Hydrogen Permeability of Palladium Needles and Possibility of New Field Ion Source

Hydrogen Permeability of Palladium Needles and Possibility of New Field Ion Source
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钯针的氢渗透性和新场离子源的可能性

DOI：
10.1143/jjap.33.l1110
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
Hiroshi Adachi Hiroshi Adachi
Hiroshi Adachi Hiroshi Adachi
中科院分区：
--
文献类型：
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作者：
Tsutomu Teraoka;Hideaki Nakane Hideaki Nakane;Hiroshi Adachi Hiroshi Adachi

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我们认为，钯有潜力提供一种新的方法提供氢分子的场电离质子束源的针电极的顶点，因为它具有所有金属中最高的氢渗透性。在初步实验中测量了细钯针的氢渗透率，并且发现在600° C下对于1.5atm的氢压力为2.0×10-5 Torr·l/s。该值与散装钯的值相同，预期足以用于拟定的离子源。在电离实验中，检测到小的离子流。
We believe that palladium has the potential to provide a new method of supplying hydrogen molecules to the apex of the needle electrode of a field ionization proton beam source, because it has the highest hydrogen permeability among all metals. Hydrogen permeability of a fine palladium needle was measured in a preliminary experiment, and was found to be 2.0×10-5 Torr·l/s at 600° C for a hydrogen pressure of 1.5 atm. This value is of the same level as that for bulk palladium, and is expected to be sufficient for the proposed ion source. In the ionization experiments, a small ion curtent was detected.