 221
EP - 226
BT - Accelerator mass spectrometry
A2 - Nakamura, T.
PB - Elsevier BV, North-Holland
CY - Amsterdam [u.a.]
ER -