Browsing by Author "Yarman, T."

Now showing 1 - 20 of 55

Citation Count: 4
Alpha Head on Collision with a Fixed Gold Nucleus, Taking into Account the Relativistic Rest Mass Variation as Implied by Mass-Energy Equivalence
(Polish Acad Sciences inst Physics, 2014) Yarman, Nuh Tolga; Arik, M.; Kholmetskii, A.; Altintas, A. A.; Ozaydin, F.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We reformulate the Rutherford scattering of alpha particle for a head on collision, taking into account the rest mass variation of the particle, as implied by the energy conservation law. Our relativistic reformulation (which includes the energy conservation) constitutes a new example for the breakdown of the Lorentz invariance. Briefly speaking, even at rest or during the whole scattering process, the distance between the alpha particle and the gold nucleus is not invariant but depends on the frame of the observer attached to either object. According to our relativistic reformulation, we also provide a new set of Lorentz transformations.
Citation Count: 2
Apparent paradoxes in classical electrodynamics: a fluid medium in an electromagnetic field
(Iop Publishing Ltd, 2008) Yarman, Nuh Tolga; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
In this paper we analyse a number of teaching paradoxes of classical electrodynamics, dealing with the relativistic transformation of energy and momentum for a fluid medium in an external electromagnetic field. In particular, we consider a moving parallel plate charged capacitor, where the electric attraction of its plates is balanced by the pressure of gas convicted between the plates.
Citation Count: 6
Apparent paradoxes in classical electrodynamics: relativistic transformation of force
(Iop Publishing Ltd, 2007) Yarman, Nuh Tolga; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
In this paper, we analyse a number of paradoxical teaching problems of classical electrodynamics, dealing with the relativistic transformation of force for complex macro systems, consisting of a number of subsystems with nonzero relative velocities such as electric circuits that change their shape in the course of time.
Citation Count: 1
Bound States of Light Hydrogen-Like Atoms and the Possibility of Cold Nuclear Transformations
(Walter de Gruyter Gmbh, 2018) Yarman, Nuh Tolga; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We point out that numerous experimental facts dealing with the observation of nuclear transformations in a condensed matter at room temperature remain totally unexplained till date. In the present article we open up a principal way to understand such phenomena in the framework of pure bound field theory (PBFT) that we developed earlier (e.g. Kholmetskii AL. et al. Eur. Phys. J. Plus 2011;12633, Eur. Phys. J. Plus 2011;12635). In this theory, we explicitly take into account the non-radiating nature of the electromagnetic field of quantum bound particles in stationary states, which leads to the corresponding corrections of basic equations of atomic physics, with further elimination of the available subtle deviations between experimental and theoretical data in precise physics of light hydrogen-like atoms. In the present paper we have once more analysed the principal prediction of PBFT, which allows the existence of the second stationary energy state in the bound system "proton plus electron" (next to the usual hydrogen atoms). This new stationary state is characterised by the unusually small averaged radius of about 2 alpha(2)r(B) approximate to 5 fm (where r(B) is the Bohr radius, and a is the fine structure constant), and a huge (in the atomic scale) value of the binding energy about -255 keV. We named this bound system as the "neutronic hydrogen", because in many processes of its interaction with matter, it is practically indistinguishable from the neutron. The latter circumstance opens up the principal way to understand numerous puzzling facts of low-temperature nuclear synthesis.
Citation Count: 2
Classical electrodynamics in material media and relativistic transformation of magnetic dipole moment
(Springer Heidelberg, 2016) Yarman, Nuh Tolga; Missevitch, O. V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We consider the relativistic transformation of the magnetic dipole moment and disclose its physical meaning, shedding light on the related difficulties in the physical interpretation of classical electrodynamics in material media.
Citation Count: 4
Comment on 'Correct interpretation of two experiments on the transverse Doppler shift'
(Iop Publishing Ltd, 2014) Yarman, Nuh Tolga; Missevitch, O. V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We disclose a number of errors in the paper by Zanchini (2012 Phys. Scr. 86 015004) in his attempt to re-interpret the Mossbauer experiments in rotating systems and to put in doubt the reality of the time dilation effect in special relativity. We show that the common interpretation of this kind of experiment is quite correct and once more pay attention to the presence of an additional (to the relativistic dilation of time) component to the relative energy shift between emission and absorption lines detected in our recent experiment on this subject.
