Sharp and Stable Metal Tips for Helium Ionization at mK Temperatures
Sharp and Stable Metal Tips for Helium Ionization at mK Temperatures
复制标题
锋利稳定的金属尖端,用于 mK 温度下的氦电离
DOI:
10.1023/a:1022583729253
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发表时间:
1998
影响因子:
2
通讯作者:
H. Ishimoto
中科院分区:
文献类型:
--
作者:
A. Golov;H. Ishimoto
We report a simple and reliable technique of etching tungsten tips to be used for field ionization of liquid helium. Such tips routinely yielded a positive current of 1 - 100 pA at a voltage of only 400 - 600 V and worked without degradation for many months. Some suggestions for the successful use of such tips are discussed.