To provide a transmission type radiation tube with high reliability capable of being driven and generating radiation for a long time by suppressing an increase in temperature of a transmission substrate, and a radiation imaging apparatus.
In the radiation generating apparatus, a transmission type radiation tube 11 is housed in a storage container 12 filled with a cooling medium, the transmission type radiation tube comprises an envelope 14 having an opening part 14a, an electron emission source 15 provided facing the opening part 14a of the envelope inside the envelope, a transmission substrate 19 for transmitting radiation, a target 18 arranged on a surface at the electron emission source side of the transmission substrate 19 and generating the radiation by being irradiated with electrons emitted from the electron emission source 15, and a shielding body 20 for shielding the radiation emitted from the target, the shielding body projects to the outside of the envelope 14 and comprises a passage 20a communicating with the opening 14a of the envelope 14, at least part of the transmission substrate 19 provided in the passage 20a is arranged so as to project to the outside of an external wall of the envelope 14, and the cooling medium contacts with at least part of the shielding body 20.
TAMURA MIKI
SATO YASUE
OGURA TAKAO
NOMURA ICHIRO
AOKI SHUJI
| JP2008535183A | 2008-08-28 | |||
| JP2004235113A | 2004-08-19 | |||
| JPH06162972A | 1994-06-10 | |||
| JPS546881U | 1979-01-17 | |||
| JP2005523558A | 2005-08-04 | |||
| JPH07260713A | 1995-10-13 | |||
| JP2002343290A | 2002-11-29 |
Yoshihiro Yamaguchi