J.P. Verboncoeur and Charles K. (Ned) Birdsall
EECS Department
University of California, Berkeley
Technical Report No. UCB/ERL M95/55
June 1995
http://www2.eecs.berkeley.edu/Pubs/TechRpts/1995/ERL-95-55.pdf
The transmitted current in a crossed-field gap has been characterized analytically by a number of authors [1], [4], [6] and [7]. Using a one dimensional PIC simulation, PDP1 [9], we explore the behavior of the crossed-field diode at B = B[Hull]. For mono-energetic (cold) emission, a rapid reduction of transmitted current is observed when the injected current exceeds the critical current by just 1%. Addition of a small electron temperature normal to the cathode eliminates the transition, even for kT/V~10[to the minus-5] (V = 10kV, gap = 1 cm, B = 337G, J = 1.69 A/cm[squared]), while an isotropic velocity distribution accelerates the transition.
BibTeX citation:
@techreport{Verboncoeur:M95/55, Author = {Verboncoeur, J.P. and Birdsall, Charles K. (Ned)}, Title = {Rapid Current Transition in a Crossed-Field Diode}, Institution = {EECS Department, University of California, Berkeley}, Year = {1995}, Month = {Jun}, URL = {http://www2.eecs.berkeley.edu/Pubs/TechRpts/1995/2814.html}, Number = {UCB/ERL M95/55}, Abstract = {The transmitted current in a crossed-field gap has been characterized analytically by a number of authors [1], [4], [6] and [7]. Using a one dimensional PIC simulation, PDP1 [9], we explore the behavior of the crossed-field diode at B = B[Hull]. For mono-energetic (cold) emission, a rapid reduction of transmitted current is observed when the injected current exceeds the critical current by just 1%. Addition of a small electron temperature normal to the cathode eliminates the transition, even for kT/V~10[to the minus-5] (V = 10kV, gap = 1 cm, B = 337G, J = 1.69 A/cm[squared]), while an isotropic velocity distribution accelerates the transition.} }
EndNote citation:
%0 Report %A Verboncoeur, J.P. %A Birdsall, Charles K. (Ned) %T Rapid Current Transition in a Crossed-Field Diode %I EECS Department, University of California, Berkeley %D 1995 %@ UCB/ERL M95/55 %U http://www2.eecs.berkeley.edu/Pubs/TechRpts/1995/2814.html %F Verboncoeur:M95/55