Abstract
Using gaseous H2 75Se sources the γγ directional correlation of the 121.0–279.5 keV γγ cascade of75As was measured as a function of pressure. The attenuation coefficientG 2 varied between 0.67 and 0.96 for pressures between 0.1 and 200 Torr. Since the perturbation of the directional correlation is caused by hyperfine interaction of the highly charged ion formed after electron capture, the pressure dependence may be understood as being mainly due to changes of the charge states during collisions with neutral molecules. A simple model is proposed yielding a reasonable fit to the experimental data.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
The authors are indebted to Prof. Dr. A. Flammersfeld for his support of this investigation. They thank Dr. L. Ziegeler for his help in the chemical preparation of the sources.
Rights and permissions
About this article
Cite this article
Borchert, I., Schumacher, M., Smend, F. et al. The perturbation of a γγ directional correlation of75As in gaseous H2 75Se sources. Z. Physik 256, 441–447 (1972). https://doi.org/10.1007/BF01386989
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01386989