Retention of neptunium in uranyl alteration phases formed during spent fuel corrosion

被引：57

作者：

Buck, EC ^{[1
]}

Finch, RJ ^{[1
]}

Finn, PA ^{[1
]}

Bates, JK ^{[1
]}

机构：

[1] Argonne Natl Lab, Argonne, IL 60439 USA

来源：

SCIENTIFIC BASIS FOR NUCLEAR WASTE MANAGEMENT XXI | 1998年 / 506卷

关键词：

D O I：

10.1557/PROC-506-87

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Uranyl oxide hydrate phases are known to form during contact of oxide spent nuclear fuel with water under oxidizing conditions; however, less is known about the fate of fission and neutron capture products during this alteration. We describe, for the first time, evidence that neptunium can become incorporated into the uranyl secondary phase, dehydrated schoepite (UO3 . 0.8H(2)O). Based on the long-term durability of natural schoepite, the retention of neptunium in this alteration phase may be significant during spent fuel corrosion in an unsaturated geologic repository.

引用

页码：87 / 94

页数：8