| 摘要 |
Provided are an X-ray tube device and negative electrode with which it is possible to inhibit variation in the temperature of an electron release part, while inhibiting deformation in the electron release part. The X-ray tube device is provided with a positive electrode and a negative electrode (1) for releasing electrons at the positive electrode. The negative electrode (1) includes: an electron release part (11) having a current passage (111) formed in a flat plate shape; a pair of terminal parts (12) connected to an electrode; and supports (13a, 13b) for supporting the electron release part (11), the support parts (13a, 13b) being provided separately from the terminal parts (12) and insulated from the electrode. The terminal parts (12) include expanded parts (121, 122), the cross-sectional area thereof being such that the cross-section area in the direction orthogonal to the direction in which the terminal part (12) extends is greater than the cross-section area of the current passage (111) in the direction orthogonal to the direction in which the current passage (111) extends. |
