226 research outputs found

    Poluklasična teorija spontane emisije zračenja

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    A nonrelativistic semiclassical theory of the radiation reaction interaction is developed. It is applied to the spontaneous emission of radiation from excited states of a hydrogen-like atom.Razvijena je nerelativistička poluklasična teorija radijacijske sile zračenja. Primjenjena je na opis spontane emisije zračenja s pobuđenog stanja atoma poput vodikovog

    Poluklasična teorija spontane emisije zračenja

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    A nonrelativistic semiclassical theory of the radiation reaction interaction is developed. It is applied to the spontaneous emission of radiation from excited states of a hydrogen-like atom.Razvijena je nerelativistička poluklasična teorija radijacijske sile zračenja. Primjenjena je na opis spontane emisije zračenja s pobuđenog stanja atoma poput vodikovog

    Analiza prijenosa energije u međudjelovanju čestice i polja

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    In this work we have analyzed dynamics of a particle in the one dimensional model of the plane electromagnetic wave. Our particular interest was to show that classical theory can describe this dynamics very well, and gives the correct momentum distribution of particle which depends on the frequency of the field as well as on its amplitude.U ovom radu smo analizirali interakciju čestice i ravnog elektromagnetskog vala. Koristili smo jednodimenzionalnu aproksimaciju. Pokazali smo da u takvoj aproksimaciji, klasična teorija u potpunosti opisuje prijenos energije, te daje respodjelu impulsa koja ovisi prvenstveno o frekvenciji polja

    Princip neođredenosti u klasičnoj mehanici: primjena na kolinearne sudare

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    Classical theory of collisions is formulated which also includes uncertainty principle. The theory is used for the calculation of transition probabilities in the collinear He-H2 collision, and the results are compared with quantum calculations. Very good agreement is found.Klasična teorija sudara formulirana je uz uvažavanje principa neodredenosti. Izračunali smo prijelazne vjerojatnosti za kolinearni sudar He-H2 i usporedili rezultate s kvantnim proračunima. PronaŔli smo vrlo dobro slaganje

    Analiza prijenosa energije u međudjelovanju čestice i polja

    Get PDF
    In this work we have analyzed dynamics of a particle in the one dimensional model of the plane electromagnetic wave. Our particular interest was to show that classical theory can describe this dynamics very well, and gives the correct momentum distribution of particle which depends on the frequency of the field as well as on its amplitude.U ovom radu smo analizirali interakciju čestice i ravnog elektromagnetskog vala. Koristili smo jednodimenzionalnu aproksimaciju. Pokazali smo da u takvoj aproksimaciji, klasična teorija u potpunosti opisuje prijenos energije, te daje respodjelu impulsa koja ovisi prvenstveno o frekvenciji polja

    Study of Collinear Collision in Impulsive Model

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    Exact quantum solution of the collinear collision problem is found in the impulsive model. The transition probabilities compare well with those for real systems, except when multiple collisions become important

    Princip neođredenosti u klasičnoj mehanici: primjena na kolinearne sudare

    Get PDF
    Classical theory of collisions is formulated which also includes uncertainty principle. The theory is used for the calculation of transition probabilities in the collinear He-H2 collision, and the results are compared with quantum calculations. Very good agreement is found.Klasična teorija sudara formulirana je uz uvažavanje principa neodredenosti. Izračunali smo prijelazne vjerojatnosti za kolinearni sudar He-H2 i usporedili rezultate s kvantnim proračunima. PronaŔli smo vrlo dobro slaganje

    Analytic pulse design for selective population transfer in many-level quantum systems: maximizing amplitude of population oscillations

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    State selective preparation and manipulation of discrete-level quantum systems such as atoms, molecules or quantum dots is a the ultimate tool for many diverse fields such as laser control of chemical reactions, atom optics, high-precision metrology and quantum computing. Rabi oscillations are one of the simplest, yet potentially quite useful mechanisms for achieving such manipulation. Rabi theory establishes that in the two-level systems resonant drive leads to the periodic and complete population oscillations between the two system levels. In this paper an analytic optimization algorithm for producing Rabi-like oscillations in the general discrete many-level quantum systems is presented.Comment: Published in Phys.Rev.A. This is the final published versio
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