Korea Atomic Energy Research Institute

Myung Kook Moon

Tae Hoon Lee

Seung Wook Lee

Joo Hyun Lee

Ji Sup Yoon

Nam-Ho Lee

Ho Dong Kim

Nam Ho Lee

Yong Chil Seo

Young Gwan Hwang

Soon Yong Park

June Sik Joo

Jung Hwan Jung

Hee Sung Shin

Ki Seo Lim

Kwang Jun Park

Jong Yul Kim

Byoungil Jeon

Seung Chan Oh

A method for detecting a radionuclide using energy spectrum data represented by a count depending on energy obtained from a radiation detector, including: calculating a count ratio for a particular energy value using a background energy spectrum data measured without a target object to detect the radionuclide and a target energy spectrum measured in the presence of the target object; and comparing a background count ratio and a target object count ratio, where the count ratio is a ratio of a low count sum of count values which is an energy value or less divided by a high count sum of the count values which is greater than the particular energy value, or a ratio of the low count sum of the count values which is smaller than the particular energy value divided by the high count sum of the count values which is the particular energy value or greater.

Method for detecting radionuclide, process for detecting radionuclide using the same, and radiation detector for the same

A stereo x-ray inspection apparatus and a method for forming a three-dimensional image through volume reconstruction of an image acquired from the same are disclosed. The apparatus includes one x-ray generator and two detectors to acquire two images. The x-ray generator and detectors are arranged in the form of a right-angled triangle, to easily achieve mathematical development and analysis. One of the detectors, which does not just oppose the x-ray generator, is movable and rotatable, to acquire images under the condition that only one detector is moved in accordance with the size of an object, and thus to simplify control operation for the apparatus, so that a more accurate image from an object moving at high speed is acquired.

Stereo X-ray inspection apparatus and method for forming three-dimensional image through volume reconstruction of image acquired from the same

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

Myung Kook Moon