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Zeitschrift für Physik

, Volume 167, Issue 1, pp 111–122 | Cite as

A search for nuclear structure effects in Tm169

  • Z. Grabowski
  • J. E. Thun
  • M. S. El-Nesr
  • W. D. Hamilton
Article

Abstract

The study of nuclear structure effects in internal conversion has been extended to the Tm169 nucleus. Gamma-gamma, electron-gamma and gamma-electron directional correlations of the 177 keV-131 keV and the 198 keV-110 keV cascades have been measured. The following results were obtained:
$$\begin{array}{l} A_2 (177\gamma - 131\gamma ) = + 0 \cdot 275 \pm 0 \cdot 007,A_4 (177\gamma - 131\gamma ) = - 0 \cdot 005 \pm 0 \cdot 016, \\ A_2 (177\gamma - 131\gamma ) = + 0 \cdot 002 \pm 0 \cdot 007, \\ A_2 (177\gamma - 131K) = + 0 \cdot 497 \pm 0 \cdot 010, \\ A_2 (198\gamma - 110\gamma ) = + 0 \cdot 295 \pm 0 \cdot 007,A_4 (198\gamma - 110\gamma ) = - 0 \cdot 013 \pm 0 \cdot 017, \\ A_2 (198K - 110\gamma ) = + 0 \cdot 001 \pm 0 \cdot 008, \\ A_2 (198\gamma - 110K) = - 0 \cdot 005 \pm 0 \cdot 006. \\ \end{array}$$
.

The results of the electron-gamma directional correlation measurements for the strongly retardedK-forbidden 177 keVM 1 transition are in agreement with the theory for smallλ-values. It is thus concluded that nuclear structure effects are not appreciable. For the retardedK-forbidden 198 keVM 1 transition the experimental results are also in agreement with theory for smallλ-values but do not exclude highλ-values.

Keywords

Elementary Particle Structure Effect Nuclear Structure Correlation Measurement Internal Conversion 
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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Copyright information

© Springer-Verlag 1962

Authors and Affiliations

  • Z. Grabowski
    • 1
  • J. E. Thun
    • 1
  • M. S. El-Nesr
    • 1
  • W. D. Hamilton
    • 1
  1. 1.Institute of PhysicsUniversity of UppsalaUppsalaSweden

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