Abstract
Radioactive isotopes formed by bombardment of Rb, Sr and Y by protons, deuterons and neutrons are reported. The following are the periods and assignments: 2.75-hr. (, , ); 70-min. (, , ); 66-day (, , ); 80-hr. (, K); 14-hr. (, , ); 105-day (, , ); 4.5-min. (, ); 78-hr. (, ). (In each case means conversion electrons, not nuclear -rays.) The electron spectrum of the 2.75-hr. shows a single line at 360 kev and this period is shown to grow from the 80-hr. , but not from the 14-hr. isomer.
- Received 22 April 1940
DOI:https://doi.org/10.1103/PhysRev.58.7
©1940 American Physical Society