Microwave synthesizer for low temperature, broadband spectroscopy

用于低温、宽带光谱的微波合成器

• 批准号: 374916-2009
• 负责人: Bonn, Douglas
• 金额: $ 7.94万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=412041
• 关键词: Microwave; synthesizer; low; temperature; broadband

A microwave synthesizer is required for the development and exploitation of a broadband microwave spectrometer. This technique allows one to cool a sample to as low as a few hundredths of a degree above absolute zero, and then to measure the sample's microwave power absorption over a wide range of different microwave frequencies. This spectrometer will be the first of its kind in the world, and the research tools grant will provide the source of microwave power needed for the measurements. One topic that will be studied is the behaviour of high temperature superconductors at low temperatures, where we will be able to uncover how the microwave power losses in a superconductor are influenced by defects and impurities. More generally, the instrument will allow us to investigate new states of matter appearing in metals below 1 degree above absolute zero.

宽带微波谱仪的研制和开发需要微波合成器。这种技术允许将样品冷却到比绝对零度高百分之几度，然后测量样品在宽范围的不同微波频率上的微波功率吸收。该光谱仪将是世界上第一台此类光谱仪，研究工具赠款将提供测量所需的微波功率源。将研究的一个主题是高温超导体在低温下的行为，在那里我们将能够揭示超导体中的微波功率损耗如何受到缺陷和杂质的影响。更一般地说，该仪器将使我们能够研究出现在绝对零度以上1度以下的金属中的新物质状态。