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Continuously Tunable 250 GHz Gyrotron with a Double Disk Window for DNP-NMR Spectroscopy.
Journal of Infrared Millimeter and Terahertz Waves ( IF 2.9 ) Pub Date : 2012-11-15 , DOI: 10.1007/s10762-012-9947-1
Sudheer Jawla 1 , Qing Zhe Ni , Alexander Barnes , William Guss , Eugenio Daviso , Judith Herzfeld , Robert Griffin , Richard Temkin
Affiliation  

In this paper, we describe the design and experimental results from the rebuild of a 250 GHz gyrotron used for Dynamic Nuclear Polarization enhanced Nuclear Magnetic Resonance spectroscopy on a 380 MHz spectrometer. Tuning bandwidth of approximately 2 GHz is easily achieved at a fixed magnetic field of 9.24 T and a beam current of 95 mA producing an average output power of >10 W over the entire tuning band. This tube incorporates a double disk output sapphire window in order to maximize the transmission at 250.58 GHz. DNP Signal enhancement of >125 is achieved on a 13C-Urea sample using this gyrotron.

中文翻译:

具有双盘窗口的连续可调谐 250 GHz 回旋管,用于 DNP-NMR 波谱分析。

在本文中,我们描述了在 380 MHz 波谱仪上重建用于动态核极化增强核磁共振波谱的 250 GHz 回旋管的设计和实验结果。在 9.24 T 的固定磁场和 95 mA 的束电流下,可以轻松实现大约 2 GHz 的调谐带宽,在整个调谐频带上产生 >10 W 的平均输出功率。该管采用双盘输出蓝宝石窗口,以最大限度地提高 250.58 GHz 的传输率。使用该回旋管在13 C-尿素样品上实现了 >125 的 DNP 信号增强。
更新日期:2012-11-15
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