Reinald Kallenbach

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This report emphasizes new observational aspects of CIR ions revealed by advanced instruments launched on the Ulysses, WIND, SOHO, and ACE spacecraft, and by the unique vantage point of Ulysses which carried out the first survey of Corotating Interaction Region (CIR) properties over a very wide range of heliolatitudes. With this more complete observational(More)
The space-qualified design of a miniaturized laser for pulsed operation at a wavelength of 1064 nm and at repetition rates up to 10 Hz is presented. This laser consists of a pair of diode-laser pumped, actively q-switched Nd:YAG rod oscillators hermetically sealed and encapsulated in an environment of dry synthetic air. The system delivers at least 300(More)
On the basis of the observational picture established in the report of Mason, von Steiger et al. (1999) the status of theoretical models on origin, injection, and acceleration of particles associated with Corotating Interaction Regions (CIRs) is reviewed. This includes diffusive or first-order Fermi acceleration at oblique shocks, adiabatic deceleration in(More)
The two-dimensional model of the solar wind-local interstellar medium interaction developed by Baranov & Malama (1993, J. Geophys. Res., 98, 15 157) is improved by taking into account the dynamical effect of anomalous cosmic rays. The cosmic rays are treated as a massless diffusive fluid. It is shown that the termination shock shifts further away from the(More)
A new mechanism for acceleration and enrichment of He during impulsive solar flares is presented. Low-frequency electromagnetic plasma waves excited by the Electron Firehose Instability (EFI) can account for the acceleration of ions up to 1 MeV amu−1 energies as a single stage process. The EFI arises as a direct consequence of the free energy stored in a(More)
P. Király, W.I. Axford, E.I. Daibog, B. Heber, R. Kallenbach, K. Kecskeméty, G.M. Mason, Yu.I. Logachev, R.A. Mewaldt, A. Posner, J. Rodríguez-Pacheco, R. Treumann, M.A. Zeldovich (a) KFKI Research Institute for Particle and Nuclear Physics, H-1525 Budapest P.O.B. 49, Hungary (b) University of Alabama in Huntsville, USA, and MPI in Lindau, Germany (c)(More)
We present first results on the Ca isotopic abundances derived from the high resolution Mass Time-of-Flight (MTOF) spectrometer of the charge, element, and isotope analysis system (CELIAS) experiment on board the Solar and Heliospheric Observatory (SOHO). We obtain isotopic ratios Ca/Ca = (128± 47) and Ca/Ca = (50± 8), consistent with terrestrial values.(More)
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