Citation Count: 1
Comparison of traditional and synchrotron beam methodologies in Mossbauer experiments in a rotating system
(int Union Crystallography, 2021) Yarman, Nuh Tolga; Yarman, T.; Yarman, O.; Arik, M.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
Recent Mossbauer experiments in a rotating system reported by others in the literature have involved the application of synchrotron radiation onto a spinning semi-circular resonant absorber. Here, the physical interpretation of these methodologies, and their alleged performance improvement, is analyzed in the light of our own team's past experience based instead on the traditional laboratory setup. It is shown that a number of fundamental shortcomings in the approach reported in the literature deprives it of any practical significance with respect to the improvement of the technique of Mossbauer rotor experiments with a synchrotron source. It is concluded that, at present, only Mossbauer experiments relying on an ordinary compact source of resonant radiation and a resonant absorber both fixed on the rotor promise to provide crucial information with respect to the physical origin of the observed energy shift between emitted and absorbed resonant radiation in a rotating system.
Citation Count: 8
Continuity equations for bound electromagnetic field and the electromagnetic energy-momentum tensor
(Iop Publishing Ltd, 2011) Yarman, Nuh Tolga; Missevitch, O. V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We analyze the application of the Poynting theorem to the bound (velocity-dependent) electromagnetic (EM) field and show that an often-used arbitrary elimination of the term of self-interaction in the product j.E (where j is the current density and E the electric field) represents, in general, an illegitimate operation, which leads to incorrect physical consequences. We propose correct ways of eliminating the terms of self-interaction from the Poynting theorem to transform it into the form that is convenient for problems with bound EM field, which yield the continuity equations for the proper EM energy density, the interaction part of EM energy density and the total EM energy density of bound fields, respectively. These equations indicate the incompleteness of the common EM energy-momentum tensor, and in our analysis, we find a missed term in its structure, which makes its trace non-vanished. Some implications of these results are discussed, in particular, in view of the notion of EM mass of charged particles.
Citation Count: 2
Continuity equations for the bound electromagnetic field
(Iop Publishing Ltd, 2015) Yarman, Nuh Tolga; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We continue to analyze the Poynting theorem for the bound (velocity-dependent) electromagnetic (EM) field, initiated in our earlier paper (A L Kholmetskii et al 2011 Phys. Scr. 83 055406), and show that the character of the flow of EM energy substantially depends on the question of whether a bound EM field delivers the work to moving charged particles, or not. The latter case corresponds to the situation where the system of charged particles uniformly moves in space (which implies the presence of some forces of non-EM origin, which counteract EM interaction), and the entire EM energy density rigidly propagates in space along with the given system of charges. In the general case of arbitrary motion of interacting charged particles, the flow of EM energy is guided by the interactional part of the Poynting vector. A transition between these limited cases is explored, and physical implications of the obtained results are discussed.
Citation Count: 0
Critical state and low-field electrodynamics in LaO_0.85F_0.15FeAs superconductor polycrystals
(Pleiades Publishing inc, 2015) Yarman, Nuh Tolga; Kholmetskii, A. L.; Mashlan, M.; Yarman, T.; Aldushchenkov, A. V.; Okunev, I. S.; Makhnach, L. V.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
The penetration of a weak magnetic field into LaO0.85F0.15FeAs polycrystalline superconductors is investigated using two mutually complementing techniques: measurement of the higher harmonics of nonlinear magnetization and the current-voltage characteristics. The dependences of the critical current density and resistivity on the temperature and magnetic field strength are determined. The results confirm the theory of the critical state in the low-field electrodynamics of a Josephson medium. The universality of this theoretical concept is demonstrated for a new class of ceramic superconductors.
