Stopping of ions and local electron densities at strong coupling

作者: G. Zwicknagel , Q. Spreiter , C. Toepffer

DOI: 10.1023/A:1012690108267

关键词: IonPlasmaMagnetic fieldCoupling (physics)Stopping power (particle radiation)ElectronRydberg formulaElectron densityPhysicsAtomic physics

摘要: We employ molecular dynamics (MD) computer simulations to investigate ions in electron plasmas at strong coupling. observed this regime a stopping power of highly charged low velocities which scales with the charge like Z1.5. This clearly deviates from Z2 ln(const./Z) scaling conventional weak coupling theories and is connected strongly enhanced local density electrons around caused by trapping high Rydberg states due multi-particle collisions occurring For parameters corresponding less coupled situation an cooler we find moderate enhancement created under influence external magnetic field.

参考文章(12)
I.N. Meshkov, Electron cooling: Status and perspectives Physics of Particles and Nuclei. ,vol. 25, pp. 631- 661 ,(1994)
Günter Zwicknagel, Christian Toepffer, Paul-Gerhard Reinhard, Molecular dynamic simulations of ions in electron plasmas at strong coupling Hyperfine Interactions. ,vol. 99, pp. 285- 291 ,(1996) , 10.1007/BF02274932
H. Gao, D. R. DeWitt, R. Schuch, W. Zong, S. Asp, M. Pajek, Observation of enhanced electron-ion recombination rates at very low energies. Physical Review Letters. ,vol. 75, pp. 4381- 4384 ,(1995) , 10.1103/PHYSREVLETT.75.4381
Thomas Peter, Jürgen Meyer-ter-Vehn, Energy loss of heavy ions in dense plasma. I. Linear and nonlinear Vlasov theory for the stopping power. Physical Review A. ,vol. 43, pp. 1998- 2014 ,(1991) , 10.1103/PHYSREVA.43.1998
H Poth, Electron cooling: Theory, experiment, application Physics Reports. ,vol. 196, pp. 135- 297 ,(1990) , 10.1016/0370-1573(90)90040-9
T. Winkler, K. Beckert, F. Bosch, H. Eickhoff, B. Franzke, O. Klepper, F. Nolden, H. Reich, B. Schlitt, P. Spädtke, M. Steck, Electron cooling force measurements for highly charged ions in the ESR Hyperfine Interactions. ,vol. 99, pp. 277- 283 ,(1996) , 10.1007/BF02274931
S. Baird, J. Bosser, C. Carli, M. Chanel, P. Lefèvre, R. Ley, R. Maccaferri, S. Maury, I. Meshkov, D. Möhl, G. Molinari, F. Motsch, H. Mulder, G. Tranquille, F. Varenne, Measurement of the lifetime of Pb52+, Pb53+ and Pb54+ beams at 4.2 MeV per nucleon subject to electron cooling Physics Letters B. ,vol. 361, pp. 184- 186 ,(1995) , 10.1016/0370-2693(95)01164-L
U. Schramm, T. Schüssler, D. Habs, D. Schwalm, A. Wolf, Laser-induced recombination studies with the adiabatically expanded electron beam of the Heidelberg TSR Hyperfine Interactions. ,vol. 99, pp. 309- 316 ,(1996) , 10.1007/BF02274935
O. Uwira, A. Müller, W. Spies, J. Linkemann, A. Frank, T. Cramer, L. Empacher, R. Becker, M. Kleinod, P. H. Mokler, J. Kenntner, A. Wolf, U. Schramm, T. Schüssler, D. Schwalm, D. Habs, RECOMBINATION OF ELECTRONS WITH HIGHLY CHARGED HEAVY IONS AT VERY LOW ENERGIES Hyperfine Interactions. ,vol. 99, pp. 295- 300 ,(1996) , 10.1007/BF02274933