TY - GEN
T1 - Space-charge limited density of consecutively injected electron pulses with uniform separation
AU - Liu, Yao Li
AU - Zhang, Peng
AU - Chen, Shih Hung
AU - Ang, Lay Kee
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/8/25
Y1 - 2015/8/25
N2 - A one-dimensional model to study the space-charge limited density injection of a train of multiple electron pulse into a diode is presented. It is found that there is a maximal value of charge density per pulse for N number of pulse of equal time separation that can be injected. By comparing with numerical solutions, we obtain an analytical formula, which can quickly provide such upper limit of charge density injection once the values of gap spacing, gap voltage and the initial time separation between the pulses are provided. The model has been verified with the numerical solutions of the equation of motion up to a few MeV of beam energy for which the relativistic effect is included. This work should be useful in the design of multiple pulses of electron guns in the application of ultra-fast electron microscopy or free electron lasers.
AB - A one-dimensional model to study the space-charge limited density injection of a train of multiple electron pulse into a diode is presented. It is found that there is a maximal value of charge density per pulse for N number of pulse of equal time separation that can be injected. By comparing with numerical solutions, we obtain an analytical formula, which can quickly provide such upper limit of charge density injection once the values of gap spacing, gap voltage and the initial time separation between the pulses are provided. The model has been verified with the numerical solutions of the equation of motion up to a few MeV of beam energy for which the relativistic effect is included. This work should be useful in the design of multiple pulses of electron guns in the application of ultra-fast electron microscopy or free electron lasers.
UR - http://www.scopus.com/inward/record.url?scp=84954306427&partnerID=8YFLogxK
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U2 - 10.1109/IVEC.2015.7223778
DO - 10.1109/IVEC.2015.7223778
M3 - Conference contribution
AN - SCOPUS:84954306427
T3 - Proceedings of 2015 IEEE International Vacuum Electronics Conference, IVEC 2015
BT - Proceedings of 2015 IEEE International Vacuum Electronics Conference, IVEC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 16th IEEE International Vacuum Electronics Conference, IVEC 2015
Y2 - 27 April 2015 through 29 April 2015
ER -