Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Emanuele Di Palma"'
Publikováno v:
Symmetry, Vol 15, Iss 12, p 2157 (2023)
The theory of Gaussian functions is reformulated using an umbral point of view. The symbolic method we adopt here allows an interpretation of the Gaussian in terms of a Lorentzian image function. The formalism also suggests the introduction of a new
Externí odkaz:
https://doaj.org/article/5fdc8c67ba964974a2361c21f490979d
Publikováno v:
Symmetry, Vol 15, Iss 2, p 515 (2023)
We discuss the general concepts underlying the design strategies of complex devices like Tokamaks and Free Electron Lasers (FEL). Regarding the FEL, starting from the desired output performances, the key parameters are embedded to get a set of semi-a
Externí odkaz:
https://doaj.org/article/f0e78b5b23d143d190fe6370fba32851
Publikováno v:
Applied Sciences, Vol 13, Iss 4, p 2645 (2023)
Along with the development of FEL X-ray sources, the design and the construction of Compton Back-Scattering (CBS) devices for different applications are being pursued. These sources are designed to provide monochromatic, high peak brightness tunable
Externí odkaz:
https://doaj.org/article/e23dd564c7784bfbb2d07eeff45699e2
Publikováno v:
Applied Sciences, Vol 12, Iss 20, p 10297 (2022)
The properties of electromagnetic undulators, produced by the field of a high-power microwave, are discussed. We analyze the conditions to be satisfied that allow the treatment of the emission process by relativistic charges moving through it in full
Externí odkaz:
https://doaj.org/article/750673e2baa043eb8cd7e1ac1730d652
Publikováno v:
Applied Sciences, Vol 12, Iss 12, p 6101 (2022)
Gyrotrons are used as high-power sources of coherent radiation operating in pulsed and CW regimes in many scientific and technological fields. In this paper, we discuss two of their numerous applications. The first one is in gyrotron-powered electrom
Externí odkaz:
https://doaj.org/article/505e62ea6ff4444fa696b87704bcdf87
Autor:
Emanuele Di Palma, Silvio Ceccuzzi, Gian Luca Ravera, Elio Sabia, Ivan Spassovsky, Giuseppe Dattoli
Publikováno v:
Applied Sciences, Vol 11, Iss 20, p 9499 (2021)
We discuss a hybrid Free Electron Laser (FEL) architecture operating with a RF undulator provided by a powerful Cyclotron Auto-Resonance Maser (CARM). We outline the design elements to operate a compact X-ray device. We review the essential aspects o
Externí odkaz:
https://doaj.org/article/7c0c0b22fb7c402384321d2f10495cd6
Publikováno v:
Applied Sciences, Vol 11, Iss 14, p 6462 (2021)
The possibility of extending the tunability of Free-Electron Lasers towards short wavelengths has been explored through the design of devices conceived to enhance the mechanisms of nonlinear harmonic generation. In this respect, different schemes of
Externí odkaz:
https://doaj.org/article/971af23b58b44c17b7bcc3dac93dde40
Publikováno v:
Symmetry, Vol 13, Iss 2, p 159 (2021)
The theory of Generalized Bessel Functions is reviewed and their application to various problems in the study of electro-magnetic processes is presented. We consider the cases of emission of bremsstrahlung radiation by ultra-relativistic electrons in
Externí odkaz:
https://doaj.org/article/63218d11840348be8052d6bab738d7c7
Publikováno v:
Applied Sciences, Vol 11, Iss 1, p 85 (2020)
The FEL integral equation is reviewed here and is studied under different contexts, accounting for diverse physical regimes. We include higher order harmonics and saturation effects, and explain the origin of scaling relations, widely exploited to de
Externí odkaz:
https://doaj.org/article/666e1989505f4ca5ae725e435286a8d0
Publikováno v:
Fractal and Fractional, Vol 1, Iss 1, p 9 (2017)
A common environment in which to place Bessel and circular functions is envisaged. We show, by the use of operational methods, that the Gaussian provides the umbral image of these functions. We emphasize the role of the spherical Bessel functions and
Externí odkaz:
https://doaj.org/article/5067524147894f8990d72d0d1200b371