International Workshop on Cold Neutron Time-of-Flight (TOF) Spectroscopy, Washington, DC, July 14-17, 2003

冷中子飞行时间 (TOF) 光谱学国际研讨会，华盛顿特区，2003 年 7 月 14-17 日

• 批准号: 0333086
• 负责人: Paul Sokol
• 金额: $ 1.67万
• 依托单位: Pennsylvania State Univ University Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-07-15 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0333086&HistoricalAwards=false
• 关键词: International; Workshop; Cold; Neutron; Time

This project is an international workshop on scientific opportunities with cold neutron time-of-flight (TOF) spectroscopy, being held on 14 - 17 July 2003 in the Washington, DC area. Cold neutron spectroscopy is the best method to use for exploring phenomena that occur on timescales of atomic vibrations or longer, typical of collective phenomena in condensed matter, polymers, quantum liquids, and other areas. The workshop will examine novel scientific opportunities as well as techniques to enhance the performance of instrumentation. An important aspect of the workshop will be to introduce younger scientists - graduate students, postdocs, and junior faculty - to this field. The workshop will endeavor to identify new types of instrumentation needed to realize the new scientific opportunities, and it will explore opportunities to apply cold neutron spectroscopy to fields in which it has not traditionally been used; for example, environmental chemistry, geology, biology, and engineering.Neutrons with low energies (called "cold" neutrons) are very useful probes of the properties of matter. Beams of such neutrons are especially responsive to structural and dynamical properties of matter on spatial and temporal scales ranging from atomic dimensions to micro-meters. These are scales characteristic of, for example, polymers, grains in metals and alloys, and living cells. Neutrons also provide unique probes of magnetic properties on similar scales. "Cold neutron time-of-flight spectroscopy" involves the study of minute energy changes in a beam of neutrons produced by interaction with a sample of matter. Such investigations enable the determination of many physical properties on the scales probed by the neutron beam. While U.S. investigators have been using such neutron-scattering studies for decades, most of the facilities needed for such investigations have been constructed in other nations. This is now beginning to change as the Spallation Neutron Source (SNS) approaches completion at Oak Ridge National Laboratory. To prepare for the beginning of SNS studies in 2006, it is necessary to begin now to educate a new generation of scientists in the use of these techniques and to help scientists from disciplines that have not traditionally used such methods to learn how they may be valuably applied in new areas. It is also necessary to explore new types of instrumentation that can enable such investigations. This project is an international workshop specifically intended to help address these needs.

该项目是一个关于冷中子飞行时间 (TOF) 光谱科学机会的国际研讨会，于 2003 年 7 月 14 日至 17 日在华盛顿特区举行。 冷中子光谱是探索原子振动时间尺度或更长时间内发生的现象的最佳方法，这是凝聚态物质、聚合物、量子液体和其他领域中典型的集体现象。 该研讨会将探讨新的科学机会以及提高仪器性能的技术。 研讨会的一个重要方面是将年轻的科学家——研究生、博士后和初级教师——引入这一领域。 研讨会将努力确定实现新科学机会所需的新型仪器，并将探索将冷中子光谱应用于传统上未使用的领域的机会；例如，环境化学、地质学、生物学和工程学。低能量中子（称为“冷”中子）是物质性质非常有用的探针。 这种中子束对从原子尺寸到微米的空间和时间尺度上的物质结构和动力学特性特别敏感。 这些是例如聚合物、金属和合金中的颗粒以及活细胞的鳞片特征。 中子还提供了类似尺度的独特磁性探针。 “冷中子飞行时间光谱”涉及研究中子束与物质样本相互作用产生的微小能量变化。 此类研究能够确定中子束探测范围内的许多物理特性。 虽然美国研究人员几十年来一直在使用此类中子散射研究，但此类研究所需的大部分设施都是在其他国家建造的。 随着橡树岭国家实验室散裂中子源（SNS）即将完成，这种情况开始发生变化。 为了为 2006 年 SNS 研究的开始做准备，有必要现在就开始教育新一代科学家如何使用这些技术，并帮助传统上没有使用这些方法的学科的科学家了解它们如何发挥价值。应用于新领域。 还需要探索能够进行此类调查的新型仪器。 该项目是一个专门旨在帮助满足这些需求的国际研讨会。