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Abstract

In neutron resonance spectroscopy, preparation of thin cylindrical samples of large diameter containing 10{-4}-10{-5} atoms per barn of raw materials in powder form make pressing a uniform thickness sample difficult. The use of liquid samples is a suitable alternative to overcome the technical limits inherent to the fabrication of pressed solid samples by compaction methods. This paper presents the fabrication of a 2 mm thick cylindrical sample, with a inner diameter of 65 mm, filled with an aqueous solution of lithium iodide. The sample was designed to measure the low neutron energy range of the {127}I total cross-section by means of the neutron resonance transmission technique. The resonance shape analysis provided results consistent with those obtained by measuring a 17.5 mm thick lead iodine sample under the same experimental conditions as for LiI sample. Such liquid sample could be used to repeat similar measurements on a large variety of stable isotopes and low radioactive materials.

Additional information

Authors: NOGUERE G, Département de Recherches sur la Fusion Contrôlée, Association Euratom-CEA sur la Fusion, CEA Cadarache, Saint-Paul-lez-Durance (FR);BRUSEGAN A, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);LOMBARD T, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);LUPO J, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Geel (BE);LEPRETRE A, CEA Saclay, Gif sur Yvette (FR)
Bibliographic Reference: An article published in: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 587, Issue 1 (2008), 8 pp.
Availability: This article can be accessed online by subscribers, and can be ordered online by non-subscribers, at: http://dx.doi.org/doi:10.1016/j.nima.2007.12.022
Record Number: 200819856 / Last updated on: 2008-06-24
Category: PUBLICATION
Original language: en
Available languages: en
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