Patent ID: 9702987
Date: 2017-07-11
CPC Classifications: G01T

Claim:
1. A neutron measurement apparatus comprising: a neutron detector configured to measure neutrons; a gamma ray detector configured to measure gamma rays; a neutron detector signal processing unit configured to receive signals from the neutron detector sequentially, to perform Fourier transform on the signals received for a prescribed period, to generate neutron detector signal frequency data in a frequency domain, thereby to calculate the neutron-detection signal power spectrum and to store the neutron detector signal power spectrum; a gamma-ray detector signal processing unit configured to receive signals from the gamma ray detector sequentially, to perform Fourier transform on the signals received for a prescribed period, to generate gamma ray detector signal frequency data in a frequency domain, thereby to calculate gamma ray detector signal power spectrum and to store the gamma ray detector signal power spectrum; and a neutron calculation unit configured to generate a neutron signal by removing a part contributed by the gamma-ray-detector signal power spectrum from the neutron detector signal power spectrum.