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Cross Sections for the Production of X Rays from Heavy Ion Collisions at MeV Energies

  • F. Bell
  • H.-D. Betz

Abstract

We have systematically investigated x rays which are emitted in heavy ion collisions. Absolute cross sections, a, are reported for the production of Cl-K x rays in collisions of 30- to 120-MeV chlorine ions with various thin solid targets ranging from ZT=6 (carbon) to ZT=92 (uranium). Surprisingly pronounced oscillations are found in the dependence of a on ZT; in contrast to general expectations these oscillations (i) are very sharp, (ii) tend to increase with increasing energy of the projectile, and (iii) can not, at present, be satisfactorily explained by Coulomb excitation or molecular orbital considerations. Furthermore, we present some detailed results on the newly discovered phenomenon of radiative electron capture (REC); the mechanism to produce REC, line position and width of REC are discussed.

Keywords

Target Atom Exit Channel Projectile Energy Coulomb Excitation Absolute Cross Section 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    H.-D. Betz and H. W. Schnopper, Communications of the European Conference on Nuclear Physics, Compt. Rend. Proc. II, 118 (1972).Google Scholar
  2. [2]
    H. W. Schnopper, A. R. Sohval, H.-D. Betz, J. P. Delvaille, K. Kalata, K. W. Jones, and H. E. Wegner, Proceedings of the Conference on Inner Shell Ionization Phenomena and Future Applications, ed. by R. W. Fink, Atlanta, USAEC Technical Information CONF-720404, 1348 (1972).Google Scholar
  3. [3]
    H.-D. Betz, Proceedings of the Heavy Ion Summer Study, ed. by S. T. Thornton, Oak Ridge, USAEC CONF-720669, 524 (1972).Google Scholar
  4. [4]
    H. W. Schnopper, H.-D. Betz, J. P. Delvaille, K. Kalata, A. R. Sohval, K. W. Jones, and H. E. Wegner, Phys. Rev. Letters 29, 898 (1972).ADSCrossRefGoogle Scholar
  5. [5]
    H.-D. Betz, Proceedings of the Conference on Particular Problems in Heavy Ion Research, ed. by P. Armbruster and B. Fricke, GSI Darmstadt, 1973 (to be published).Google Scholar
  6. [6]
    H.-D. Betz, J. P. Delvaille, K. Kalata, H. W. Schnopper, A. R. Sohval, K. W. Jones, and H. E. Wegner, Proceedings of the Conference on Inner Shell Ionization Phenomena and Future Applications, ed. by R. W. Fink, Atlanta, USAEC CONF-720404, 1374 (1972).Google Scholar
  7. [7]
    H.-D. Betz and H. W. Schnopper (to be published).Google Scholar
  8. [8]
    H. J. Specht, Z. Physik 185, 301 (1965).ADSCrossRefGoogle Scholar
  9. [9]
    F. W. Saris, Physica 52, 290 (1971).ADSCrossRefGoogle Scholar
  10. [10]
    T. M. Kavanagh, M. E. Cunningham, R. C. Der, R. J. Fortner, J. M. Khan, E. J. Zaharis, and J. D. Garcia, Phys. Rev. Letters 25, 1473 (1970).ADSCrossRefGoogle Scholar
  11. [11]
    G. Basbas, W. Brandt, and R. Laubert, Phys. Rev. A 7, 983 (1973).ADSCrossRefGoogle Scholar
  12. [12]
    H. Kubo, F. C. Jundt, and K. H. Purser, Phys. Rev. Letters 31, 674 (1973).ADSCrossRefGoogle Scholar
  13. [13]
    H.-D. Betz, Rev. Mod. Phys. 44, 465 (1972).ADSCrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 1975

Authors and Affiliations

  • F. Bell
    • 1
  • H.-D. Betz
    • 1
  1. 1.Sektion PhysikUniversität MünchenMünchenGermany

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