کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1829820 | 1027466 | 2008 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Thin liquid sample fabrication for neutron resonance spectroscopy Thin liquid sample fabrication for neutron resonance spectroscopy](/preview/png/1829820.png)
In neutron resonance spectroscopy, preparation of thin cylindrical samples of large diameter containing 10-4–10-510-4–10-5 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 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 17.5 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.
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 587, Issue 1, 11 March 2008, Pages 52–59