Počet záznamů: 1

Novel simulation method of space charge effects in electron optical systems including emission of electrons

SYSNO ASEP	0489598
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Novel simulation method of space charge effects in electron optical systems including emission of electrons
Tvůrce(i)	Zelinka, Jiří (UPT-D)_{RID, SAI} Oral, Martin (UPT-D)_{RID, ORCID, SAI} Radlička, Tomáš (UPT-D)_{RID, ORCID, SAI}
Celkový počet autorů	3
Zdroj.dok.	Ultramicroscopy. - : Elsevier - ISSN 0304-3991 Roč. 184, JAN (2018), s. 66-76
Poč.str.	11 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	space charge ; self-consistent simulation ; aberration polynomial ; electron emission
Vědní obor RIV	JA - Elektronika a optoelektronika, elektrotechnika
Obor OECD	Electrical and electronic engineering
CEP	LO1212 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	ED0017/01/01 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Institucionální podpora	UPT-D - RVO:68081731
UT WOS	000417779800009
EID SCOPUS	85032508057
DOI	10.1016/j.ultramic.2017.10.010
Anotace	We present a comprehensive numerical method for iterative computation of electron optical systems influenced by space charge which can accurately describe all effects in an optical system, including areas near a cathode tip and all crossovers. We use two different algorithms of evaluating the space charge distribution in different parts of the system. The Monte-Carlo based particle-in-cell method is used in the vicinity of the cathode. The algorithm based on the calculation of the current density distribution from an aberration polynomial is used for the rest of the system. We introduce a re-meshing algorithm which adapts the finite element mesh used for the field calculation in each iteration to the actual space charge distribution to keep it sufficiently fine in all areas with non-zero space charge. The algorithm is finally tested on a design of an experimental electron-welding machine developed at the ISI of the CAS.
Pracoviště	Ústav přístrojové techniky
Kontakt	Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
Rok sběru	2019

Počet záznamů: 1