| 摘要 |
FIELD: physics. ^ SUBSTANCE: tube has a metal housing in form of a hollow cylinder, one base of which is joined to the lager base of an insulator which is in form of a hollow flattened cone and lies outside the housing, and the other base of the housing is joined to a window for outlet of X-rays and a cathode through a hole in the centre of which a sharp anode passes towards the window. The first protective screen is in form of a cylindrical cup with a hole at the centre of the bottom and is joined to the housing and bounds the volume in which the sharp anode and the second protective screen in form of a disc are placed coaxially. The bottom of the first protective screen is in form of a hollow flattened cone with the smaller base on the side of the smaller base of the insulator, where the diameter of the hole in the cathode D1 of the second protective screen D2, the hole at the bottom of the first protective screen D3, the distance S1 between the top surface of the second protective screen the plane of the cathode and the distance S2 between the top surface of the second protective screen and the top surface of the smaller base of the hollow flattened cone of the first protective screen are linked by a certain relationship. ^ EFFECT: longer life of the pulsed X-ray tube. ^ 1 dwg |
