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|Title:||Thin Liquid Sample Fabrication for Neutron Resonance Spectroscopy|
|Authors:||NOGUERE G.; BRUSEGAN Antonio; LEPRETRE A.; LOMBARD THIERRY; LUPO J.|
|Citation:||NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SP vol. 587 no. 1 p. 52-59|
|Publisher:||ELSEVIER SCIENCE BV|
|Type:||Articles in Journals|
|Abstract:||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.|
|JRC Institute:||Institute for Reference Materials and Measurements|
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