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Acceleration of pickup ions at the termination shock
AIP Conference Proceedings, 2006With a model based on the numerical solution of the standard focused transport equation we investigated the acceleration of ∼ 1 keV interstellar pickup protons at a reverse shock with an obliquity of 45°. We found that the model reproduces the basic spectral features of more sophisticated hybrid codes. The model also explains in principle the Voyager 1
J. A. le Roux, G. M. Webb
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On the Origin of Inner Source Pickup Ions
AIP Conference Proceedings, 2010Inner source pickup ions are thought to originate from the interaction of solar wind ions with interplanetary dust grains in the inner heliosphere. Processes which produce inner source pickup ions, and which have been considered so far are implantation of solar wind on grains and subsequent desorption, charge exchange of solar wind ions during transit ...
Peter Bochsler +7 more
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Energy diffusion of pickup ions upstream of comets
Journal of Geophysical Research: Space Physics, 1987We present a steady state model of pickup ion energization upstream of a cometary bow wave in order to investigate the effects of quasi‐linear energy diffusion in the turbulence there. The model assumes that the ions are immediately isotropized at pickup, and it includes the effects of adiabatic acceleration in the slowing solar wind and of continual ...
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Pickup ions observed at comet Halley
AIP Conference Proceedings, 1992Instruments on the Giotto spacecraft obtained data on the velocity distributions of pickup ions in the vicinity of comet Halley. Combination of data from two different instruments allows a comparative study of the pitch‐angle scattering rates and velocity diffusion rates of protons and water‐group ions. The key features of the data are reviewed.
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Charge-pickup processes in relativistic heavy-ion reactions
Physical Review C, 1995We have measured a complete isotope distribution of projectile-like nuclear-charge pickup products, formed by bombarding a {sup 17}Al target with 790{ital A} MeV {sup 129}Xe ions. The shape of the cross-section distribution indicates a dominant influence of evaporation processes during the formation of the final cesium fragments observed, thus masking ...
, Sümmerer +8 more
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Simulations of pickup-ion acceleration at quasi-perpendicular shocks
Space Science Reviews, 1995We present results from hybrid simulations (kinetic ion/fluid electron) of the interaction of interstellar pickup ions with collisionless shocks. Since cross-field transport is unphysically suppressed in the one-dimensional geometry used here, an ad hoc scattering algorithm is used to model this effect. This is a necessary step to accelerate the pickup
J. Giacalone, J. R. Jokipii
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Interstellar pickup ions in the solar wind
AIP Conference Proceedings, 1999Interstellar pickup protons strongly influence the properties of the outer heliosphere and their effects scale with the density of inflowing hydrogen at the termination shock. In order to estimate this quantity from available measurements of the pickup protons, we need to understand the observed structure and transport of these ion distributions.
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Acceleration of pickup ions at quasi-stationary shocks
AIP Conference Proceedings, 2007Observations of omnipresent suprathermal power law tails, with the unique spectral index of −5, on the velocity distributions of solar wind and pickup ions raise important questions and have far reaching consequences. The obvious question of how these tails are formed during quiet times, when no shocks are present, was previously addressed and is ...
G. Gloeckler, L. A. Fisk
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A dispersive analysis of bispherical pickup ion distributions
Journal of Geophysical Research: Space Physics, 1996We investigate the properties of a bispherical shell distribution of pickup ions when dispersion of the resonant waves is taken into account. We also extend the method of Johnstone et al. [1991] and Huddleston and Johnstone [1992] for determining the spectra of the quasi‐linear self‐generated waves to include dispersion.
Philip A. Isenberg, Martin A. Lee
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Evolution of interstellar pickup ions in the solar wind
Journal of Geophysical Research: Space Physics, 1987A model is constructed for the evolution of an interstellar pickup ion distribution in the solar wind. The model assumes that the ions are immediately isotropized at ionization and follows the subsequent development of the distribution function as the particles are convected with the solar wind.
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