Citation Count: 5
Different paths to some fundamental physical laws: relativistic polarization of a moving magnetic dipole
(Iop Publishing Ltd, 2010) Yarman, Nuh Tolga; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
In this paper we consider the relativistic polarization of a moving magnetic dipole and show that this effect can be understood via the relativistic generalization of Kirchhoff's first law to a moving closed circuit with a steady current. This approach allows us to better understand the law of relativistic transformation of four-current density when it is applied to the moving macroscopic magnetic dipoles.
Citation Count: 1
Doppler effect in rotating systems and Mossbauer rotor experiments
(Academic Press inc Elsevier Science, 2021) Yarman, Nuh Tolga; Yarman, T.; Yarman, O.; Arik, M.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We address once more the problem of the physical interpretation of the Mossbauer effect in a rotating system in the view of the recently discovered extra energy shift (EES) between emitted and absorbed resonant radiation, which emerges in addition to the usual second order Doppler shift for an orbiting absorber. We highlight that both fractional components of the total energy shift have the same sign and correspond to the blueshift of the resonant radiation propagating from the rotational axis to the rotor rim. We indicate a possible way of understanding the origin of the EES in terms of combining metric effects in rotating systems with the quantum mechanical description of resonant nuclei confined in crystal cells by taking into account the recoil-free essence of the Mossbauer effect, where no energy is transmitted to the source (absorber) during the emission (absorption) of resonant radiation. (C) 2021 Elsevier Inc. All rights reserved.
Citation Count: 4
Elaborations on Mossbauer rotor experiments with synchrotron radiation and with usual resonant sources
(int Union Crystallography, 2018) Yarman, Nuh Tolga; Yarman, T.; Yarman, O.; Arik, M.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
A comparative analysis of Mossbauer experiments in a rotating system between a recent application using synchrotron radiation [Friedman et al. (2016). Eur. Phys. Lett.114, 50010; Friedman et al. (2017). J. Synchrotron Rad.24, 661-666] and usual sources of resonant radiation is carried out. The principal methodological difference between these experiments can be related to the fact that in the former set of experiments the source of the resonant radiation rests in a laboratory frame whereas for the latter set of experiments the source is attached to a rotating system. It is concluded that the utilization of ordinary Mossbauer sources remains the most promising path for further research appertaining to the Mossbauer effect in rotating systems.
Citation Count: 3
Electric/magnetic dipolein an electromagnetic field: force, torque and energy
(Springer Verlag, 2014) Yarman, Nuh Tolga; Missevitch, O.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
In this paper we collect the relativistic expressions for the force, torque and energy of a small electric/magnetic dipole in an electromagnetic field, which we recently obtained (A.L. Kholmetskii et al., Eur. J. Phys. 33, L7 (2011), Prog. Electromagn. Res. B 45, 83 (2012), Can. J. Phys. 9, 576 (2013)) and consider a number of subtle effects, characterized the behavior of the dipole in an external field, which seem interesting from the practical viewpoint. © 2014, Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg.
Citation Count: 0
Electrically bound quantum particles and Pure Bound Field Theory: precise physics of simple atoms and new bound state of the proton and electron
(Amer inst Physics, 2012) Yarman, Nuh Tolga; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We present basic ideas of Pure Bound Field Theory (PBFT) we developed earlier (A. L. Kholmetskii et al. Eur. Phys. J. Plus, 126 (2011) 33; Eur. Phys. J. Plus, 126 (2011) 35)), which explicitly takes into account the non-radiating nature of electromagfnetic field of quantum bound partictes, and which allows eliminating the available subtle deviations between experimental and theoretical data in precise physics of simple atoms. We show that the specific corrections of PBFT, being introduced into the basic equations of atomic physics, allow two different solutions for stationary energy states for electrically bound system "proton plus electron". One of them corresponds to the usual hydrogen atom, whereas another stationary state is characterized by the radius of stationary orbit about 5 fm and the binding energy about -0.511 Mev.
