Emission Mossbauer Spectroscopy of ^<237>Np Probe in Uranium Compounds.
铀化合物中^ 237 Np探针的发射穆斯堡尔光谱。
基本信息
- 批准号:09650060
- 负责人:
- 金额:$ 2.11万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1997
- 资助国家:日本
- 起止时间:1997 至 1998
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This research project was started in order to investigate the physical properties of uranium compounds with strong-correlated electrons by emission ^<237>Np Mossbauer spectroscopy on the basis of new idea that parent ^<237>U nuclei as probes are introduced in U compounds through ^<238>U(gamma, n) reaction. It is also a purpose to establish the emission ^<237>Np Mossbauer spectroscopy to be general and powerful tool for material researches of actinide compounds and alloys. Therefore, the more specific purpose of this work is to develop and construct a spectrometer with sufficient ability for the emission ^<237>Np Mossbauer spectroscopy. The results are summarized as follows.1. A liquid-helium cryostat for the emission ^<237>Np Mossbauer spectroscopy was constructed. In the cryostat, a standard ^<237>NpO_2 absorber is maintained at a constant temperature of 78 K.A sample Mossbauer source put on a long stem whose temperature is controlled between 1.5 K and room temperature can be driven by a precise velocity wave form of *100 mm/sec.2. In the geometry mentioned above, the condition for precise drive of source is surveyed using a absolute velocity calibrator using a laser interferometer which is put in the system in order to observe regularly the precise velocity.3. From the view point of precise drive and velocity calibration, it was confirmed repeatedly that the whole system satisfies the ability demanded for the emission ^<237>Np Mossbauer spectroscopy through measurements of the popular ^<57>Fe Mossbauer effects and the time spectra of interference fringes. Consequently, the whole spectrometer system with sufficient ability for the emission ^<237>Np Mossbauer spectroscopy was completed by the present research project.
本研究项目是基于通过^ U(γ,n)反应将母体^ U核作为探针引入到铀化合物中的新思想,利用发射^ Np穆斯堡尔谱研究具有强关联电子的铀化合物的物理性质而启动<237><237><238>的。同时也是为了使发射<237>穆斯堡尔谱成为锕系化合物和合金材料研究的通用和强有力的工具。因此,本工作的更具体的目的是开发和构建具有足够发射^<237>Np穆斯堡尔谱能力的谱仪。研究结果如下:1.研制了一台用于发射穆斯堡尔谱的液氦低温恒温器<237>。在低温恒温器中,标准的<237>NPO_2吸收体保持在78 K的恒温下,样品穆斯堡尔源放置在温度控制在1.5 K至室温的长杆上,可以用 *100 mm/sec的精确速度波形驱动。在上述几何条件下,利用绝对速度校准器测量源的精确驱动条件,该校准器使用激光干涉仪,该激光干涉仪被放置在系统中以定期观察精确的速度.从精确驱动和速度标定的角度出发,<237>通过对常用的~ 1Fe<57>穆斯堡尔效应和干涉条纹时间谱的测量,反复验证了整个系统满足发射~ 1 Np穆斯堡尔谱的能力要求。因此,本研究项目完成了一套具有足够能力的发射~(40<237>)Np穆斯堡尔谱仪系统。
项目成果
期刊论文数量(0)
专著数量(0)
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小野寺秀也: "Magnetic properties of the single cnptalline Dy_3Ni studied by magnetization measurement and ^<161>Dy Mossbauer specttoscopy." J.Magnetism and Magnetic materials. 170. 201-210 (1997)
Hideya Onodera:“通过磁化测量和 ^<161>Dy Mossbauer 光谱研究单个 cnptalline Dy_3Ni 的磁性。”J.Magnetism and Magnetic Materials 170. 201-210 (1997)。
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- 影响因子:0
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- 通讯作者:
H.Onodera et al: "^<161>Dy and ^<155>Gd Mossbauer Spectroscopy of the RTC_2 Intermetallics (R=Dy, Gd ; T=Ni, Co)" Sci.Rep RITU. A45. 1-10 (1997)
H.Onodera 等人:“RTC_2 金属间化合物的^<161>Dy 和^<155>Gd 穆斯堡尔光谱(R=Dy、Gd;T=Ni、Co)”Sci.Rep RITU。
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小野寺秀也: "^<161>Dy and ^<155>Gd Mossbauer spectroscopy of the RTC_2 internetallics (R=Dy, Gd ; T=Ni, Co)" Sci.Rep.RITU A. 45. 1-10 (1997)
Hideya Onodera:“RTC_2互联体的^<161>Dy和^<155>Gd穆斯堡尔谱(R=Dy,Gd;T=Ni,Co)” Sci.Rep.RITU A. 45. 1-10 (1997)
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H.Onodera et al: "Magnetic Properties of the Single Crystalline Dy_3Ni Studied by Magnetization Measurement and ^<161>Dy Mossbauer Spectroscopy." J.Magn.Magn.Mater.170. 201-210 (1997)
H.Onodera 等人:“通过磁化测量和^<161>Dy Mossbauer 光谱研究单晶 Dy_3Ni 的磁性。”
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19340087 - 财政年份:2007
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$ 2.11万 - 项目类别:
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Experimental Research on Roles of Quadrupolar and Octupolar Interactions in Magnetism of Rare Earth Compounds.
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16204021 - 财政年份:2004
- 资助金额:
$ 2.11万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
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