US-New Zealand Cooperative Research into the Development andApplication of a New Method for Separation of Uranium-SeriesIsotopes

提案目标和与计划目标的相关性：美国 调查人员将与研究所的威廉·詹姆斯·麦凯布合作 核科学位于下赫特，新西兰，在一段时间内， 两年 该项目旨在开发和应用一种 分离同位素的新方法。 放射化学小组在 新西兰核科学研究所开发了一种新工艺 用于铀、钍和原锕的化学分离， 地质样品 该方法基于温控离子 交换技术和旋转圆盘电沉积，提供了 这些元素的定量回收。 本项目谋求 通过包括同时分离钋， 镭铅和其他元素 除了进一步加强 这项新技术，几个应用到正在进行的研究项目 这两个机构都计划。 这些项目包括研究 佛罗里达西南部地下水的放射性化学污染， 新西兰更新世阶地的年代测定 的组合 美国和新西兰科学家的技术和专业知识有助于 实现促进相互研究的计划的目标 对两国都有利。 优点：使用新西兰首创的技术， 美国调查人员的进一步发展， 持续受益的潜力。 这项技术的引入 进入美国将提供一个机会， 海洋科学中常见的小、低产量样本的技术。 的 该项目已被海洋地质和地球物理推荐 计划的资金具有高度优先地位，并将与 新西兰合作社执行代理人的同意 程序. 与其他项目和资金的关系：此处提出的研究 代表着国际合作努力的增加， 海洋地质学目前正在国内支持的研究 计划（OCE 85 - 20724）和佛罗里达环境部 调控 没有重复的资金，因为这个奖项提供 只为国外旅行、通信和航运提供支持 样品

Proposal Objectives and Relevance to Program Objectives: The U.S. investigators will work with William James McCabe from the Institute of Nuclear Sciences located at Lower Hutt, New Zealand, over a period of two years. The project is aimed at the development and application of a new method for the separation of isotopes. The radio chemistry group at New Zealand's Institute of Nuclear Sciences has developed a new process for the chemical separation of uranium, thorium, and protoactinium from geologic samples. The method, based on temperature-controlled ion exchange techniques and rotating disc electrodeposition, provides quantitative recoveries of these elements. This project seeks to improve the method by including simultaneous separation of polonium, radium, lead, and other elements. In addition to further enhancement of this new technique, several applications to on-going research projects at both institutions are planned. These projects include a study of radiochemical contamination of ground water in southwest Florida and dating of Pleistocene terraces in New Zealand. The combination of techniques and of expertise of the U.S. and New Zealand scientists helps fulfill the objective of the Program of promoting research of mutual benefit to both countries. Merit: The use of the technique pioneered in New Zealand with the further development by the U.S. investigators holds considerable potential for continued benefits. The introduction of this technology into the U.S. will provide an opportunity to expand the available dating techniques for small, low-yield samples common in ocean sciences. The project has been recommended by the Marine Geology and Geophysics Program for funding with high priority, and will take place with the concurrence of the New Zealand executive agent for the cooperative program. Relation to Other Projects and Funding: The research proposed here represents the addition of an international collaborative effort to research currently being supported domestically by the Marine Geology Program (OCE 85-20724) and by the Florida Department of Environmental Regulation. There is no duplication of funding, as this award provides only foreign travel, communication and support for the shipping of samples.