Title :
Ill-posed problems of the emission electronics
Author :
Korolev, Dmitriy S. ; Korolev, Sergei V.
Author_Institution :
Fed. State Unitary Enterprise “All-Russia Electron. Tech. Inst. named after V.I. Lenin”, State Sci. Center Russian Federation, Moscow, Russia
Abstract :
It was demonstrated that all thermo-emission materials possess considerable emission heterogeneity; therefore the current take-off shall be described accordingly. An original current take-off equation was suggested with account of emission heterogeneity. The equation structurally represents a linear first kind Fredholm integral equation. It was demonstrated that the inverse problem - emission heterogeneity determination from emission test results - is ill-posed problems and requires involvement of a priori information for its solution. Two inversion algorithms connected with Tikhonov functional minimization were suggested. Good agreement of theoretical and experimental results was demonstrated.
Keywords :
Fredholm integral equations; electron field emission; inverse problems; minimisation; Tikhonov functional minimization; emission electronics; emission heterogeneity; inverse problem; inversion algorithm; linear first kind Fredholm integral equation; thermo-emission material; Cathodes; Earth Observing System; Equations; Films; Nickel; Temperature;
Conference_Titel :
Discharges and Electrical Insulation in Vacuum (ISDEIV), 2012 25th International Symposium on
Conference_Location :
Tomsk
Print_ISBN :
978-1-4673-1263-9
Electronic_ISBN :
1093-2941
DOI :
10.1109/DEIV.2012.6412541