HIGH-TEMPERATURE VAPORIZATION AND RAOULTS-LAW STUDIES WITH AM-243 METAL

被引：22

作者：

WARD, JW ^{[1
]}

KLEINSCHMIDT, PD ^{[1
]}

HAIRE, RG ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB,OAK RIDGE,TN 37830

来源：

JOURNAL OF CHEMICAL PHYSICS | 1979年 / 71卷 / 10期

关键词：

AMERICIUM; MASS SPECTROSCOPY; VAPOR PRESSURE; VAPORIZATION HEAT; VERY HIGH TEMPERATURE;

D O I：

10.1063/1.438161

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The vapor pressure of high purity 243Am metal has been measured over the temperature range 1200–1600 K, using combined target and mass spectrometric Knudsen effusion techniques. This work was performed to extend data into the liquid phase, and to compare results with earlier 241Am experiments. Second-law and third-law heats of vaporization are in close agreement with the earlier work, and no isotope effect was found. An additional study of the vaporization of 243Am from a liquid La host was made to explore solubility relationships and activities for systems with similar electronic properties. Lanthanum was found to be a nearly ideal solvent, giving the correct heat of vaporization for Am, and activity coefficients slowly changing with temperature, representative of the effects of a small heat of mixing. © 1979, American Institute of Physics. All rights reserved.

引用

页码：3920 / 3925

页数：6

共 16 条

[1] ENERGIES OF ELECTRONIC CONFIGURATIONS OF LANTHANIDE AND ACTINIDE NEUTRAL ATOMS [J].