TY - JOUR N2 - Noise diagnostics has been performed on the cold field-emission cathode in high-vacuum. The tested cold field-emission cathode, based on tungsten wire with ultra-sharp tip coated by epoxy was designed to meet the requirements of transmission electron microscopy, which uses a small and stable source of electrons. Current fluctuations are reduced by improving the structure and fabrication technology. Noise was measured both in time and frequency domains, which gives information about current fluctuations and also about charge transport. Mutual correlation between the noise spectral density, extractor voltage and beam brightness was analyzed. L1 - http://www.journals.pan.pl/Content/89940/PDF/Journal10178-VolumeXIX%20Issue2_21paper.pdf L2 - http://www.journals.pan.pl/Content/89940 PY - 2012 IS - No 2 EP - 422 DO - 10.2478/v10178-012-0036-5 KW - cold field-emission cathode KW - noise diagnostics KW - epoxy coating A1 - Knápek, Alexandr A1 - Grmela, Lubomír A1 - Šikula, Josef A1 - Šik, Ondřej PB - Polish Academy of Sciences Committee on Metrology and Scientific Instrumentation DA - 2012 T1 - Cold Field-Emission Cathode Noise Analysis SP - 417 UR - http://www.journals.pan.pl/dlibra/publication/edition/89940 T2 - Metrology and Measurement Systems ER -