Novel X-ray interferometer with a normal incidence and its applications

新型法向入射X射线干涉仪及其应用

• 批准号: 08455042
• 负责人: KIKUTA Seishi
• 金额: $ 4.74万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08455042/
• 关键词: X-ray interferometer; X-ray optics; normal incidence; longitudianl coherence length; nuclear resonant scattreing; dynamical thery of reflection; quartz

In this research we aimed to design and making of a novel X-ray interferometer with different optical path lengths combined with a nuclear resonantly filtered X-ray which has a longitudinal coherence length. It composed of a set of two crystal plates arranged face to face in which the diffraction condition with a Bragg angle near pi/2 is satisfied. Multiple reflection is occurred between two plates and leads to the interference. The nuclear resonant scattering by the ^<57>Fe nuclei is a desirable candidate and its transition energy is 14.4 keV.So the nuclear filtered 14.4 keV X-ray should satisfy the normal incidence condition and we have found that 0 6 10 reflection by the quarts crystal is best for this purpose.We performed the fundamental experiments to realize this novel interferometer using the synchrotron radiation. The reflectivity and transivity of quartz 0 6 10 at the normal incidence condition was investigated. The lattice parameter of quartz (0 6 10) was precisely determined by the new normal incidence method and we found that the Bragg reflection just at pi/2 of the nuclear filtered 14.4 keV X-ray will be realized at 95ﾟC.The perfection of quartz crystal was evaluated by the parallel setting of Si (12 4 0) and quartz (0 6 10). The profile of the rocking curve and the topography told us that its perfection was desirable. We made Bonse-Hart type interferometer of the quartz but the clear interference was not observed. Improvement of the cutting process may enables the interference. Finally we proposed the new method which determine the phase of the crystal factor using this X-ray interferometer and is quite defferent from other methods from the view point of X-ray optics.

本研究旨在设计和制作一种具有不同光路长度的新型X射线干涉仪，并结合具有纵向相干长度的核共振过滤X射线。它由一组两个面对面排列的晶体板组成，其中满足布拉格角接近π/2的衍射条件。两块平板之间发生多次反射，导致干涉。Fe原子核的共振散射<57>是一个理想的选择，其跃迁能量为14.4keV，因此14.4keV的核滤波X射线必须满足正入射条件，我们发现石英晶体的0.610反射是最好的选择。研究了0.610石英在正入射条件下的反射率和透射率。用新的正入射法精确测定了石英晶体的晶格常数（0 6 10），发现在95 ℃时，经核过滤的14 4keV X射线在π/2处可实现布拉格反射。用Si（12 4 0）和石英（0 6 10）平行放置的方法评价了石英晶体的完整性。摇摆曲线的轮廓和地形告诉我们，它的完美是可取的。我们制作了石英的Bonse-Hart型干涉仪，但没有观察到明显的干涉。切削工艺的改进可能会使干涉成为可能。最后，从X射线光学的角度，提出了用该干涉仪测定晶体因子相位的新方法，这与其它方法有很大的不同。

项目成果

T.Mitsui: "Mossbauer Time Spectra of the Nuclear Forward Scattering form Coherently Vibrating Resonant Nuclei" Jpn.J.Appl.Phys. (1997)

T.Mitsui：“相干振动共振核的核前向散射的穆斯堡尔时间谱”Jpn.J.Appl.Phys。

Y.Yoda, T.Suzuki, X.W.Zhang, K.Hirano and S.Kikuta: "X-Ray Parametric Scattering by a Diamond Crystal" Proceedings of the 6th SRI,Himeji, August 1997. (in press).

Y.Yoda、T.Suzuki、X.W.Zhang、K.Hirano 和 S.Kikuta：“钻石晶体的 X 射线参数散射”第六届 SRI 会议记录，姬路，1997 年 8 月。（出版中）。

菊田惺志: "SRX線の2光子相関" 日本放射光学会誌. 4. (1997)

Atsushi Kikuta：“SRX 射线的双光子相关性”日本放射光学学会杂志 4。（1997 年）

Y.Yoda: "X-Ray Parametric Scattering by a Diamond Crystal" Proceedings of the 6th International Conference on Synchrotron Radiation Instrumentation.in press. (1997)

Y.Yoda：“钻石晶体的 X 射线参数散射”第六届同步辐射仪器国际会议论文集。已出版。

T.Harami: "Inelasstic X-Ray Scattering by Electrons and Nuclei in Hemoglobin Solution" Proceeding of ICAME'97.in preaa. (1997)

T.Harami：“血红蛋白溶液中电子和原子核的非弹性 X 射线散射”ICAME97 论文集。in preaa。