Electron Spin Resonance Apparatus

摘要

A pulse pattern forming a pulse sequence is repeatedly generated according to a repetition frequency Fp, and an original pulse train is generated. A modulation signal which repeats ON and OFF states at a modulation frequency Fm is generated. Fp and Fm are in a relationship Fp=2n×Fm, wherein n is an integer greater than or equal to 1. The original pulse train is modulated according to the modulation frequency Fm, and a pulse train signal is generated. A microwave signal is modulated by the pulse train signal and is supplied to an electron spin resonance chamber. By executing a lock-in demodulation on a detection signal reflecting electron spin resonance using the modulation frequency Fm, an ESR signal is obtained.

主权项

1. An electron spin resonance apparatus comprising:
a microwave generator that generates a microwave signal; a pulse train signal generator that generates a pulse train signal according to a modulation frequency Fm and a repetition frequency Fp of a pulse sequence; an excitation signal generator that applies the pulse train signal on the microwave signal to generate an excitation signal; an electron spin resonance chamber that houses a sample and to which the excitation signal is sent; and a demodulator that executes a lock-in demodulation using the modulation frequency Fm on a detected signal reflecting electron spin resonance caused in the sample, to generate an analysis target signal, wherein the repetition frequency Fp and the modulation frequency Fm are in a relationship Fp=2n×Fm, wherein n is an integer greater than or equal to 1.