Korea Atomic Energy Research Institute

Hee Sung Shin

Tae Hoon Lee

Ji Sup Yoon

Ho Dong Kim

Myung Kook Moon

June Sik Joo

Kwang Jun Park

Jung Hwan Jung

The present invention relates to a well type neutron counter containing a He-3 detector which includes at least one annular gas layer in a polyethylene moderator, which includes a body formed of a neutron moderator and having a sample cavity for inserting a sample of nuclear material therein; and an annular He-3 detector tube including at least one annular gas layer into which at least He-4 or He-3 gas or their mixture is injected and a plurality of anode rods stood in the annular gas layer with an equal spaces, wherein the He-3 detector tube is formed in an inside of the body so as to surround the sample cavity. The neutron counter has a largely reduced size, simplified structure and resultant decreased failure rate as compared to a conventional counter with a large volume.

Well type neutron counter containing an annular He-3 detector tube

Growing community of inventors

Daejeon, South Korea

Hee Sung Shin