Trapped Atoms in Solid Hydrogen Isotopes

固体氢同位素中的俘获原子

• 批准号: 8716520
• 负责人: James Gaines
• 金额: $ 25.27万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-01 至 1991-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8716520&HistoricalAwards=false
• 关键词: Trapped; Atoms; Solid; Hydrogen; Isotopes

Professor Gaines will carry out a broad study of hydrogen isotopes in solid and liquid phases. Specifically the investigator will determine the ortho-hydrogen concentration as a function of time to infer the dynamics of atoms embedded in the molecular solid host. This research will evolve into a study of spin diffusion. The atoms act as powerful relaxation centers but the nuclear polarization will reach them via the spin diffusion. These nuclear magnetic resonance (NMR) studies will also obtain lineshape information. An EPR instrument will be constructed and will yield a direct measure of atom density as a function of time and temperature and thus study low temperature chemical reactions in a well characterized solid host. Emission and absorption spectra will be taken, a new instrument will be obtained at the University of Hawaii.

盖恩斯教授将对固态和液态氢同位素进行广泛研究。具体地说，研究人员将确定邻氢浓度作为时间的函数，以推断嵌入分子固体主体中的原子的动力学。这项研究将演变为对自旋扩散的研究。原子充当强大的弛豫中心，但核极化将通过自旋扩散到达它们。这些核磁共振研究也将获得线型信息。将建造一台EPR仪器，它将产生作为时间和温度函数的原子密度的直接测量，从而研究具有良好特性的固体宿主中的低温化学反应。将采集发射光谱和吸收光谱，夏威夷大学将获得一台新仪器。