| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 10675824 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2005 | 8 Pages |
Abstract
A new time-of-flight set-up for accelerator mass spectrometry with 129I was installed at the Maier-Leibnitz laboratory in Garching (Germany). The detector system consists of a TOF-system and an ionization chamber. A TOF resolution of 440Â ps is obtained, the energy resolution is about 2%. The sensitivity of the complete system is 10â14 for the ratio of 129I/127I. The measurements of rain water samples from the time period between July 2003 and October 2004 showed a decrease of 129I concentration, of 129I deposition flux and of 129I/127I isotopic ratio compared to previous measurements of rain water in Southern Germany from 1988, 1989 and 1995. This decrease can be explained by a substantial drop in gaseous 129I emissions from the French reprocessing facilities.
Keywords
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Surfaces, Coatings and Films
Authors
H. Reithmeier, V. Lazarev, F. Kubo, W. Rühm, E. Nolte,