Citation Count: 3
Electromagnetic energy of electric and magnetic dipoles
(Canadian Science Publishing, 2013) Yarman, Nuh Tolga; Missevitch, O. V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We derive a novel expression for the relativistic energy of electric and magnetic dipoles in an external electromagnetic field and discuss its implications. In particular, we find the relativistic dependence of the energy of a dipole on its velocity, v, and show that in the most convenient presentation of the energy (when the proper electric (p(o)) and magnetic (m(o)) dipole moments are involved, whereas the electric (E) and magnetic (B) fields are defined in the laboratory frame), its value essentially depends on the orientation of the velocity, v, with respect to vectors p(o), E, and m(o), B. To better understand the relativistic behavior of the energy of electric and magnetic dipoles, we introduce the notion of "latent" momentum of an electric dipole, in addition to the known concept of "hidden" momentum of a magnetic dipole. We finally show that the contribution of energy terms related to "hidden" and "latent" momenta of an electric or magnetic dipole is important in the relativistic case.
Citation Count: 12
Electromagnetic force on a moving dipole
(Iop Publishing Ltd, 2011) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We analyse the force acting on a moving dipole due to an external electromagnetic field and show that the expression derived in Vekstein (1997 Eur. J. Phys. 18 113) is erroneous and suggest the correct equation for the description of this force. We also discuss the physical meaning of the relativistic transformation of current for a closed circuit and carry out the analysis of a number of particular physical problems, which are important from the educational viewpoint.
Citation Count: 5
Energy flow in a bound electromagnetic field: resolution of apparent paradoxes
(Iop Publishing Ltd, 2008) Yarman, Nuh Tolga; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
In this paper, we present a resolution of apparent paradoxes formulated in (Kholmetskii A L 2006 Apparent paradoxes in classical electrodynamics: the energy-momentum conservation law for a bound electromagnetic field Eur. J. Phys. 27 825-38; Kholmetskii A L and Yarman T 2008 Apparent paradoxes in classical electrodynamics: a fluid medium in an electromagnetic field Eur. J. Phys. 29 1127) and dealing with the energy flux in a bound electromagnetic field.
Citation Count: 10
Energy-momentum conservation in classical electrodynamics and electrically bound quantum systems
(Iop Publishing Ltd, 2010) Yarman, Nuh Tolga; Missevitch, O. V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We call attention to the well-known fact that the electromagnetic (EM) field consists of bound and radiation components, and only their sum provides for the implementation of energy-momentum conservation for interacting classical charges. In this context, we then focus our attention on quantum systems of electrically bound charges, which do not radiate in the stationary energy states and thus their EM field comprises only the bound component. The non-applicability of Maxwell's equations to quantum mechanics does not permit, in general, ignoring the problem of recovering the energy-momentum conservation for such pure bound EM field systems, and we explore this problem within the Schrodinger-Dirac quantization scheme.
Citation Count: 10
Force law in material media, hidden momentum and quantum phases
(Academic Press inc Elsevier Science, 2016) Yarman, Nuh Tolga; Missevitch, Oleg V.; Yarman, T.; Enerji Sistemleri Mühendisliği / Energy Systems Engineering
We address to the force law in classical electrodynamics of material media, paying attention on the force term due to time variation of hidden momentum of magnetic dipoles. We highlight that the emergence of this force component is required by the general theorem, deriving zero total momentum for any static configuration of charges/currents. At the same time, we disclose the impossibility to add this force term covariantly to the Lorentz force law in material media. We further show that the adoption of the Einstein-Laub force law does not resolve the issue, because for a small electric/magnetic dipole, the density of Einstein-Laub force integrates exactly to the same equation, like the Lorentz force with the inclusion of hidden momentum contribution. Thus, none of the available expressions for the force on a moving dipole is compatible with the relativistic transformation of force, and we support this statement with a number of particular examples. In this respect, we suggest applying the Lagrangian approach to the derivation of the force law in a magnetized/polarized medium. In the framework of this approach we obtain the novel expression for the force on a small electric/magnetic dipole, with the novel expression for its generalized momentum. The latter expression implies two novel quantum effects with non-topological phases, when an electric dipole is moving in an electric field, and when a magnetic dipole is moving in a magnetic field. These phases, in general, are not related to dynamical effects, because they are not equal to zero, when the classical force on a dipole is vanishing. The implications of the obtained results are discussed. (C) 2016 Elsevier Inc. All rights reserved.