Results 271 to 280 of about 252,539 (320)
Some of the next articles are maybe not open access.
Laser acceleration of electrons in vacuum
Physical Review E, 1995Several features of vacuum laser acceleration are reviewed, analyzed, and discussed, including electron acceleration by two crossed laser beams and acceleration by a higher-order Gaussian beam. In addition, the vacuum beat wave accelerator (VBWA) concept is proposed and analyzed. It is shown that acceleration by two crossed beams is correctly described
, Esarey, , Sprangle, , Krall
openaire +2 more sources
Physica, 1935
Summary The effect of the transit time of the electrons ought to be taken into account for a description of the performance of vacuum tubes at high frequencies. In this paper experiments on this subject are described Theoretical considerations are given. The agreement of the experimental and theoretical results is satisfactory.
C.J. Bakker, G. De Vries
openaire +1 more source
Summary The effect of the transit time of the electrons ought to be taken into account for a description of the performance of vacuum tubes at high frequencies. In this paper experiments on this subject are described Theoretical considerations are given. The agreement of the experimental and theoretical results is satisfactory.
C.J. Bakker, G. De Vries
openaire +1 more source
2011 IEEE International Vacuum Electronics Conference (IVEC), 2011
The vacuum electronic era started with the invention of vacuum diode by JA Fleming in 1904. However, the foundation of microwaves was laid in India much earlier by one of the fathers of radio science-Acharya Jagdish Chandra Bose in 1890's in Calcutta.
openaire +1 more source
The vacuum electronic era started with the invention of vacuum diode by JA Fleming in 1904. However, the foundation of microwaves was laid in India much earlier by one of the fathers of radio science-Acharya Jagdish Chandra Bose in 1890's in Calcutta.
openaire +1 more source
Vacuum electronics - 100 years
IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839), 2005"Fooling around with alternating current is just a waste of time. No-one will ever use it, ever." And yet the man who wrote those words made a discovery that helped alternating current become a practical and efficient medium for energy and information transfer.
openaire +1 more source
Electromagnetic vacuum fluctuations and electron coherence
Physical Review D, 1993The coupling of the quantized electromagnetic field to coherent electrons is investigated. The effects both of photon emission and of the electromagnetic vacuum fluctuations upon electron interference are analyzed. The modifications of the vacuum fluctuations due to a conducting plate lead to a decrease in the amplitude of the interference oscillations.
openaire +2 more sources
Ultrahigh Vacuum Electron Microscopes
2013Field-emission (FE) emitters are indispensable for atomic resolution EMs (ARMs) and analytical EMs (AEMs). Therefore, we had to do best to produce UHV in EMs on market.
openaire +1 more source
From molecular to supramolecular electronics
Nature Reviews Materials, 2021Hongliang Chen, J Fraser Stoddart
exaly
History of Vacuum Electronics and Vacuum Electron Sources and Future Development Trends
2020The historical rise of vacuum electronics (VE) was enabled by the availability of electrical power and by improved vacuum techniques, but its further progress relied on improved electron sources and their control. The development of VE has been pushed by several technological waves/cycles, starting with incandescent lamps, continuing with the radio ...
openaire +1 more source