Abstract
The Doppler shift and the anisotropy of the MO X-rays above the separated-atomK-lines have been measured in208Pb+208Pb and209Bi+209Bi collisions at beam energies between 4.2 and 4.8 MeV/u. The Doppler shift is found to be consistent with a source moving with 90% of the center of mass velocity of the colliding system. One peak is observed in the anisotropy spectrum. This peak might be attributed to transitions from the continuum into the minimum of the 2p 1/2 σ MO or from the 3p 1/2 σ and 2p 3/2 σ MO's into the 2 sσ MO near the united atom limit. Radiative electron capture and secondary electron bremsstrahlung could be excluded as major sources of the observed radiation. Contrary to lighter systems no anisotropy corresponding to transitions into the 1 sσ orbital could be observed.
Similar content being viewed by others
References
Mokler, P.H. Kraft, G., Stein, H.J.: Proceedings of the International Conference on Reactions between Complex Nuclei. Nashville, Tennessee, June 10–14, 1974. p. 134. North Holland Publ. Co. and Phys. Rev. Lett.33, 476 (1974)
Greenberg, J.S., Davis, C.K., Vincent, P.: Proceedings of the International Conference on Reactions between Complex Nuclei. Nashville, Tennessee, June 10–14, 1974. p. 135. North Holland Publ. Co. and Phys. Rev. Lett.33, 473 (1974)
Thoe, R.S., Sellin, I.A., Brown, M.D., Forester, J.P., Griffin, P.M., Pegg, D.J., Peterson, R.S.: Phys. Rev. Lett.34, 64 (1975)
Meyerhof, W.E., Saylor, T.K., Anholt, R.: Phys. Rev. A12, 2641 (1975)
Mokler, P.H., Armbruster, P., Hagmann, S., Folkmann, F., Kraft, G., Stein, H.J.: Abstracts of Papers of the IXth International Conference on the Physics of Electronics and Atomic Collisions. Seattle 24–30 July. 1975. p. 310. University of Washington Press and Z. Physik A276, 15 (1976)
Wölfli. W., Stoller, Ch., Bonani, G., Suter. M., Stöckli, M.: Abstracts of Papers of the IXth International Conference on the Physics of Electronic and Atomic Collisions. Seattle 24–30 July. 1975. Addendum A1. University of Washington Press and Lett. Nuovo Cimento14. 577 (1975)
Frank. W., Kaun, H.-H., Manfrass, P., Pronin, N.V., Tretyakov, Y.P.: Z. Physik A279, 213 (1976)
Stoller, C., Wölfli, W., Bonani, G., Stöckli, M., Suter, M.: J. Phys. B10, L347 (1977)
Stoller, C., Wölfli, W., Bonani, G., Morcnzoni, E., Stöckli, M.: Z. Physik A287, 33 (1978)
Meyerhof, W.E., Clark, D.L., Stoller, C., Morenzoni, E., Wölfli, W., Folkmann. F., Vincent, P., Mokler, P.H., Armbruster, P.: Phys. Lett. A70, 303 (1979). The halfwidths H given in this paper are wrong, the correct halfwidths are31, 18. 11 and 6 keV for lsσ, 2p 1 2 σ. 2sσ and 2p 3/2 σ.
Wölfli, W., Morenzoni, E., Stoller, C., Bonani, G., Stöckli, M.: Phys. Lett. A68, 217 (1978)
Gros, M., Greenland, P.T., Greiner, W.: Z. Phys. A280, 31 (1977)
Anholt, R.: Z. Physik A288, 257 (1978)
Wölfli, W., Stoller, C., Bonani, G., Stöckli, M., Suter, M., Däppen, W.: Z. Phys. A286, 249 (1978)
Däppen, W.: Thesis ETH Zürich (1977) unpublished
Fricke, B., Hartung, H., Morovic, T., Sepp, W.-D., Rosen, A.: Contributed paper VI International Conference on Atomic Physics, Riga 1978. p. 371
Hartung, H., Fricke, B.: Z. Physik A288, 345 (1978)
Meyerhof, W.E., Anholt, R., El Masri, Y., Lee, I.Y., Cline, D., Stephens, F.S., Diamond, R.M.: Phys. Lett B69, 41 (1977)
Backe, H., Handschug, L., Hessberger, F., Kankeleit, E., Weik, F., Wittwater, R., Bokemeyer, H., Vincent. P., Nakayama, K., Greenberg, S.S.: Phys. Rev. Lett.40, 1443 (1978)
Kirsch, J., Betz, W., Reinhardt, J., Soff, G., Müller, B., Greiner, W.: Phys. Lett. B72, 298 (1978)
Kirsch, J.: Ph.D. Thesis, University of Frankfurt, (1980), unpublished. These calculations were done in the long wave length limit, this might explain at least part of the remaining discrepancy between theory and experiment
Berdermann, E., Bokemeyer, H., Bosch, F., Clemente, M., Güttner, F.F., Kienle, P., Koenig, W., Kozhuharov, C., Krimm, H., Martin, B., Povh, P., Traxel, K.: Th. Walcher, GSI Jahresbereicht 1978. p. 95
Vincent, P., Davis, C.K., Greenberg, J.S.: Phys. Rev. A18, 1879 (1978)
Soff, G., Beth, W., Heiligenthal, G., Kirsch, J., Müller, B., Reinhardt, J., Greiner, W., Fizika9, Suppl. 4, 721 (1977)
Fricke, B., Soff, G.: At Data Nucl. Data Tables19, 83 (1977)
Armbruster, P., Behncke, H.-H., Hagmann, S., Liesen, D., Folkmann, F., Mokler, P.H.: Z. Physik A288, 277 (1978)
Bosch, F., Liesen, D., Armbruster, P., Maor, D., Mokler, P.H., Schmidt-Böcking, H., Schuch, R.: Z. Physik A296, 11 (1980)
Vincent, P.: Proceedings of the 18th International Winter School on Nuclear Physics. Bormio. 1980 (to be published)
Author information
Authors and Affiliations
Additional information
We thank D.L. Clark and R. Diamond for assisting with the experiments at the SUPERHILAC, Berkeley, and W. Enders at the UNILAC, Darmstadt. We are indebted to R. Wagner, Institute of Nuclear Physics, KFA Jülich, for producing the highly enriched208Pb and to H. Folger, GSI, for preparing the targets. One of us (WEM) acknowledges with gratefulness receipt of a Tenured Faculty Development Award, supported by Lilly Endowment, Inc., from Stanford University and the hospitality of the Laboratorium für Kernphysik of the ETH during a 4-month stay there at the time these experiments were in progress. This work was supported in part by the U.S. National Science Foundation, the Swiss National Science Foundation and the Danish Natural Science Research Council.
Rights and permissions
About this article
Cite this article
Stoller, C., Morenzoni, E., Wölfli, W. et al. MO X-ray angular distributions from 1 GeV208Pb+208Pb and209Bi+209Bi collisions. Z Physik A 297, 93–99 (1980). https://doi.org/10.1007/BF01421464
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01421464