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Density measurement of molten NdCl$$_3$$-NaCl and NdCl$$_3$$-KCl system by $$gamma$$ ray attenuation

$$gamma$$線減衰法による溶融 NdCl$$_3$$-NaCl, NdCl$$_3$$-KCl系の密度測定

佐藤 忠; 岡本 芳浩  ; 小川 徹

Sato, Tadashi; Okamoto, Yoshihiro; Ogawa, Toru

$$gamma$$線減衰法により溶融状態の混合塩化物NdCl$$_3$$-NaClとNdCl$$_3$$-KClの密度を測定した。Ho-166m放射線源からの$$gamma$$線をGe-検出器を備えた$$gamma$$多重波高分析器で測定し、石英セル中の溶融混合塩化物による減衰を求めた。溶融混合塩化物の密度は$$gamma$$線の減衰率と吸収係数及び石英セルの長さから求めた。測定された密度データーはdilatometric法で測定された同じ系の密度データーと比較された。

Densities of molten chlorides mixtures of NdCl$$_3$$-NaCl and NdCl$$_3$$-KCl systems have been measured using $$gamma$$-ray attenuation method as a function of temperature. Gamma ray spectra of Ho-166m radiation source were taken before and after passing through the molten chlorides in a quartz cell by a Ge-detector coupled with muluti-channel analyzer. The density was calculated with observed attenuation factor, cross section data of photons for relevant elements and length of the cell. The measured densities of molten NdCl$$_3$$-NaCl and NdCl$$_3$$-KCl were compared with literature data by dilatometric method.

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