STTR Phase I: High Intensity, High Brightness Source of Low Energy Positrons Based on the Generation of Free Nitrogen-13

STTR 第一阶段：基于产生游离氮 13 的高强度、高亮度低能正电子源

• 批准号: 0213619
• 负责人: John Bayless
• 金额: $ 10万
• 依托单位: First Point Scientific, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2003-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0213619&HistoricalAwards=false
• 关键词: STTR; Phase; Intensity; Brightness; Source

This Small Business Technology Transfer (STTR) Phase I project will develop a novel positron source based on the generation of free 13 N produced via the 12 C(d,n) 13 N reaction. In a major advance over existing technologies, the 13 N will be extracted as nitrogen gas from a porous carbon target, fed to a remote location, and condensed onto a small diameter spot. A layer of solid Ne will moderate the 13 N beta-particles to produce a beam of slow positrons. This approach will yield an unrivaled brightness and two orders of magnitude higher intensity than current 22 Na sources, thus opening the door to many valuable uses of positron probes for science and industry.The high intensity, high brightness positron source to be developed will have many applications to high-data-rate, positron micro-beam instruments for use in determining such things as: (1) the effects of radiation damage due to ion implantation on the conduction characteristics of IC semiconductors; (2) the effects of electro-migration on the failure of current carrying leads in ICs; (3) the properties of low-k dielectrics used in high speed ICs; and (4) the aging of the mechanical properties of plastic films.

这个小型企业技术转移（STTR）第一阶段项目将开发一种新的正电子源，该正电子源基于通过12c (d， N) 13n反应产生的自由13n。在现有技术的重大进步中，13n将作为氮气从多孔碳靶中提取出来，输送到偏远地区，并浓缩到一个小直径的点上。一层固体Ne将缓和13个N -粒子，从而产生一束缓慢的正电子。这种方法将产生无与伦比的亮度和比目前的22na源高两个数量级的强度，从而为科学和工业上的许多有价值的正电子探针用途打开大门。待开发的高强度、高亮度正电子源将在高数据速率、正电子微束仪器中有许多应用，用于测定以下方面：(1)离子注入引起的辐射损伤对集成电路半导体传导特性的影响；(2)电迁移对集成电路中载流引线失效的影响；(3)用于高速集成电路的低k介电材料的性能；(4)塑料薄膜力学性能的老化。