Abstract
The giant-halo inclusion reported to show the strongest evidence for superheavy elements on the basis of proton-induced x-ray fluorescence has been re-examined with ≈ 55 times greater sensitivity by employing synchrotron radiation as the exciting source. It is shown conclusively that at concentration levels of ≈ 5 × atoms per inclusion, superheavy elements are not present in or in numerous other giant-halo inclusions studied.
- Received 7 November 1977
DOI:https://doi.org/10.1103/PhysRevLett.40.507
©1978 American Physical Society