| 摘要 |
The present invention provides a method for measuring nuclear material using nuclear fission reaction by neutrons and a low temperature detector and a device for the same. The method for measuring nuclear material using nuclear fission reaction by neutrons and a low temperature detector provided in the present invention includes: a step (step 1) of radiating neutrons onto a sample; a step (step 2) of acquiring a temperature signal from temperature change due to nuclear fission reaction by the neutrons radiated in the step 1; and a step (step 3) of measuring a nuclear fission reaction rate from the temperature signal in the step 2 and determining nuclear material. Furthermore, the device for measuring nuclear material using nuclear fission reaction by neutrons and a low temperature detector provided in the present invention includes: a gold foil piece in which a sample is sealed; a low temperature detector which is attached onto one surface of the gold foil piece; an amplification unit which amplifies a signal detected by the low temperature detector; a chamber which forms a sealed system by storing the gold foil piece, low temperature detector, and amplification unit inside; and a neutron source which discharges neutrons into the chamber. According to the present invention, by replacing the measurement of alpha particles from alpha decay in the Q- spectroscopy technology using a low temperature detector with measurement of nuclear fission products from nuclear fission by neutrons, the present invention is able to improve measurement sensitivity and the signal-to-noise ratio, thereby enabling easy and fast measurement of a small amount of nuclear material. |
