U.S.-Japan Cooperative Science: High Precision Spectroscopy of Lambda-Hypernuclei

美日合作科学：λ超核高精度光谱学

• 批准号: 0138152
• 负责人: Joerg Reinhold
• 金额: $ 5.12万
• 依托单位: Florida International University
• 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: 2002-04-15 至 2006-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0138152&HistoricalAwards=false
• 关键词: U.S.; Japan; Cooperative; Science; Precision

0138152ReinholdThis award supports a three-year collaborative research project between Professor Joerg Reinhold at the Florida International University in Miami, Florida and Professor Satoshi Nakamura of Tohoku University in Sendai, Japan. The researchers will undertake a study of the high precision spectroscopy of lambda-hpernuclei. They will be looking at hypernuclear excitations in medium heavy nuclei. A hypernucleus contains a hyperon implanted as an "impurity" within the nuclear medium. This introduces a new quantum number, strangeness, into the nucleus, and if the hyperon maintains its identity it will not experience Pauli-blocking, easily interacting with deeply bound nucleons. In this sense, it has been proposed that the hyperon is a good probe of the interior of a nucleus, where information is difficult to obtain. The researchers will extract the characteristics of a hyperon embedded in a nucleus by observing the spectroscopy of its states. The project brings together the efforts of two laboratories that have complementary expertise and research capabilities. The U.S. researchers will have available a new magnetic spectrometer for kaon detection which will significantly enhance the capabilities of their Jefferson Laboratory's hypernuclear spectrometer system. For the foreseeable future, this instrument will be without competition and will considerably advance the field of hypernuclear spectroscopy. The Japanese researchers contribute a significant expertise in hypernuclear spectroscopy, on the experimental as well as the theoretical level. They are currently building a new facility, the Japanese Hadron Facility, which will be operational for this research project and will contribute to the next generation hypernuclear experiments. The research will offer a good opportunity to join efforts between the two countries. Through the exchange of ideas and technology, this project will broaden our base of basic knowledge and promote international understanding and cooperation. Florida International University's student body is largely Hispanic and a number of their graduate and undergraduate students will be participating in the research. A publication committee has been formed that will oversee and coordinate the publication of the research results and presentations at conferences.

0138152 Reinhold该奖项支持佛罗里达迈阿密的佛罗里达国际大学的Joerg Reinhold教授和日本仙台东北大学的Satoshi中村教授之间为期三年的合作研究项目。 研究人员将进行一项高精度的超核光谱学研究。 他们将研究中重核中的超核激发。 一个超核包含一个作为“杂质”注入核介质的超子。 这就给原子核引入了一个新的量子数--奇异数，如果超子保持它的同一性，它就不会经历保利阻塞，很容易与深度束缚的核子相互作用。 在这个意义上，超子被认为是探测原子核内部的一个很好的工具，因为在那里信息是很难获得的。 研究人员将通过观察其状态的光谱来提取嵌入核中的超子的特征。 该项目汇集了两个具有互补专业知识和研究能力的实验室的努力。 美国研究人员将拥有一种新的用于K介子探测的磁谱仪，这将大大提高杰斐逊实验室超核谱仪系统的能力。 在可预见的未来，这种仪器将是没有竞争力的，并将大大推进超核光谱学领域。 日本研究人员在实验和理论层面上为超核光谱学提供了重要的专业知识。 他们目前正在建造一个新的设施，即日本强子设施，该设施将用于这一研究项目，并将有助于下一代超核实验。 这项研究将为两国共同努力提供一个很好的机会。 通过交流思想和技术，该项目将扩大我们的基础知识，促进国际理解与合作。 佛罗里达国际大学的学生主要是西班牙裔，他们的一些研究生和本科生将参加这项研究。 已经成立了一个出版委员会，负责监督和协调研究结果的出版和在会议上的发言。