An experimental setup to demonstrate a recent scheme [Leopold et al., Phys. Plasmas 24, 073116 (2017)] to persistently over-inject a vacuum electron diode so that it self-oscillates in the GHz-frequency range and releases a periodic train of electron bunches is described. We present simulations in which we account for the finite rise time of the voltage accelerating electrons from a finite radius cylindrical thermionic cathode and finite grid electrode transparency, which make the experiment different from the original theoretical scheme. It was found that these experimental conditions do affect the expected results but a self-oscillating behavior is still possible. Our experimental results so far indicate the presence of the self-oscillatory behavior, but because the cathode used emits from a few hot-spots rather than uniformly, the beam current modulations are different from those obtained in the simulations.
Skip Nav Destination
Article navigation
March 2019
Research Article|
March 19 2019
Self-oscillations in an over-injected electron diode – Experiment and analysis
M. Siman-Tov;
M. Siman-Tov
Physics Department, Technion, Israel Institute of Technology
, Haifa 3200003, Israel
Search for other works by this author on:
J. G. Leopold;
J. G. Leopold
Physics Department, Technion, Israel Institute of Technology
, Haifa 3200003, Israel
Search for other works by this author on:
Ya. E. Krasik
Ya. E. Krasik
Physics Department, Technion, Israel Institute of Technology
, Haifa 3200003, Israel
Search for other works by this author on:
Phys. Plasmas 26, 033113 (2019)
Article history
Received:
January 03 2019
Accepted:
February 26 2019
Citation
M. Siman-Tov, J. G. Leopold, Ya. E. Krasik; Self-oscillations in an over-injected electron diode – Experiment and analysis. Phys. Plasmas 1 March 2019; 26 (3): 033113. https://doi.org/10.1063/1.5087708
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00
Citing articles via
Related Content
A self-oscillating electron beam experiment
Phys. Plasmas (February 2020)
γ Radiolysis of Liquids at High Pressures. III. Aqueous Solutions of Sodium Bicarbonate
J. Chem. Phys. (May 2004)
A high‐pressure conductivity and laser Raman spectroscopic study of aqueous orthophosphate solutions at 25 °C
J. Chem. Phys. (July 2008)
γ‐Radiolysis of Liquids at High Pressures. I. Aqueous Solutions of Ferrous Sulfate
J. Chem. Phys. (May 2004)
Overtone spectroscopy of propyne and propyne‐d1
J. Chem. Phys. (January 1989)