Trapped Atoms in Solid Hydrogen Isotopes
Trapped Atoms in Solid Hydrogen Isotopes
批准号:
8716520
负责人:
James Gaines
金额:
$25.27万
依托单位:
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
项目状态:
已结题
起止时间:
1987-12-01 至 1991-05-31
中文摘要
盖恩斯教授将对氢进行广泛的研究 固体和液体中的同位素。 特别是 研究人员将确定正氢浓度作为 时间的函数来推断嵌入原子的动力学 分子固体宿主。 这项研究将演变成一项研究, 自旋扩散 原子作为强大的弛豫中心, 核极化将通过自旋扩散到达它们。 这些核磁共振(NMR)研究还将获得 线形信息。 将构建EPR仪器, 可以直接测量原子密度随时间的变化 因此研究低温化学 在良好表征的固体宿主中的反应。 发射和 吸收光谱将采取,一个新的仪器将 在夏威夷大学获得。
英文摘要
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.
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Connecting the Islands: Cyber Connectivity for Science and Technology in Hawaii
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批准号:1007033
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项目类别:Standard Grant
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资助金额:$117.65万
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财政年份:2010
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负责人:James Gaines
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依托单位:
IMUA 2: NSF Hawaii EPSCoR
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批准号:0554657
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项目类别:Continuing Grant
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资助金额:$0.0万
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财政年份:2006
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负责人:James Gaines
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依托单位:
Investing in Multidisciplinary University Activities through Hawaii EPSCoR
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批准号:0237065
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项目类别:Continuing Grant
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资助金额:$899.55万
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财政年份:2003
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负责人:James Gaines
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依托单位:
Materials Research Laboratory (Materials Research)
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批准号:8418159
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1985
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负责人:James Gaines
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依托单位:
Relaxation and Magnetic Ordering in Highly Polarized Spin Systems (Materials Research)
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批准号:8405403
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1984
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负责人:James Gaines
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依托单位:
Acquisition of a Helium Liquefier-Recovery System
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批准号:8109493
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:1981
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负责人:James Gaines
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依托单位:
A Resonance Study of Molecular and Atomic Excitations in TheSolid Hydrogens
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批准号:8106166
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1981
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负责人:James Gaines
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依托单位:
Phase Transition in Solid Hydrogen Alloys and Other Disordered Systems
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批准号:7807527
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1978
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负责人:James Gaines
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依托单位:
Crystalline Field Ordering Quantum Diffusion and Heat Pulse Propagation in Solid Hydrogen
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批准号:7611427
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项目类别:Continuing grant
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资助金额:$0.0万
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财政年份:1976
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负责人:James Gaines
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依托单位:
A Study of Relaxation, Diffusion, and Polarization in Hydrogen and Helium
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批准号:7515584
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:1975
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负责人:James Gaines
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依托单位:
海外基金