Wagemans, C.
Wagemans, J.
Goeminne, G.
Loiselet, Marc
[UCL]
Gaelens, M.
Suitable O-17 samples are required for the study of the O-17(n,alpha)C-14 reaction with various detectors, The electrospraying of metal oxides enriched in O-17 onto an Al substrate yielded negative results: no O-17(n(th),alpha) reactions were observed when irradiating these samples with thermal neutrons, These tests demonstrated the need to minimize the B-10 content in sample and backing, since the B-10(n(th),alpha(1)) reaction causes a strongly disturbing background. Good results were obtained in the reactor experiments using gaseous samples (O-17 enrichments of 58.2%, 72.1% and 85.5%) with a dedicated experimental setup. The experimental conditions being quite different at accelerators, an alternative method was developed to prepare samples suited for use in ionization chambers, For this purpose, O-17 ions were implanted in ultra-pure Al foils. The thickest sample prepared in this way contains 8 x 10(18) atoms of O-17, with a B-10/O-17 ratio of 10(-4). (C) 2001 Elsevier Science B.V. All rights reserved.
Bibliographic reference |
Wagemans, C. ; Wagemans, J. ; Goeminne, G. ; Loiselet, Marc ; Gaelens, M.. Preparation of highly enriched O-17 samples for neutron-induced reaction studies.20th World Conferenceof the International-Nuclear-Target-Development-Society (INTDS) (ANTWERP(Belgium), Oct 02-06, 2000). In: Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, Vol. 480, no. 1, p. 229-232 (2002) |
Permanent URL |
http://hdl.handle.net/2078.1/61790 |