Improvement of our neutron spin echo (NSE) spectrometer and NSE studies on dynamics in complex fluids

改进我们的中子自旋回波 (NSE) 谱仪以及复杂流体动力学的 NSE 研究

• 批准号: 16540289
• 负责人: TAKEDA Takayoshi
• 金额: $ 2.24万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16540289/
• 关键词: neutron spin echo; dynamics; complex fluids; membrane; amphiphiles; lipid; neutron scattering; surfactant

The purpose of this project is to improve our neutron spin echo spectrometer iNSE and to investigate mesoscopic parameters like the bending modulus on the local scale of the interfacial membrane deduced from the dynamical structure factor using neutron spin echo spectroscopy (NSE) in order to elucidate the self-assembling mechanisms in complex fluids involving amphiphiles. Correction coils such as wide cross section spiral correction coils developed using this grant led to great upgrade of iNSE and the observed neutron efficiency increased more than ten times. We have developed the new-type spin flippers, which operate with steady current for a white neutron beam, for a time-of-flight NSE spectrometer at a pulsed spallation neutron source (JSNS) in J-PARC. The performance test of the new-type spin flippers improved using this grant showed that the flippers worked well for a pulsed white neutron beam. We have studied dynamics such as membrane undulation, mesoscopic structures and the temperature-and the pressure-induced structural phase transition in complex fluids involving amphiphiles such as dipalmitoylphosphatidylcholine(DPPC)/water/CaCl_2 systems, the non-ionic surfactant C_<12>E_5/water/ethanol systems and ionic surfactant AOT/oil/water systems by means of NSE and small angle scattering experiments.

该项目的目的是改善我们的中子旋转回声光谱仪INSE并研究介质参数，例如使用中子旋转回声光谱（NSE）从动力学结构中推导的界面膜的弯曲模量，以阐明涉及复杂流体的自我组合机制，使其涉及复杂的机制。使用该赠款开发的宽横截面螺旋校正线圈等校正线圈导致了INSE的大量升级，并且观察到的中子效率提高了十倍以上。我们已经开发了新型自旋拖鞋，该拖鞋在脉冲散布中子频谱仪中，在J-PARC中的脉冲散布中子源（JSN）处于飞行时间的NSE光谱仪。使用此赠款改进了新型自旋拖鞋的性能测试表明，肢体在脉冲白色中子束方面表现良好。我们已经研究了诸如膜衰竭，介质结构以及温度以及压力诱导的结构相变的动力学。 NSE和小角度散射实验的平均值。

项目成果

Structural changes of Dipalmitoylphosphtidylcholine(DPPC) aqueous solution induced by temperature, pressure and adding ethanol

温度、压力和添加乙醇引起的二棕榈酰磷脂酰胆碱(DPPC)水溶液的结构变化

• 发表时间: 2007
• 期刊: J. Phys. Soc. Jpn. (to be published)(掲載決定)
• 作者: Seiji Uryu;Tsuneya Ando;H.Seto
• 通讯作者: H.Seto

Concentration Fluctuations and Cluster Dynamics of 2-Butoxyetanol-Water Mixtures by Small-angle Neutron Scattering and Neutron Spin Echo Techniques

小角中子散射和中子自旋回波技术研究 2-丁氧基乙醇-水混合物的浓度波动和团簇动力学

• 发表时间: 2005
• 期刊: Journal of Molecular Liquid 119
• 作者: 鈴浦 秀勝;安藤恒也;S.Kumashiro;K.Koshida
• 通讯作者: K.Koshida

Concentration Fluctuations and Cluster Dynamics of 2-Butoxyetahnol-Water Mixtures by Small-angle Neutron Scattering and Neutron Spin Echo Techniques

小角中子散射和中子自旋回波技术研究 2-丁氧基乙醇-水混合物的浓度波动和团簇动力学

• 发表时间: 2005
• 期刊: Journal of Molecular Liquid 119
• 作者: K.Yoshida;T.Yamaguchi;T.Otomo;M.Nagao;H.Seto;T.Takeda
• 通讯作者: T.Takeda

Development of π and π/2 flippers for a neutron spin echo spectrometer

中子自旋回波谱仪的 π 和 π/2 翻转器的开发

• 发表时间: 2007
• 期刊: J. Neutron Rsearch 15
• 作者: Takeda T.;Yamada N. -L;Katou K.;Nagao M.;Seto H.;Kawabata Y.;Takeda M.;Torikai N.
• 通讯作者: Torikai N.

Concentration Fluctuations and Cluster Dynamics of 2-Butoxyetahnol-Water Mixtures by Small-angle Neutron Scattering and Neutron Spin Echo Technique

小角中子散射和中子自旋回波技术研究 2-丁氧基乙醇-水混合物的浓度波动和团簇动力学

• 发表时间: 2005
• 期刊: Journal of Molecular Liquid 119
• 作者: H.Sakai;Y.Takane;Tsuneya Ando;Y.T.Cui 他13名;F.Shimizu et al.;K.Yoshida
• 通讯作者: K.Yoshida