261 research outputs found

    Electromagnetic waves in an axion-active relativistic plasma non-minimally coupled to gravity

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    We consider cosmological applications of a new self-consistent system of equations, accounting for a nonminimal coupling of the gravitational, electromagnetic and pseudoscalar (axion) fields in a relativistic plasma. We focus on dispersion relations for electromagnetic perturbations in an initially isotropic ultrarelativistic plasma coupled to the gravitational and axion fields in the framework of isotropic homogeneous cosmological model of the de Sitter type. We classify the longitudinal and transversal electromagnetic modes in an axionically active plasma and distinguish between waves (damping, instable or running), and nonharmonic perturbations (damping or instable). We show that for the special choice of the guiding model parameters the transversal electromagnetic waves in the axionically active plasma, nonminimally coupled to gravity, can propagate with the phase velocity less than speed of light in vacuum, thus displaying a possibility for a new type of resonant particle-wave interactions.Comment: 19 pages, 9 figures, published versio

    Термовакуумно-напыленные пленки 1Н-индол-3К-(фенил)-альдонитрона - сухопроявляемый материал для лазерной микролитографии

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    It was experimentally showed that high quality high-gloss films of amorphous type are formed at vacuum deposition of 1H-indole-3N-(phenyl)-aldonitrone. At laser exposure (λ = 351 nm) of films latent image of the mask is formed, which is manifested by vacuum radiation of quartz halogen lamp. The films with the thickness of 1,3±0,2 μm mask phosphorus and boron ions with the energy up to 1 000 eV (at implantation dozes 0,10-0,12 μK1/cm2) in silicon technology of obtaining of BIS.Экспериментально показано, что при вакуумном испарении 1Н-индол-3N-(фенил)-альдонитрона образуются высококачественные глянцевые пленки аморфного типа. При лазерном экспонировании (λ = 351 нм) полученных пленок образуется скрытое изображение маски, которое проявляется вакуумным излучением кварце-во-галогенных ламп КГМ-1. Пленки толщиной 1,3±0,2 мкм маскируют ионы фосфора и бора с энергией до 1 000 эВ (при дозах 0,10-0,12 мКл/см2) в кремниевой технологии получения БИС
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