| 摘要 |
PURPOSE:To measure simultaneously nuclear magnetic resonance (NMR) and electron spin resonance (ESR) by providing a means which applies pulse modulation on a microwave and setting widths of exciting pulses for ESR observation and exciting pulses for NMR observation. CONSTITUTION:A microwave irradiation coil 3 for ESR and a saddle type detection coil 4 for NMR are provided in a probe 2 for ESR-NMR simultaneous measurement. Further, a microwave oscillator 6 for ESR generates a microwave, which is modulated by a modulator 8 and supplied to the coil 3 while a specific period is set by a pulse programmer 9. Then, microwaves are oscillated to the widths of the exciting pulses for NMR and ESR observation and the intensi ty of a magnetostatic field is varied; and signals of NMR and ESR are sent to memories 17N and 17E and detected. Thus, the modulator 8 imposes pulse width modulation on the NMR and ESR, which are therefore measured simulta neously. |
