Trace analysis of 55Fe in biosphere and technology by means of AMS

G. Korschinek, D. Müller, T. Faestermann, A. Gillitzer, E. Nolte, M. Paul

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Iron is a very important element in the biosphere and in material technology. Labeling and tracing methods in connection with the sensitive AMS method offer therefore a wide field of applications for 55Fe. We have used a TOF system with channel plate detectors and a Bragg ionization chamber which yields Z and E information. In conjunction with a Wien filter behind the tandem, a significant reduction of neighbouring Fe isotopes was achieved resulting in a sensitivity of about 8 × 10-13 for 55Fe/Fe in a first measurement, corresponding to an activity of about 0.1 Bq in a 10 mg sputter target. The stable isobar 55Mn did not contribute as we could not observe Mn- in our system.

Original languageEnglish
Pages (from-to)498-501
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Issue number3-4
StatePublished - 2 Dec 1990


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