ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Element separation effects in the boundary region of a plasma surrounded by neutral gas (1976)
    Springer
    Astrophysics and space science 40 (1976), S. 225-229 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A one-dimensional model is being considered where a fully ionized plasma is separated from a neutral gas by a homogeneous magnetic field directed along the plasma boundary. The plasma and the neutral gas consist of two different types of ions and neutral particles. In a stationary state the outflux of plasma by diffusion across the magnetic field is compensated by an influx of neutrals which are ionized in a partially ionized boundary region. It is found that the ratio between the ion densities in the fully ionized region will in general differ from the density ratio of the two types of neutrals being present in the gas region. This provides a separation mechanism with applications both to cosmical and laboratory plasmas, such as in the following cases: (i) The abundance anomalies in magnetic variable stars and in the solar wind. (ii) Separation processes of non-identical ions and neutral atoms in gas blanket systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00651200
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Matter-antimatter boundary layers with a magnetic neutral sheet (1978)
    Springer
    Astrophysics and space science 53 (1978), S. 459-465 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An earlier model of matter-antimatter boundary layers has been extended to include a sheet with a reversed magnetic field. The derived layer thickness is largely unaffected by a magnetic field-reversal, provided that the width of the corresponding magnetic neutral sheet becomes substantially smaller than the layer thickness. This condition is likely to be satisfied within parameter ranges of cosmical interest. The present model represents a crude first approach, and a more rigorous treatment of a quasi-neutral ambiplasma is desirable which also includes the problem of stability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00645033
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Plasma-neutral gas interaction in cosmical physics (1978)
    Springer
    Astrophysics and space science 55 (1978), S. 25-37 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The influence of plasma-neutral gas interaction on cosmical phenomena is discussed. with applications to steady and non-steady phenomena in cool interstellar and interplanetary clouds, in the photospheres, chromospheres, prominences and filaments of the Sun and other stars, in the planetary ionospheres, as well as in certain cosmogonical theories Special attention is given to filamentary structures of hot plasmas embedded in cooler regions, and to the internal properties of cool partially ionized clouds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00642577
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Velocity limitation of a neutral dust cloud colliding with a magnetized plasma (1988)
    Springer
    Astrophysics and space science 144 (1988), S. 31-42 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The problem is considered of a cloud of neutral dust moving into a cloud of static plasma which is confined in a magnetic field. Earlier experiments with rotating plasma devices and plasma guns on critical velocity limitation suggest that such limitation could also arise in the case of plasma-neutral dust interaction in cosmos. Nevertheless further analysis is required to provide a clear picture of the relations between the cosmical and laboratory conditions for plasma-neutral gas and plasma-neutral dust interaction. In particular this applies to the question how to relate the experiments, which are largely in the plasma-physical MHD range, to the cosmical interaction which appears to be mainly governed by kinetic effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00793171
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Beta limitation of matter-antimatter boundary layers (1988)
    Springer
    Astrophysics and space science 140 (1988), S. 77-83 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A model has earlier been proposed for a boundary layer which separates a cloud of matter from one of antimatter in a magnetized ambiplasma. In this model steady pressure equilibrium ceases to exist when a certain beta limit is exceeded. The latter is defined as the ratio between the ambiplasma and magnetic field pressures which balance each other in the boundary layer. Thus, at an increasing density, the high-energy particles created by annihilation within the layer are ‘pumped up’ to a pressure which cannot be balanced by a given magnetic field. The boundary layer then ‘disrupts’. The critical beta limit thus obtained falls within the observed parameter ranges of galaxies and other large cosmical objects. Provided that the considered matter-antimatter balance holds true, this limit is thus expected to impose certain existence conditions on matter-antimatter boundary layers. Such a limitation may apply to certain cosmical objects and cosmological models. The maximum time-scale for the corresponding disruption development has been estimated to be in a range from about 10−4 to 102s for boundary layers at ambiplasma particle densities in the range from 104 to 10−2 m−3, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00643531
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Screw and flute instabilities in a low-pressure plasma (1963)
    Springer
    Atomic energy 14 (1963), S. 72-82 
    Details
    ISSN: 1573-8205
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01126604
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Problems of matter-antimatter boundary layers (1977)
    Springer
    Astrophysics and space science 46 (1977), S. 61-71 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper outlines the problems of the quasi-steady matter-antimatter boundary layers discussed in Klein-Alfvén's cosmological theory, and a crude model of the corresponding ambiplasma balance is presented: (i) At interstellar particle densities, no well-defined boundary layer can exist in presence of neutral gas, nor can such a layer be sustained in an unmagnetized fully ionized ambiplasma. (ii) Within the limits of applicability of the present model, sharply defined boundary layers are under certain conditions found to exist in a magnetized ambiplasma. Thus, at beta values less than unity, a steep pressure drop of the low-energy components of matter and antimatter can be balanced by a magnetic field and the electric currents in the ambiplasma. (iii) The boundary layer thickness is of the order of 2x 0≃10/BT 0 1/4 metres, whereB is the magnetic field strength in MKS units andT 0 the characteristic temperature of the low-energy components in the layer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00643754
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    DERIVATION OF THE LEHNERT FIELD EQUATIONS FROM GAUGE THEORY IN VACUUM: SPACE CHARGE AND CURRENT (2000)
    Springer
    Foundations of physics 13 (2000), S. 179-184 
    Details
    ISSN: 1572-9524
    Keywords: Lehnert vacuum charge currents ; gauge theory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that the Lehnert field equations in vacuum, with concomitant space charge and current, can be derived straightforwardly from standard gauge theory applied in vacuum, using the concept of covariant derivative and Feynman's universal influence. The Lehnert and Proca field equations are shown to be inter-related through the well-known de Broglie theorem, in which the photon mass can be interpreted as finite. These ideas go some way towards addressing the inconsistency inherent in Maxwell's famous displacement current, which has no concomitant vacuum space charge.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007883500760
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    SU(2)×SU(2) ELECTROWEAK THEORY IN LEP 1 DATA ON Z PARTICLE PRODUCTION (2000)
    Springer
    Foundations of physics 13 (2000), S. 193-196 
    Details
    ISSN: 1572-9524
    Keywords: LEP 1 data ; SU(2)×SU(2) ; electroweak theory ; Z′ bosons ; GUTS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Recent data obtained by LEP1 are discussed and their potential implication for the existence of a Z′ particle. This letter advocates that this fits within the basic tenet of an SU(2)×SU(2) extended theory of the standard model of electroweak interactions. This extended electroweak model is motivated by nonabelian electrodynamics that provides an effective calculus for nonlinear optics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007887601668
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    EFFECT OF VACUUM ENERGY ON THE ATOMIC SPECTRA (2000)
    Springer
    Foundations of physics 13 (2000), S. 289-296 
    Details
    ISSN: 1572-9524
    Keywords: energy inherent in the vacuum ; Higgs mechanism ; atomic spectra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The effect of vacuum energy on the spectrum of atomic H is investigated using a Schrödinger equation and Higgs mechanism. It is shown that the effect of the latter is to decrease the energy level of the ground state of the H atom emitting energy in the process. This mechanism has been observed empirically in recently reported reproducible and repeatable experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007856222141
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...