Strontium isotope effect in liquid-liquid extraction of strontium chloride using a crown ether

被引：51

作者：

Nishizawa, K ^{[1
]}

Satoyama, T ^{[1
]}

Miki, T ^{[1
]}

Yamamoto, T ^{[1
]}

Hosoe, M ^{[1
]}

机构：

[1] NATL DEF ACAD, DEPT GEOSCI, YOKOSUKA, KANAGAWA 239, JAPAN

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 1995年 / 32卷 / 12期

关键词：

isotope effects; strontium isotopes; strontium; 87; strontium 84 isotope separation; 86; 88; crown ether; unit mass enrichment factor; odd even mass number; isotope shift; liquid-liquid extraction; solvent extraction; separation factor; strontium chlorides;

D O I：

10.3327/jnst.32.1230

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

Isotope effects in a liquid-liquid extraction of strontium with dicyclohexano-18-crown-6 (DC18C6) were investigated. Unit mass enrichment factors were observed to increase with concentrations of strontium salt in an aqueous phase. Isotope distinguishing ability of DC18C6 to strontium isotopes was calculated as an intrinsic separation factor to be K-c = 1.00051 +/- 0.00004. An odd mass number isotope, Sr-87 was recognized to behave differently from even mass number isotopes, Sr-84, Sr-86 and Sr-88. The enrichment factor induced by a nuclear property (odd or even mass number) other than the mass difference was epsilon(O/E) = -8.0 x 10(-4) which was observed with 3.2 M Sr aqueous solution. Isotope shift of energy state for 5s-orbital of strontium produces the isotope shift in vibrational energy between the strontium ion and the DC18C6.

引用

页码：1230 / 1235

页数：6

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