| 摘要 |
<p>An electron spin resonance spectrometer which includes a sample arm (16) and a reference arm (18). The sample arm has a circulator (30) for directing radiation to a resonator (22) in which a sample for analysis is deposited and also for receiving radiation from the resonator (22) and directing it to a detector (32). The detector (32) detects the microwave radiation from the sample arm (16) and reference arm (18) to determine a property or properties of said sample. The sample arm (16) and said reference arm (18) are formed as an integrated microwave bridge which includes a divider (14) having a first output portion coupled to an attenuator (20), said attenuator being coupled to said circulator (30) by a microwave transmission line. The resonator (22) is surrounded by a magnet (24) and modulation coils (26).</p> |
