The cosine law of field enhancement factor variation: generic emitter shapes

Autor:	Biswas, Debabrata, Singh, Gaurav, Ramachandran, Rajasree
Rok vydání:	2018
Předmět:	Physics - Applied Physics Condensed Matter - Mesoscale and Nanoscale Physics Physics - Accelerator Physics Physics - Plasma Physics
Zdroj:	Physica E, 109, 179-182 (2019)
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physe.2019.01.005
Popis:	The cosine law of field enhancement factor variation was recently derived for a hemi-ellipsoidal emitter and numerically established for other smooth emitter shapes (Biswas et al, Ultramicroscopy, 185, 1 (2018)). An analytical derivation is provided here for general smooth vertical emitter shapes aligned in the direction of the asymptotic electrostatic field. The law is found to hold in the neighbourhood of the emitter apex from where field emisson pre-dominantly occurs. Comment: 5 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1810.11830 Zobrazit plný text záznamu View this record from Arxiv