HYDROGEN CONCENTRATION METER

摘要

Apparatus (hydrogen concentration meter) is provided which can measure the density of hydrogen in monitored gas even in environments with high radiation dose, requires no driving electric source, and can measure the density of hydrogen in monitored gas even when the temperature surrounding apparatus becomes high. Hydrogen concentration meter 100 related to the present invention is apparatus for measuring the density of hydrogen in gas, comprising: a first electrode 1 formed of a first metal; a second electrode 2 facing the first electrode 1 and formed of a second metal having work function different from that of the first metal; and at least one of the first electrode 1 and the second electrode 2 detecting electrically charged particle generated electrically between the first electrode 1 and the second electrode 2 by recoil proton generated by irradiated neutron.