All experimental data in atomic physics proved that, emission and absorption processes are completely reverses to each other. Emitted photon is as same as absorbed; excited atom returns to its ground state without any residual tells us there is an action has been done. While studying and interpreting the process of absorption spectra, there is a question that remains unanswered till now, which is; when the electron returns to the ground state, it re-emits the same absorbed photon, but where did this photon go? If it was re-emitted, then the observed absorbed spectrum should appear pale, not completely dark line which mean it has been disappeared. In order to be able to say that the electron lost its energy while returning to its ground state without re-emitting the same absorbed photon or by emitting more than one photon, we must introduce theoretically new energy levels to be attributable to the answer to the question. In this article, we present a mathematical proposal that leads to the inference of new quantized energy levels, where an electron can move among them thermally or spectroscopically. All elements' ionization energy has been proved by using this new mathematical proposal led to results, which are in agreement with National Institute of Standards and Technology (NIST) data. Not only entropy inside the atom has been achieved but also, the disappeared absorbed photon has been explained. At last, our mathematical proposal connected between modern physics and classical physics.
All experimental data in atomic physics proved that, emission and absorption processes are completely reverses to each other. Emitted photon is as same as absorbed; excited atom returns to its ground state without any residual tells us there is an action has been done. While studying and interpreting the process of absorption spectra, there is a question that remains unanswered till now, which is; when the electron returns to the ground state, it re-emits the same absorbed photon, but where did this photon go? If it was re-emitted, then the observed absorbed spectrum should appear pale, not completely dark line which mean it has been disappeared. In order to be able to say that the electron lost its energy while returning to its ground state without re-emitting the same absorbed photon or by emitting more than one photon, we must introduce theoretically new energy levels to be attributable to the answer to the question. In this article, we present a mathematical proposal that leads to the inference of new quantized energy levels, where an electron can move among them thermally or spectroscopically. All elements' ionization energy has been proved by using this new mathematical proposal led to results, which are in agreement with National Institute of Standards and Technology (NIST) data. Not only entropy inside the atom has been achieved but also, the disappeared absorbed photon has been explained. At last, our mathematical proposal connected between modern physics and classical physics.
This paper re-examines the mechanism of electron motion inside atoms and the causes of photon radiation and photon absorption, abandoning the inherent cognition of fixed electron orbits and quantum transitions in traditional atomic physics. It clarifies that electrons have no physical fixed orbits; orbits are only imaginary concepts constructed for convenience of description, not objective physical realities. With mass, electrons possess inertia and kinetic energy. Under the three-force equilibrium of Coulomb force, electromagnetic force and inertial effect, electrons naturally move in elliptical trajectories rather than regular circles. When an electron moves along an elliptical trajectory, it naturally passes through low-energy regions near the atomic nucleus and high-energy regions far from the nucleus. This change in position arises entirely from its own inertia, involving only the conversion between kinetic energy and potential energy. The electron neither gains nor loses total energy, so it emits no photons and undergoes no energy-level change. An electron loses total energy when emitting a photon outward, and transitions smoothly and continuously to a lower overall motion range under mechanical equilibrium and inertia. Meanwhile, an electron can also absorb external photons and gain energy; its total energy increases, and it similarly expands smoothly to a higher motion range. Photon energy is indivisible and can only be emitted or absorbed as a complete unit. This is the fundamental reason why atoms show discrete emission and absorption spectra. Electron motion is entirely smooth and continuous; instantaneous quantum transitions assumed in traditional physics do not exist. Based on classical mechanics and energy conservation, this paper unifies the laws of macroscopic celestial bodies and microscopic particles, and reconstructs an atomic motion model closer to the essential nature of physics.
Introduction The preceding chapters have focused on atomic transitions induced by applied radiation. That is, there is an optical field illuminating the atoms, and their response is calculated. It is implicitly assumed that an excited atom left alone will spontaneously return to the ground state, and conserve energy by emitting light that satisfies E 2 − E 1 = ħ ω 21 in accordance with the Planck and Bohr pictures. But this spontaneous emission process is not addressed quantitatively in these earlier chapters. Spontaneous emission is one of the most pervasive phenomena of atomic physics, and yet its origins remain among the least well-understood. The number of misconceptions is enormous, and they are to be found in textbooks, journal articles, and lecture notes. Because the natural decay of an excited atom adds energy to what is usually an empty mode of the electromagnetic field, the process is fundamentally quantum mechanical. Classical or even semi-classical descriptions cannot be assured to give correct answers. This is not to say that such discussion is to be avoided, but only that caution is needed in interpreting the results. Toward the end of the nineteenth century, many experimental results made it clear that classical mechanics needed to be supplemented by new theories. The first venture into the new physics was Planck's hypothesis that the energy of classical radiating oscillators like those discussed in Chap. 1 would have to be quantized into integer multiples of ħ ω. This notion led to his famous formula for the spectrum of thermal radiation from a non-reflective object (black body), and this formula describes a radiation field in thermodynamic equilibrium with its environment. The result of Planck's hypothesis in the context of thermal equilibrium plays a vital role in the discussion of spontaneous emission. Einstein A - and B -coefficients Soon after Bohr proposed a model of atomic structure consisting of discrete energy levels, connected by radiation whose energy satisfied Δ E = ħω when atoms made transition between them, Einstein published the first serious attempt to connect the absorption and emission processes. Absorption, he reasoned, could occur only in the presence of applied radiation, whereas spontaneous decay occurred without the application of any field.
