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Establishing a spike material for the analysis of 237Np

FWF international joint project

Project period:

  •  August 2020 - August 2023

Abstract:

The aim of the project is the production, preparation and characterization of an isotopic spike material for the normalization of neptunium-237 (another long-lived neptunium isotope with high purity with respect to neptunium-237) which will allow us to quantitatively determine neptunium-237 in the environment. Due to analytical difficulties, the distribution of this nuclide is not yet sufficiently known. However, a few measurements using large sample volumes suggest a relevant release from the European reprocessing plants.

 

 

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Study of the global distribution of the long-lived radionuclide Tc-99 with innovative detection techniques

Project partners:

Project period:

  •  October 2018 - October 2021

Abstract:

Considerable amounts of the long-lived fission product 99Tc (T1/2 = 2.1·105 a) have been released into the environment by reprocessing plants and nuclear weapon tests. In addition, 99Tc is constantly produced by the decay of the short-lived 99mTc (T1/2 = 6.0 h), the most widely used medical tracer in cancer diagnostics. In this project the distribution of global fallout 99Tc in different physio-chemical environments is studied for the first time to derive the migration pathways of this radionuclide and to establish a general baseline for the 99Tc concentration in the environment due to weapons testings. The project addresses the following questions:

  • What is the present environmental level of 99Tc due to global fallout?
  • Does the chemical behaviour of 99Tc depend on the physio-chemical form in which it was emitted into the environment?
  • How does the chemical behaviour of 99Tc depend on the surrounding chemical conditions (e.g. pH, redox potential)?
  • Can the reproducibility of the measurement results be improved by using a 97Tc (T1/2=2.6·106 a) spike?
  • Can we achieve a sufficient isobar suppression using laser photodetachment to enable the detection of environmental levels of 99Tc by mid/low-energy AMS like VERA?

 

 

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Research And Development with Ion Beams – Advancing Technology in Europe

  • Partners: 18
  • Time horizon: 1/2019 – 12/2022
  • Budget: 9.9 million EUR
  • Transnational accessible beamtime: ~ 15.800 h
  • Cooperating facilities: 11
  • www.ionbeamcenters.eu

14 public research facilities as well as 4 SMEs cooperate through the RADIATE project for mutual exchange of experience and best practice examples for structuring the European research landscape for ion beam technology and its applications.

In addition to the advancement of ion beam technologies and the strengthening of the cooperation between the individual ion beam facilities, RADIATE aims to provide participants from research and industry with an easy, flexible, efficient and above all free access to the existing ion beam infrastructure. The total transnationally available beam time is 15 800 h (thereof 1500 h at VERA).