Rigaku Corporation

Riken Corporation

Takahisa Sato

Hiroki Yoshida

Akihito Yamano

Kensaku Hamada

Kiyoshi Ogata

Yoshihiro Takeda

Tetsuo Kani

Motohide Yoshimura

Makoto Kanbe

Naohisa Osaka

Shoichi Yasukawa

An industrial X-ray tube formed by accommodating a cathode and anode in a container having an evacuated interior, in which electrons emitted from the cathode are caused to strike the anode and X-rays are emitted from the anode. The cathode is formed from graphite. The graphite is a layered crystal obtained by layering a plurality of carbon hexagonal planes. The graphite is cut based on crystal axes of the carbon hexagonal planes. The resulting cut surface is caused to function as an electron-emitting surface. For example, directions of an a- and b-crystal axis may be set so as to be arbitrary between each of the layers of the carbon hexagonal planes, the graphite may be cut along a surface parallel to the c-axis, and the resulting cut surface may be caused to function as an electron-emitting surface. The graphite may also be cut along a surface orthogonal to the c-axis.

Industrial X-ray tube

An X-ray generator includes a booster circuit formed by sequentially connecting a plurality of boosting steps extending from a low-voltage terminal to a high-voltage terminal of its own. The booster circuit is arranged in a lateral region of the X-ray tube so as to make the low-voltage terminal of its own correspond to the anode of the X-ray tube and the high-voltage terminal of its own correspond to the cathode of the X-ray tube. A lead wire extending from the cathode to the outside of the X-ray tube is connected to the high-voltage terminal of the booster circuit. A molded member containing insulating resin is formed to shield at least a cathode side end part of the X-ray tube, the lead wire outwardly extending from the cathode side end part and a high-voltage terminal side end part of the booster circuit.

Industrial X-ray generator

In a specific macromolecule crystal detecting method according to the present invention, ultraviolet light is irradiated to sample solution, and a fluorescent image emitted from a sample in the sample solution is detected to detect specific macromolecules in the sample solution. Furthermore, by detecting the outline of the sample from the visible light image of the sample contained in the sample solution, the crystal is discriminated from other materials on the basis of the outline. By integrating the detection results of the fluorescent image and the visible light image, the specific macromolecule crystal is detected from the sample solution.

Method of detecting specific polymer crystal

A specific macromolecule crystal evaluating device according to the present invention is equipped with a sample detecting stage for detecting a protein crystal in a sample container, an X-ray measuring stage that is spaced from the sample detecting stage and carries out X-ray diffraction measurement of the protein crystal, a feeding unit for feeding the sample container from the sample detecting stage to the X-ray measuring stage, and a central processing unit for recognizing the position of the protein crystal on the basis of the information achieved in the sample detecting stage and controlling the feeding unit on the basis of the position information to position the protein crystal to a sample disposing portion of the X-ray measuring stage.

Apparatus for estimating specific polymer crystal

Growing community of inventors

Akishima, Japan

Takahisa Sato