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The formation of correlated states and optimization of the tunnel effect for low-energy particles under nonmonochromatic and pulsed action on a potential barrier

  • Atoms, Molecules, Optics
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Abstract

We consider peculiarities of the formation of a coherent correlated state (CCS) of a low-energy particle under frequency modulation of parameters of a harmonic oscillator that contains this particle by a broadband nonmonochromatic or asymmetric pulsed action. It is shown that in the case of modulation with frequency-normalized intensity, the maximum efficiency of CCS formation corresponds to a narrow-band action, while broadband modulation is optimal for the action with a constant spectral density. As in the case of monochromatic modulation, the maximum correlation coefficient, |r|max, under the nonmonochromatic action corresponds to parametric resonance at frequency Ω ≈ 2ω0. Under a pulsed action, the maximum efficiency of CCS formation and, hence, the maximum probability of the tunnel effect, correspond to pulsed modulation with a short leading edge and a long trailing edge. In particular, under the action of a pulsed magnetic field with an amplitude of 10 kOe and the leading edge duration of 2 × 10–7 s on a gas with deuterium ions, a CCS can be formed with the correlation coefficient |r|max ≈ 0.9998, for which the tunneling effect probability under the dd interaction at temperature T ≈ 300–500 K increases from D r = 0 ≈ 10−80 to \({D_{|r{|_{\max }} = 0.9998}} \approx 0.1\). This process can occur in a gas with particle number density n < n cr ≈ 1017 cm−3. The method of CCS formation makes it possible to explain the results of an experiment in which substantial isotope changes were detected when a pulsed electric current and magnetic-field generation occurred.

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Authors and Affiliations

  1. Taras Shevchenko National University, Kiev, 01601, Ukraine

    V. I. Vysotskii & M. V. Vysotskyy

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  1. V. I. Vysotskii
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  2. M. V. Vysotskyy
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Correspondence to V. I. Vysotskii.

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Original Russian Text © V.I. Vysotskii, M.V. Vysotskyy, 2015, published in Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2015, Vol. 148, No. 4, pp. 643–657.

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Vysotskii, V.I., Vysotskyy, M.V. The formation of correlated states and optimization of the tunnel effect for low-energy particles under nonmonochromatic and pulsed action on a potential barrier. J. Exp. Theor. Phys. 121, 559–571 (2015). https://doi.org/10.1134/S1063776115100222

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