| 摘要 |
A sample during its examination in the chamber of an X-ray diffraction camera comprising a chamber body mounted in the X-ray diffraction camera to traverse the X-ray axis in the camera, a passage extending through the chamber body coaxially with the X-ray axis of the camera, a nozzle in the chamber body discharging into the passage between the ends thereof and transversely of the X-ray axis of the camera, a bore in the chamber body merging and sample into the passage with the sample to be held in the X-ray axis of the camera and in front of the nozzle, a source of pressurized gas, a tube having an electrically conductive wall connected at one end to the source of gas and at the other end to the nozzle, current control means connected to the ends of the tube for feeding an electric current through the wall of the tube to heat the tube and the gas passing therethrough, and an electric temperature sensor mounted in the passage of the chamber body adjacent the X-ray axis of the camera and in front of the nozzle and being connected to the current control means for governing the magnitude of electric current through the wall of the tube. A gas cooler is connected in series between the source of pressurized gas and the tube.
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