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Large electron polarization of H-like20Ne-ions traversing gd foils at very high velocities

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

It is shown that transient magnetic fields in Gd-host for20Ne ions at a mean velocity of 12.5v0(v0=c/137), considerably beyond the Bohr velocity of 1s electrons of Ne ions (v1s=10v0), are dominated by the Fermi contact field of these electrons. The first excited 2+-state of2Ne was used as probe. The derived value for the mean degree of polarization p1s=0.32(13), is surprisingly large, though still consistent with values obtained at lower velocities. Present calculations of spin exchange cross sections severely underestimate the observed polarization at this high velocity.

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References

  1. Speidel, K.-H.: Ann. Israel Phys. Soc.7, 69 (1984)

    Google Scholar 

  2. Seiler-Clark, G., Pelte, D., Emling, H., Balanda, A., Grein, H., Grosse, E., Kulessa, R., Schwalm, D., Wollersheim, H.-J., Mass, M., Kumbartzki, G.J., Speidel, K.-H.: Nucl. Phys. A399, 211 (1983)

    Google Scholar 

  3. Speidel, K.-H.: Hyp. Int.34, 167 (1987)

    Google Scholar 

  4. Hagelberg, F., Speidel, K.-H., Tandon, P.N.: Z. Phys. D -Atoms, Molecules and Clusters17, 17 (1990)

    Google Scholar 

  5. Kumbartzki, G.J., Hagemeyer, K., Knauer, W., Krösing, G., Kuhnen, R., Mertens, V., Speidel, K.-H., Gerber, J., Nagel, W.: Hyp. Int.7, 253 (1979)

    Google Scholar 

  6. Speidel, K.-H., Hagelberg, F., Knopp, M., Trölenberg, W., Neuburger, H., Gerber, J., Hanna, S.S., Dekhissi, H., Tandon, P.N.: Z. Phys. D-Atoms, Molecules and Clusters l, 363 (1986)

  7. Speidel, K.-H., Knopp, M., Karle, W., Kilgus, U., Dong, M.-L., Simonis, H.-J., Hagelberg, F., Gerber, J.: Z. Phys. A — Atomic Nuclei331, 29 (1988)

    Google Scholar 

  8. Speidel, K.-H., Knopp, M., Karle, W., Cub, J., Tandon, P.N., Reuter, U., Simonis, H.-J., Kremeyer, S., Hagelberg, F.: Hyp. Int.59, 1347 (1990)

    Google Scholar 

  9. Speidel, K.-H., Cub, J., Knopp, M., Simonis, H.-J., Wollersheim, H.-J., Egelhof, P., Emling, H., Grein, H., Henning, W., Holzmann, R., Simon, R.S., Schmidt, R., Gollwitzer, N.: Hyp. Int.59, 1343 (1990)

    Google Scholar 

  10. Häusser, O., Andrews, H.R., Ward, D., Rud, N., Taras, P., Nicole, R., Keinonen, J., Skensved, P., Stager, C.V.: Nucl. Phys. A406, 339 (1983)

    Google Scholar 

  11. Speidel, K.-H., Knopp, M., Karle, W., Dong, M.-L., Cub, J., Reuter, U., Simonis, H.-J., Tandon, P.N., Gerber, J.: Phys. Lett.227B, 16 (1989)

    Google Scholar 

  12. Speidel, K.-H, Cub, J, Karle, W, Passek, F, Reuter, U, Weidinger, M, Gerber, J, Tandon, P.N.: Proc. 15th Intern. Conf. on Particle Tracks in Solids, Marburg (FRG), Sept. 1990

  13. Trölenberg, W., Hagelberg, F., Simonis, H.-J., Tandon, P.N., Speidel, K.-H., Knopp, M., Gerber, J.: Nucl. Phys. A458, 95 (1986)

    Google Scholar 

  14. Raghavan, P.: At. Data Nucl. Data Tables42, 18 (1989)

    Google Scholar 

  15. Maier-Komor, P.: Nucl. Instrum. Methods A282, 133 (1989)

    Google Scholar 

  16. Winther, A., de, Boer, J.: In: Alder, K., Winther, A. (eds.) Coulomb excitation, p. 303. New York: Academic Press (1966)

    Google Scholar 

  17. Goldring, G.: In: Bock, R. (ed.) Heavy ion collisions, Vol 3, p. 483. Amsterdam: North Holland (1982)

    Google Scholar 

  18. Dybdal, K., Rud, N.: Phys. Scr.35, 441 (1987)

    Google Scholar 

  19. Wittkower, A.B., Betz, H.D.: Atomic Data5, 113 (1973)

    Google Scholar 

  20. Ziegler, J.F.: Handbook of stopping cross sections for energetic ions in all elements, Vol. 5. London: Pergamon Press 1980

    Google Scholar 

  21. Simonis, H.-J., Hagelberg, F., Knopp, M., Speidel, K.-H., Karle, W., Gerber, J.: Z. Phys. D — Atoms, Molecules and Clusters 7, 233 (1987)

    Google Scholar 

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Author notes

  1. H. -J. Simonis

    Present address: Institut für Kernphysik, Kernforschungszentrum Karlsruhe, W-7500, Karlsruhe l, Germany

Authors and Affiliations

  1. Physik-Department, Technische Universität München, W-8046, Garching, Germany

    K. -H. Speidel, J. Cub, U. Reuter & F. Passek

  2. Gesellschaft für Schwerionenforschung, W-6100, Darmstadt, Germany

    H. -J. Wollersheim, N. Martin, P. Egelhof, H. Emling, W. Henning, R. S. Simon & R. Schmidt

  3. Institut für Strahlen- und Kernphysik, Universität Bonn, W-5300, Bonn, Germany

    H. -J. Simonis

  4. Sektion Physik, Ludwig-Maximilians-Universität München, W-8046, Garching, Germany

    N. Gollwitzer

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  1. K. -H. Speidel
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  2. J. Cub
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  12. H. -J. Simonis
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  13. N. Gollwitzer
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Additional information

The authors are grateful to the operating staff of the UNILAC for providing excellent beam conditions. They also thank Dr. P. Maier-Komor for preparing the delicate targets. Support by the BMFT is acknowledged.

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Speidel, K.H., Cub, J., Reuter, U. et al. Large electron polarization of H-like20Ne-ions traversing gd foils at very high velocities. Z. Physik A - Hadrons and Nuclei 339, 265–268 (1991). https://doi.org/10.1007/BF01284063

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  • DOI: https://doi.org/10.1007/BF01284063

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