Interference Effects in Quasimolecular Radiation and a Clock for Heavy Ion Nuclear Reactions
Quasimolecular radiation has been extensively studied both experimentally and theoretically during the last decade. The use of H-like ions at low velocities brings a new dimension to the study of quasimolecular K x-rays. The most important consequence is the observation of interference structures in the quasimolecular K xray spectra which result from the coherent sum of x-ray emission in the incoming and outgoing half of the trajectory. Using very simple assumptions it is possible to obtain, directly from the data, the quasimolecular orbital transition energy as a function of internuclear distance, thus opening the way for spectroscopic studies of quasimolecular orbitals in general. As an extension of this work we propose to use these interference structures as a clock to measure nuclear sticking times in heavy ion nuclear reactions. From calculations we expect the method to be sensitive to sticking times as short as 10-20s for collisions of Sn+Sn.
KeywordsAnisotropy Rine Stripper
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- 6.M. Meron, B.M. Johnson, K.W. Jones, R. Schuch, H. Schmidt-Böcking, and I. Tserruya, Nucl. Instrum. Methods B10 /11, 64 (1985).Google Scholar
- 7.R. Krieg, E. Bozek, U. Gollerthan, E. Kankeleit, G. Klotz-Engmann, M. Krämer, U. Meyer, H. Oeschler, and P. Senger, Phys. Rev. C. Submitted.Google Scholar
- 9.J. Kirsch, B. Muller, and W. Greiner, UFTP preprint 154/1985.Google Scholar
- 14.See ref. 2 for other attempts, in particular anisotropy measurements, to obtain spectroscopic information about quasimolecular orbitals.Google Scholar
- B. Müller. In: “Proc. Ninth Int. Conf. on the Physics of Electronic and Atomic Collisions,” J.S. Risley and R. Geballe, eds., Univ. of Washington Press, Seattle (1976), p. 481.Google Scholar
- 20.R. Anholt — private communication.Google Scholar
- 21.R. Schuch — private communication.Google Scholar
- 27.J.P. Blocki, H. Feldmeier and W.J. Swiatecki, to be published in Nucl. Phys. A.Google Scholar
- 29.H. Schmidt-Böcking, private communication.Google Scholar