Mitsubishi Heavy Industries Limited

Japan Aerospace Exploration Agency

Hamamatsu-photonics K.k.

Kei Gemba

Yoshikatsu Kuroda

Daisuke Matsuura

Shin Watanabe

Tadayuki Takahashi

Hiroshi Ikebuchi

Shin'ichiro Takeda

Hiroshi Arakawa

Kazuhisa Yamamura

Hiroo Yamamoto

Munehiro Komeda

Kazumasa Kosugi

A detector for a Compton camera includes a first radiation scattering layer; a second radiation scattering layer; and a radiation absorption layer disposed between the first radiation scattering layer and the second radiation scattering layer. The first radiation scattering layer and the radiation absorption layer configure at least a part of a first detector, and the second radiation scattering layer and the radiation absorption layer configure at least a part of a second detector.

Detector for Compton camera and Compton camera

A radiation measuring apparatus () includes a scatterer detector (A), an absorber detector (B) and a processing unit (). Pixel electrodes () of the scatterer detector (A) and the absorber detector (B) are arranged such that a distance between centers of two neighbor pixel electrodes () is smaller than a mean free path of a recoil electron generated in the Compton scattering of an electromagnetic radiation. The processing unit () specifies and incidence direction of the electromagnetic radiation based on a recoiling direction to which the recoil electron recoils. In this way, an electron tracking-type Compton camera is realized which confines the incidence direction of the electromagnetic radiation by using the recoiling direction of the recoil electron in a Compton camera using a semiconductor detector.

Radiation measuring apparatus and radiation measuring method

A semiconductor integrated circuit, a radiation detection unit and a cooling unit are provided. Here, a radiation detection unit is provided near the semiconductor integrated circuit and detects a radiation quantity. The cooling unit cools the semiconductor integrated circuit according to the detected radiation quantity. In an environment where a radiation quantity is more, the generation of a malfunction can be restrained by cooling the semiconductor integrated circuit.

Electronic device

A radioactive substance distribution map producing system includes a radiation detector, a position measuring unit and a radioactive substance distribution map producing apparatus. The radiation detector is loaded on a moving vehicle and measures radiations from radioactive substances. The position measuring unit measures a position of the moving vehicle. The radioactive substance distribution map producing apparatus receives measurement data which contains a measurement result by the radiation detector and position data of the moving vehicle measured by the position measuring unit. The radioactive substance distribution map producing apparatus produces a distribution map of the radioactive substances by using the measurement data obtained at the plurality of positions while the moving vehicle moves.

Radioactive substance distribution map producing system and method of producing radioactive substance distribution map

Growing community of inventors

Tokyo, Japan

Kei Gemba