Physical nature of 'anomalous' electrons in high-current vacuum diodes
Introduction/purpose: A fundamental theoretical explanation is given for the fact that in subnanosecond vacuum diodes there exists a group of electrons with kinetic energies much higher than the applied voltage (multiplied by the value of the elementary charge) qUmax. Methods: A mathematical met...
Guardado en:
| Autores principales: | , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
University of Defence in Belgrade
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/0395724f76c14edb84f3e5b280a7806d |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| id |
oai:doaj.org-article:0395724f76c14edb84f3e5b280a7806d |
|---|---|
| record_format |
dspace |
| spelling |
oai:doaj.org-article:0395724f76c14edb84f3e5b280a7806d2021-12-02T14:05:33ZPhysical nature of 'anomalous' electrons in high-current vacuum diodes10.5937/vojtehg69-301160042-84692217-4753https://doaj.org/article/0395724f76c14edb84f3e5b280a7806d2021-04-01T00:00:00Zhttps://scindeks-clanci.ceon.rs/data/pdf/0042-8469/2021/0042-84692102391K.pdfhttps://doaj.org/toc/0042-8469https://doaj.org/toc/2217-4753Introduction/purpose: A fundamental theoretical explanation is given for the fact that in subnanosecond vacuum diodes there exists a group of electrons with kinetic energies much higher than the applied voltage (multiplied by the value of the elementary charge) qUmax. Methods: A mathematical method is used based on the numerical solution of the Vlasov-Poisson differential equations system for one-dimensional vacuum diodes of various designs. Results: It is shown in detail that the so-called "anomalous" electrons appear in the transient time domain characterizing the processes of establishing current flow in vacuum diodes. Conclusion: It has been convincingly shown that the presence of “anomalous” electrons is not associated with either the diode design or the presence of additional current carriers. In vacuum diodes with a subnanosecond leading edge of the voltage pulse, the excess of energy over qUmax can be over 20%.Vasily Y. KozhevnikovAndrey V. KozyrevUniversity of Defence in Belgradearticlenumerical simulationvacuum electronicsvacuum breakdownMilitary ScienceUEngineering (General). Civil engineering (General)TA1-2040ENVojnotehnički Glasnik, Vol 69, Iss 2, Pp 391-404 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
numerical simulation vacuum electronics vacuum breakdown Military Science U Engineering (General). Civil engineering (General) TA1-2040 |
| spellingShingle |
numerical simulation vacuum electronics vacuum breakdown Military Science U Engineering (General). Civil engineering (General) TA1-2040 Vasily Y. Kozhevnikov Andrey V. Kozyrev Physical nature of 'anomalous' electrons in high-current vacuum diodes |
| description |
Introduction/purpose: A fundamental theoretical explanation is given for
the fact that in subnanosecond vacuum diodes there exists a group of
electrons with kinetic energies much higher than the applied voltage
(multiplied by the value of the elementary charge) qUmax.
Methods: A mathematical method is used based on the numerical solution
of the Vlasov-Poisson differential equations system for one-dimensional
vacuum diodes of various designs.
Results: It is shown in detail that the so-called "anomalous" electrons
appear in the transient time domain characterizing the processes of
establishing current flow in vacuum diodes.
Conclusion: It has been convincingly shown that the presence of
“anomalous” electrons is not associated with either the diode design or the
presence of additional current carriers. In vacuum diodes with a
subnanosecond leading edge of the voltage pulse, the excess of energy
over qUmax can be over 20%. |
| format |
article |
| author |
Vasily Y. Kozhevnikov Andrey V. Kozyrev |
| author_facet |
Vasily Y. Kozhevnikov Andrey V. Kozyrev |
| author_sort |
Vasily Y. Kozhevnikov |
| title |
Physical nature of 'anomalous' electrons in high-current vacuum diodes |
| title_short |
Physical nature of 'anomalous' electrons in high-current vacuum diodes |
| title_full |
Physical nature of 'anomalous' electrons in high-current vacuum diodes |
| title_fullStr |
Physical nature of 'anomalous' electrons in high-current vacuum diodes |
| title_full_unstemmed |
Physical nature of 'anomalous' electrons in high-current vacuum diodes |
| title_sort |
physical nature of 'anomalous' electrons in high-current vacuum diodes |
| publisher |
University of Defence in Belgrade |
| publishDate |
2021 |
| url |
https://doaj.org/article/0395724f76c14edb84f3e5b280a7806d |
| work_keys_str_mv |
AT vasilyykozhevnikov physicalnatureofanomalouselectronsinhighcurrentvacuumdiodes AT andreyvkozyrev physicalnatureofanomalouselectronsinhighcurrentvacuumdiodes |
| _version_ |
1718392002057338880 |