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Exploratory Studies of Optical Response to Gamma and Neutron Radiation of Doped and Undoped II-VI, III-V, and Novel Scintillating Core/Shell Nanocrystals [UNM_FY06_025]

掺杂和未掺杂 II-VI、III-V 和新型闪烁核/壳纳米晶体对伽马和中子辐射的光学响应的探索性研究 [UNM_FY06_025]

基本信息

批准号：
0610201
负责人：
Marek Osinski
金额：
$ 23.38万
依托单位：
University of New Mexico
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2006
资助国家：
美国
起止时间：
2006-07-01 至 2011-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0610201&HistoricalAwards=false
关键词：
Exploratory Studies Optical Response Gamma

项目摘要

Scintillators are usually consist of a transparent insulator and an impurity that functions as a luminescence center. They are often slow or how low efficiency. Colloidal nano-crystals in liquids, sol-gel and organic polymers will be developed. The nano-crystal surface will be modified to make them soluble. The optical response will be investigated and results compared across systems. The work will provide the first studies of the optical response of colloidal nano-crystals to irradiation. It is anticipated that this effort will lead to identification of high-efficiency, fast scintillators utilizing 3D confinement of electrons and holes in nano-crystals. It will provide a systematic database of gamma ray and neutron response and characterization of nano-crystals. The work will contribute to the investigation of basic radiation effects on nano-crystals and their utilization in handheld, efficient detectors of nuclear radiation. The work should have a major impact on the development of scintillating materials and expand the range to nano-crystals. The groups actively engages undergraduate students in the research through a specialized program focused on recruitment, mentoring, retention and graduation of members of underrepresented groups.

闪烁体通常由透明绝缘体和作为发光中心的杂质组成。他们往往速度慢或效率低。将开发在液体、溶胶-凝胶和有机聚合物中的胶体纳米晶体。纳米晶体表面将被改性以使它们可溶。将研究光学响应，并在系统之间比较结果。这项工作将提供胶体纳米晶体对辐射的光学响应的第一个研究。预计这一努力将导致利用纳米晶体中的电子和空穴的3D限制来识别高效率、快速的双折射器。它将提供伽马射线和中子响应以及纳米晶体特性的系统数据库。这项工作将有助于研究纳米晶体的基本辐射效应及其在手持式高效核辐射探测器中的应用。这项工作将对纳米材料的发展产生重大影响，并将范围扩大到纳米晶体。这些团体通过一个专门的项目积极吸引本科生参与研究，该项目侧重于招募、指导、保留和毕业代表性不足的群体的成员。