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High-power Radiofrequency Electronics

High-power Radiofrequency Electronics. - The system must produce and transmit r.f. power levels of several hundreds of watts, and the probe circuit must not arc during the high-power pulses. Modern instrumentation is designed to conform to the necessary standards. [Pg.88]

DNP at very low magnetic fields is attractive for two reasons. First, the electron saturation frequency at low fields is in the radiofrequency range, where it is much easier to obtain high-power radiation sources, amplifiers and transmission equipment. In fact, the first experimental verifications of the Overhauser effect were conducted between 1 and 5 mT,2/85/86 likely due to the ease of constructing a suitable magnet and equipment to perform ESR saturation. The second reason for adding DNP to a low-field system is to help overcome the limited thermal polarization at low... [Pg.100]

See other pages where High-power Radiofrequency Electronics is mentioned: [Pg.229]    [Pg.469]    [Pg.1005]    [Pg.225]    [Pg.7]    [Pg.649]    [Pg.1269]    [Pg.235]    [Pg.238]    [Pg.358]    [Pg.268]    [Pg.571]    [Pg.312]    [Pg.55]    [Pg.301]    [Pg.38]    [Pg.259]    [Pg.72]    [Pg.187]    [Pg.667]    [Pg.342]    [Pg.173]    [Pg.192]    [Pg.234]    [Pg.122]    [Pg.67]    [Pg.96]    [Pg.492]    [Pg.571]   


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