Thin Liquid Sample Fabrication for Neutron Resonance Spectroscopy
In neutron resonance spectroscopy, preparation of thin cylindrical samples of large diameter containing 10_4210_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 2mm 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 127I total cross-section by means of the neutron resonance transmission technique. The resonance shape analysis provided results consistent with those obtained by measuring a 17.5mm 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.
NOGUERE G.;
BRUSEGAN Antonio;
LEPRETRE A.;
LOMBARD Thierry;
LUPO J.;
2008-06-20
ELSEVIER SCIENCE BV
JRC44457
0168-9002,
www.sciencedirect.com,
https://publications.jrc.ec.europa.eu/repository/handle/JRC44457,
10.1016/j.nima.2007.12.022,
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