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5 results on '"Etienne Vermeulen"'

1. Production of zirconium-88 via proton irradiation of metallic yttrium and preparation of target for neutron transmission measurements at DICER

Author

Artem V. Matyskin, Athanasios Stamatopoulos, Ellen M. O’Brien, Brad J. DiGiovine, Veronika Mocko, Michael E. Fassbender, C. Etienne Vermeulen, and Paul E. Koehler

Subjects
Medicine, Science
Abstract

Abstract A process for the production of tens to hundreds of GBq amounts of zirconium-88 (88Zr) using proton beams on yttrium was developed. For this purpose, yttrium metal targets (≈20 g) were irradiated in a ~16 to 34 MeV proton beam at a beam current of 100–200 µA at the Los Alamos Isotope Production Facility (IPF). The 88Zr radionuclide was produced and separated from the yttrium targets using hydroxamate resin with an elution yield of 94(5)% (1σ). Liquid DCl solution in D2O was selected as a suitable 88Zr sample matrix due to the high neutron transmission of deuterium compared to hydrogen and an even distribution of 88Zr in the sample matrix. The separated 88Zr was dissolved in DCl and 8 µL of the obtained solution was transferred to a tungsten sample can with a 1.2 mm diameter hole using a syringe and automated filling station inside a hot cell. Neutron transmission of the obtained 88Zr sample was measured at the Device for Indirect Capture Experiments on Radionuclides (DICER).

Published
2023
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2. Measurement of the 43Sc production cross-section with a deuteron beam

Author

Tommaso Stefano Carzaniga, Nicholas P. van der Meulen, Saverio Braccini, Christof Vockenhuber, Etienne Vermeulen, Peter Peier, Andreas Türler, Roger Hasler, and Christian Kottler

Subjects
Radiation, Materials science, Proton, Ion beam, Branching fraction, Cyclotron, 010403 inorganic & nuclear chemistry, 01 natural sciences, 030218 nuclear medicine & medical imaging, 0104 chemical sciences, 3. Good health, law.invention, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, Deuterium, law, Yield (chemistry), Beam (structure), Common emitter
Abstract

43,44Sc/47Sc is one of the most promising theranostic pairs in nuclear medicine. The co-emission of 1157 keV γ -rays with 99.9% branching ratio by 44Sc and the presence of its metastable state 44 mSc push to favour the adoption of 43Sc for Positron Emission Tomography (PET) diagnostic procedures to lighten the dose to the patient and to the personnel. The β + emitter 43Sc can be produced at a medical cyclotron by proton bombardment of an enriched 43Ca or 46Ti oxide target. 43Sc can be also produced by deuteron bombardment of an enriched 42Ca oxide target. Only a few medical cyclotrons currently in operation offer deuteron beams. Some can be adapted to operate both a proton or a deuteron source. To compare these three production routes, an accurate knowledge of the cross-sections is essential. In this paper, we report on the cross-section measurement of the reaction 42Ca(d,n)43Sc performed at the 6 MV HVEC EN-Tandem of the Ion Beam Physics group at ETH in Zurich. A study of the production yield by using commercially available enriched target materials is also presented.

Published
2019
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3. Proceedings of the Workshop for Applied Nuclear Data: WANDA2020

Author

Gregory Severin, Matthew Devlin, T S Bailey, Michael Grosskopf, Friederike Bostelmann, Fredrik Tovesson, Michael Scott Smith, Kyle Wendt, David Brown, Etienne Vermeulen, Vladimir Sobes, Alejandro Sonzogni, A. Ratkiewicz, Brian J. Quiter, Patrick Talou, Bethany L. Goldblum, Jeremy Lloyd Conlin, Catherine E. Romano, Bruce Pierson, Yaron Danon, Ellen M. O'Brien, Denise Neudecker, M.L. Zerkle, L. A. Bernstein, and Robert Casperson

Subjects
Systems engineering, Environmental science, Nuclear data
Published
2020
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4. Measurement of the

Author

Tommaso Stefano, Carzaniga, Nicholas P, van der Meulen, Roger, Hasler, Christian, Kottler, Peter, Peier, Andreas, Türler, Etienne, Vermeulen, Christof, Vockenhuber, and Saverio, Braccini

Subjects
Radioisotopes, Calcium Radioisotopes, Isotope Labeling, Positron-Emission Tomography, Humans, Cyclotrons, Protons, Radiopharmaceuticals, Deuterium, Scandium, Theranostic Nanomedicine
Published
2018

5. Nee valt niet te verkopen

Author

Rob Arnoldus, Etienne Vermeulen, Rob Arnoldus, and Etienne Vermeulen

Abstract

Klanttaal in zorg, welzijn en onderwijs

Published
2011

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