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pro vyhledávání: '"Mugnai, D."'
The experimental evidence of an anomalous behavior in the decay times of Tl$^+$-like impurity centers in alkali-halide crystals has generated a revival of interest with respect to these materials. We discuss here about the possibility that the $A_T$
Externí odkaz:
http://arxiv.org/abs/1403.1067
Autor:
Mugnai, D.
Recently, the use of Bessel beams in evaluating the possibility of using them for a new generation of GPR (ground penetrating radar) systems has been considered. Therefore, an analysis of the propagation of Bessel beam in conducting media is worthwhi
Externí odkaz:
http://arxiv.org/abs/1009.3132
Autor:
Mugnai, D., Spalla, P.
Publikováno v:
Optics Commun. vol. 282, p. 4668-4671 (2009)
The aim of this paper is the study of the propagation of a Bessel beam through two absorbing layers, limited by two different half-spaces. Our approach will be based on the scalar analysis, since this analysis was proved to be an excellent approximat
Externí odkaz:
http://arxiv.org/abs/0909.2734
Autor:
Mugnai, D.
Recently, the use of Bessel beams in evaluating the possibility of using them for a new generation of GPR (ground penetrating radar) systems has been considered. Therefore, an analysis of the propagation of Bessel beam in conducting media is worthwhi
Externí odkaz:
http://arxiv.org/abs/0908.0217
Autor:
Mugnai, D.
Superluminal behavior has been extensively studied in recent years, especially with regard to the topic of superluminality in the propagation of a signal. Particular interest has been devoted to Bessel-X waves propagation, since some experimental res
Externí odkaz:
http://arxiv.org/abs/physics/0603104
Autor:
Mugnai, D., Mochi, I.
Publikováno v:
Phys. Rev. E, vol. 73, 016606 (2006)
The propagation of a Bessel beam (or Bessel-X wave) is analyzed on the basis of a vectorial treatment. The electric and magnetic fields are obtained by considering a realistic situation able to generate that kind of scalar field. Specifically, we ana
Externí odkaz:
http://arxiv.org/abs/physics/0506120
Autor:
Mugnai, D.
Publikováno v:
Oprics. Comm. vol. 207, pp.95-99 (2002)
The oblique incidence of a Bessel beam on a dielectric slab with refractive index n1 surrounded by a medium of a refractive index n>n1 may be studied simply by expanding the Bessel beam into a set of plane waves forming the same angle with the axis o
Externí odkaz:
http://arxiv.org/abs/physics/0505167
Publikováno v:
Atti Fondazione Giorgio Ronchi, vol. 53, p. 777 (1998)
The tunneling time is here investigated by means of an electromagnetic model, for a system where a gap, between two parallel planes, acts as a classically-forbidden region for an impinging pulse with incidence angle larger than the critical angle. In
Externí odkaz:
http://arxiv.org/abs/physics/0111192
Autor:
Mugnai, D.
Publikováno v:
Optics Commun. vol.188, p. 17 (2001)
The motion of an electromagnetic wave, through a classically-forbidden region, has recently attracted renewed interest because of its implication with regard to the theoretical and experimental problems of superluminality. From an experimental point
Externí odkaz:
http://arxiv.org/abs/physics/0111185
Autor:
Mugnai, D.
Publikováno v:
Opt. Commun., vol. 175, p. 309 (2000)
The tunnel effect is considered here within the framework of electromagnetic propagation. The classical problem of a plane gap of dielectric, surrounded on both sides by a medium with larger refraction index, is studied in the case in which an electr
Externí odkaz:
http://arxiv.org/abs/physics/0111152