Труды сотрудников ИВМ СО РАН

/ I. V. Krasnov, L. P. Kamenshchikov // Laser Phys. - 2018. - Vol. 28, Is. 10. - Ст. 105701, DOI 10.1088/1555-6611/aaceee. - Cited References:28 . - ISSN 1054-660X. - ISSN 1555-6611РУБ Optics + Physics, Applied

Аннотация: We demonstrate that the earlier suggested new all-optical method of creating long-term small (containing two or three particles) ion clusters using the rectified optical forces (RFs) can be used to create cold trapped Coulomb crystals (consisting of several tens of resonant ions). The results of the supercomputer simulations of the dynamics of a mercury ion cloud in a polychromatic optical superlattice (induced by RFs) are presented and analysed. Such a cloud (including 49 ions) in the absence of the optical field expands rapidly (during the characteristic time of the order of 10(-4) s) as a result of the Coulomb explosion. It is shown that the polychromatic optical field can result in the 'quenching' of the Coulomb explosion and crystallisation of the ion cloud: creation of a quasi-2D array of ordered and strongly coupled cold ions (with the Coulomb coupling parameter Gamma similar to 10 and temperature similar to 10(-3) K). The mean destruction time of the studied metastable crystal is of the order of 10 s. Moreover, the central core of the ion cloud can retain its crystalline configuration for a much longer time.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Inst Computat Modeling, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Krasnov, I. V.; Kamenshchikov, L. P.