| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an alkali metal generating source capable of stably heating an alkali metal member. Ž<P>SOLUTION: In this alkali metal generating source 1, a pellet 16 containing a raw material to generate alkali metal vapor is housed in a case 20. A ceramic substrate 18 on the back side 18b or in the inside of which a resistance heating part 21 is provided is housed in the case 20, and a current carrying pin 24 the base end part of which is fixed to the ceramic substrate 18 projects from the back side 18b of the ceramic substrate 18, The current carrying pin 24 is electrically connected to the resistance heating part 21, and the face 24a on the base end side is located in the further inside than the surface of the ceramic substrate 18. The pellet 16 is located on the surface 18a side of the ceramic substrate 18. By this structure, a current from the current carrying part 24 does not flow in the pellet 16, and flows only in the resistance heating part 21. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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