| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and apparatus for measuring a flow pattern of a double-phase flow or a mixing state of a single-phase flow, in which radiation attenuation caused by a metal container is reduced and a fluid flowing inside the container can be observed when measuring the double-phase flow or the like inside the metal container while using radiation.SOLUTION: A radioactive substance is dissolved in a fluid flowing inside a container. Therefore, by using the inside of the container as a radiation source, a metal container area through which radiation is transmitted is reduced, radiation is detected from a measurement target per se, and the flow inside the container is observed. |
