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Title of article :
Electron and positron cooling of highly charged ions in a cooler Penning trap
Author/Authors :
Bernard، نويسنده , , J. and Alonso، نويسنده , , J. and Beier، نويسنده , , T. and Block، نويسنده , , M. and Djeki?، نويسنده , , S. and Kluge، نويسنده , , H.-J. and Kozhuharov، نويسنده , , C. and Quint، نويسنده , , W. and Stahl، نويسنده , , Perminder S. and Valenzuela، نويسنده , , T. and Verd?، نويسنده , , J. and Vogel، نويسنده , , M. and Werth، نويسنده , , G.، نويسنده ,
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Abstract :
Electron cooling is a well-established technique to increase the phase space density of particle beams in storage rings. In this paper, we discuss the feasibility of electron and positron cooling of ions in a Penning trap. We calculate the cooling times for the cases of trapped bare ions with nuclear charge Z=1 (protons), Z=36 (krypton) and Z=92 (uranium) with the Spitzer formula. Our calculations show that for typical experimental conditions the time for cooling from initial energies of 10 keV per charge down to rest is in the order of a second. We investigate the dependence of the cooling time on the number of ions and electrons, and their charge and mass.
Keywords :
Slow HCI , Penning traps , electron cooling , Positron cooling
Journal title :
Astroparticle Physics
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