2021
DOI: 10.3390/molecules26020308
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Possible Mechanisms of String Formation in Complex Plasmas at Elevated Pressures

Abstract: Possible mechanisms of particle attraction providing formation of the field aligned microparticle strings in complex plasmas at elevated gas pressures are theoretically investigated in the light of the Plasmakristall-4 (PK-4) experiment on board the International Space Station. The particle interaction energy is addressed by two different approaches: (i) using the dynamically screened wake potential for small Mach numbers derived by Kompaneets et al., in 2016, and (ii) introducing effect of polarization of the… Show more

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Cited by 16 publications
(13 citation statements)
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“…Thus, with a change of F ext or l i , a positive feedback effect is observed between the Q k and L. An increase in l i leads to an increase of the screening length and Coulomb forces; therefore, the chain is rearranged. This is consistent with the experimental results presented in reference [28], where it was shown that, at lower gas pressures, the interparticle distance increases. It is also worth noting that, for every chosen value of l i , the dust particles are equidistant for E = 0.…”
Section: Influence Of the Ion Mean Free Pathsupporting
confidence: 93%
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“…Thus, with a change of F ext or l i , a positive feedback effect is observed between the Q k and L. An increase in l i leads to an increase of the screening length and Coulomb forces; therefore, the chain is rearranged. This is consistent with the experimental results presented in reference [28], where it was shown that, at lower gas pressures, the interparticle distance increases. It is also worth noting that, for every chosen value of l i , the dust particles are equidistant for E = 0.…”
Section: Influence Of the Ion Mean Free Pathsupporting
confidence: 93%
“…Thus, with a change of Fext or li, a positive feedback effect is observed between the Qk and L. An increase in li leads to an increase of the screening length and Coulomb forces; therefore, the chain is rearranged. This is consistent with the experimental results presented in reference [28], where it was shown that, at lower gas Figure 5b shows the dependence of L = L 1-2 = L 2-3 on l i . An increase of l i leads to a linear increase of L. Taking into account the increase of Q k , it can be stated that L increases due to the increase of the Coulomb repulsion forces.…”
Section: Influence Of the Ion Mean Free Pathsupporting
confidence: 93%
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