| A DNP SPECTROMETER AT 1.94 T MAGNETIC FIELD |
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| 作者姓名： | 李丽云 裘鑑卿 胡曙光 刘午阳 叶朝辉 |
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| 作者单位： | Loboratory of Magnetic Resonance and Atomic and Molecular Physics，Wuhan Institute of Physics，Academia Sinica，Wuhan 430071，PRC，Loboratory of Magnetic Resonance and Atomic and Molecular Physics，Wuhan Institute of Physics，Academia Sinica，Wuhan 430071，PRC，Loboratory of Magnetic Resonance and Atomic and Molecular Physics，Wuhan Institute of Physics，Academia Sinica，Wuhan 430071，PRC，Loboratory of Magnetic Resonance and Atomic and Molecular Physics，Wuhan Institute of Physics，Academia Sinica，Wuhan 430071，PRC，Loboratory of Magnetic Resonance and Atomic and Molecular Physics，Wuhan Institute of Physics，Academia Sinica，Wuhan 430071，PRC |
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| 基金项目： | Project supported by the National Natural Science Foundation of China. |
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| 摘 要： | We describe a home-made dynamic nuclear polarizatioD (DNP) spectrometer at a fieldof 1.94 T, corresponding to Larmor frequencies 83 MHz and 54 GHz for proton and electron,respectively. Its NMR part is a modified Bruker WP--80SY spectrometer. A 6--mm EIO (ex-tended interaction oscillator) Klystron D3070, with a maximum output power of 30W in cwmode, served as the microwave source of ESR. In ~1H and ~(13)C DNP and DNP--CP (crosspolarization) experiments the probe consisted of a horn-antenna, a movable reflector and adouble-tuned circuit for ~1H and ~(13)C. The proton and carbon NMR signals were enhanced byone to two orders of magnitude for typical samples. Some results are presented in thispaper.
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A DNP SPECTROMETER AT 1.94 T MAGNETIC FIELD |
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| LI LI-YUN,QIU JIAN-QING,HU SHU-GUANG,LIU WU-YANG,YE CHAO-HUI Loboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics,Academia Sinica,Wuhan ,PRC.A DNP SPECTROMETER AT 1.94 T MAGNETIC FIELD[J].Science in China(Chemistry),1992(10). |
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| Authors: | LI LI-YUN QIU JIAN-QING HU SHU-GUANG LIU WU-YANG YE CHAO-HUI Loboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics Academia Sinica Wuhan PRC |
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| Institution: | LI LI-YUN,QIU JIAN-QING,HU SHU-GUANG,LIU WU-YANG,YE CHAO-HUI Loboratory of Magnetic Resonance and Atomic and Molecular Physics,Wuhan Institute of Physics,Academia Sinica,Wuhan 430071,PRC |
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| Abstract: | We describe a home-made dynamic nuclear polarizatioD (DNP) spectrometer at a field
of 1.94 T, corresponding to Larmor frequencies 83 MHz and 54 GHz for proton and electron,
respectively. Its NMR part is a modified Bruker WP--80SY spectrometer. A 6--mm EIO (ex-
tended interaction oscillator) Klystron D3070, with a maximum output power of 30W in cw
mode, served as the microwave source of ESR. In ~1H and ~(13)C DNP and DNP--CP (cross
polarization) experiments the probe consisted of a horn-antenna, a movable reflector and a
double-tuned circuit for ~1H and ~(13)C. The proton and carbon NMR signals were enhanced by
one to two orders of magnitude for typical samples. Some results are presented in this
paper. |
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| Keywords: | dynamic nuclear polarization (DNP) DNP magnetic resonance spectrometer solid-state NMR |
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