A conceptual model is developed for the processes of photon emission and absorption. While the emission of light is well known in terms of quantum changes in energy levels of an electron, the fundamental physical processes are incompletely understood. How exactly does the photon emerge from the electron? How is light absorbed by matter? These foundational conceptual questions are the focus of this paper. We show that it is possible to develop new insights into this problem, based on the cordus model, which is a non-local hidden-variable solution. We start by predicting the structures of the photon and electron, both the internal geometric substructures, and their discrete fields. The model predicts that there are different mechanisms for the fields of the photon and electron, and uses this to explain the characteristics of the evanescent and electric fields. We then show how the bonding constraints arise on the electron, and how these require the electron to emit its excess energy. The process whereby a photon is created and separated out of the electron is identified. Photon emission and absorption thus result from an interaction between the discrete field elements and the internal structures. Emission is thus an escapement mechanism whereby matter particules that are overprescribed in position can get rid of that energy.
The spontaneous decay of an excited atom by photon emission is one of the most common and elementary physical process present in nature and in laboratories. The decay is random in time with constant probability density, as it can be inferred by the exponential law observed experimentally. Despite the simplicity of the process, in Quantum Mechanics the decay itself is considered a law of nature which is not further analyzed or explained. However it is legitimate to ask for the reason of its randomness and for the dynamics of the atom around the decay. The decay process of an isolated atom is usually assumed to be instantaneous, the so called Quantum jumps. Particular experimental arrangements can widen the duration of the transition from an excited state to the ground state to a finite time. In general this is due to the quantum back action of the detector. The development of Quantum Optics has enormously enriched the possibilities to study in detail the process, and new illuminating insights have been obtained, but the question is still valid and its answer is still elusive. In this paper we analyze the spontaneous decay within the new prospect introduced by a recent model that complete standard Quantum Mechanics in a formalism which is able to describe the dynamics of measurement and of spontaneous decay. Comparison is made with more phenomenological theories, the Quantum Mechanics of open system and the Stochastic wave function model. In the new model the stochastic photon emission by an excited atom is triggered by the vacuum fluctuations. It is suggested how to re-analyze three types of experiments, already realized in many laboratories, in order to reveal the presence and the effect of these fluctuations.
Dad I understand that light is emitted when an atom decays from an excited state to a lower energy state. Feynman That's right. Dad And light consists of particles called photons. Feynman Yes. Dad So the photon ‘particle’ must be inside the atom when it is in the excited state. Feynman Well no. Dad Well how do you explain that the photon comes out of the atom when it was not there in the first place. Feynman (Physics Teacher 1969) I'm sorry. I don't know I can't explain it to you. INTRODUCTION As was stated in Chapter 1, spectroscopy is a study of the interaction of matter with radiation. In order to understand their mutual interaction, we must therefore characterize both radiation and matter. The starting point is quantum mechanics, because the origin of quantum mechanics was based on unexplained phenomena related to both the nature of electromagnetic radiation and that of matter. In fact, quantum mechanics owes its birth to some puzzling results of spectral and other experiments. We may say that “spectroscopy is quantum mechanics in action.” We therefore begin our study of quantum mechanics with a recapitulation of its postulates. An understanding of the postulates is also essential for our development of the time-dependent perturbation theory and also forms the basis for the connection between theory and experiment. Indeed, spectroscopy is the experimental verification of the laws of quantum mechanics. Quantum mechanics is based on a few postulates (from the Latin postulatum ), meaning a truth that does not need any further proof, because it is obvious by itself, and its success lies in the fact that no experiment till date has proved it wrong. There is no agreement of how many axioms one needs to describe the machinery of quantum mechanics; however, the six given below is an acceptable number.
Photon cannot keep itself unchanged from emission to absorption. The information encoded on the photon is also changed due to interaction with environment. There has no definitely demonstration that the photon being absorbed is the original one from ideal light source since the quantum mechanics itself is an indeterminate theory that the physical measurement is only the probability. We divide the change of the photon state into two parts that one can be compensated and the other cannot be compensated. A concept of photon reconstruction is introduced to explain every optical phenomena including Raman scattering, multi-photon absorption, nonlinear phenomena, free electron lasing, quantum entanglement, high order coherence, ghost imaging and the de-phase which result in error bits or information loss in the quantum information process. An experimental result is explained to show that the signal photon can modify the background even the energy of the photon is not enough for absorption in the wide-band gap semiconductor material. The photon-current-voltage curve and dark-current-voltage curve of an absorption, grating, and multiplication InGaAs/InP avalanche photodiode is analyzed to show that 1550nm input light modified the dark background even the applied reverse bias voltage is far below the punch-through voltage. This increase of the dark count directly relates to the input photons at the 1550nm wavelength but is not due to absorption in the absorption layer and insensitive to the applied voltage.