e-Journal of Surface Science and Nanotechnology
Online ISSN : 1348-0391
ISSN-L : 1348-0391
Conference -ALC '15-
Development of a High-Precision Power Supply and Current Measuring Device for Field Emission Spectroscopy
Shigeki KumagaiHidekazu MurataHirotaka AsaiEiji RokutaHiroshi Shimoyama
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2016 Volume 14 Pages 97-102


Considerable attention is currently being given to nanotip electron sources. These have a number of desirable emission characteristics, including high current density at low voltage, a small source size leading to high coherency, and narrow confinement of the electron beam. To date, we have developed a high-precision energy analyzer capable of obtaining the emission spectrum of the electrons emitted from a nanotip electron source. To improve the resolution of the analyzer, we design an optimum energy analyzer electrode and a more stable power supply. Moreover, the beam current measurement circuit is needed to facilitate the adjustment of the optical axis. Therefore, we have also developed a computer-controlled power supply with low noise, low ripple, and stable output voltage, together with a current measurement circuit and its associated software. [DOI: 10.1380/ejssnt.2016.97]

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