X-band 1H-DNP Experiments and High-Power Subterahertz Wave Irradiation Effect on BDPA-Doped Toluene Solution
X-band 1H-DNP Experiments and High-Power Subterahertz Wave Irradiation Effect on BDPA-Doped Toluene Solution
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X波段1H-DNP实验及高功率亚赫兹波辐照对BDPA掺杂甲苯溶液的影响
DOI：
10.1007/s00723-008-0125-5
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发表时间：
2008
影响因子：
1
通讯作者：
M. Chiba
中科院分区：
文献类型：
--
作者：
M. Toda;Y. Fujii;S. Mitsudo;I. Ogawa;T. Idehara;T. Saito;H. Ito;M. Chiba
摘要：为了研究动态核极化（DNP）实验中的实验技术和高磁场效应，在室温下对双二亚苯基-苯基烯丙基掺杂甲苯溶液进行了X波段1H-DNP和高功率亚赫兹波辐照实验。我们建立了样品梭X波段DNP实验系统，并研究了外部磁场、微波功率和Overhauser增强因子（ε）的1H T1−1依赖性。已观察到约-19的最大信号增强。在太赫兹波实验方面，我们构建了核磁共振和电子自旋共振测量系统，用于约10.7 T磁场下的实验，光源为高功率陀螺仪CW-I（TE22,8模式，f ∼ 299.23 GHz）。当回旋管的高功率亚赫兹波照射在甲苯溶液上以确认DNP的证据时，样品由于电磁波加热而蒸发。
Abstract.To investigate the experimental technique and the high magnetic field effect in the dynamic nuclear polarization (DNP) experiments, X-band 1H-DNP and high-power subterahertz wave irradiation experiments have been performed on bisdiphenylene-phenylallyl-doped toluene solution at room temperature. We have established a sample-shuttle X-band DNP experimental system, and investigated the external magnetic field, the microwave power and 1H T1−1 dependences of the Overhauser enhancement factor (ε). A maximal signal enhancement of approximately −19 has been observed. As for the subterahertz wave experiments, we have constructed a nuclear magnetic resonance and electron spin resonance measurement system for the experiments under the magnetic field of about 10.7 T, with a high-power light source gyrotron CW-I (TE22,8 mode, f ∼ 299.23 GHz). when the high-power subterahertz wave of a gyrotron was irradiated on the toluene solution in order to confirm the evidence of DNP, the sample has evaporated due to the electromagnetic wave heating.
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影响因子：
4.4
作者：
Hu, Kan-Nian;Bajaj, Vikram S.;Griffin, Robert G.
通讯作者：
Griffin, Robert G.
影响因子：
15
作者：
Rosay, M;Zeri, AC;Griffin, RG
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通讯作者：
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作者：
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通讯作者：
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影响因子：
15
作者：
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通讯作者：
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