A multifrequency high-field pulsed electron paramagnetic resonance/electron-nuclear double resonance spectrometer
A multifrequency high-field pulsed electron paramagnetic resonance/electron-nuclear double resonance spectrometer
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DOI：
10.1063/1.2937630
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发表时间：
2008-06-01
影响因子：
1.6
通讯作者：
van Tol, Johan
中科院分区：
文献类型：
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作者：
Morley, Gavin W.;Brunel, Louis-Claude;van Tol, Johan
我们描述了一个脉冲电子顺磁共振波谱仪在110-336 GHz的几个频率范围内工作。所有频率的微波源由从12-15 GHz范围的固态合成器开始的乘法器链组成。基频的快速p-i-n开关产生脉冲。在所有频率下，采用法布里-珀罗谐振器，π /2脉冲长度范围从110 GHz时的100纳秒到334 GHz时的600纳秒。在12 T下对含有稀Mn（2+）杂质的单晶的测量说明了大电子自旋极化的影响。这种能力也允许进行脉冲电子-核双共振（ENDOR）实验，如（39）K核在Cr:K(3)NbO(8)中的Mims ENDOR所证明的那样。(c) 2008年美国物理研究所。
We describe a pulsed electron paramagnetic resonance spectrometer operating at several frequencies in the range of 110-336 GHz. The microwave source at all frequencies consists of a multiplier chain starting from a solid state synthesizer in the 12-15 GHz range. A fast p-i-n-switch at the base frequency creates the pulses. At all frequencies a Fabry-Perot resonator is employed and the pi/2 pulse length ranges from similar to 100 ns at 110 GHz to similar to 600 ns at 334 GHz. Measurements of a single crystal containing dilute Mn(2+) impurities at 12 T illustrate the effects of large electron spin polarizations. The capabilities also allow for pulsed electron-nuclear double resonance (ENDOR) experiments as demonstrated by Mims ENDOR of (39)K nuclei in Cr:K(3)NbO(8). (c) 2008 American Institute of Physics.