Radioactive Isotopes of Sr, Y and Zr

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 1940 United States English Publisher:American Physical Society (APS)Journal:Physical Review, volume 58, pages 7-11 (issn: 0031-899X,

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Authors: DuBridge, L. A.; Marshall, John;

doi: 10.1103/physrev.58.7

Radioactive Isotopes of Sr, Y and Zr

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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. (Sr87*, e-, γ); 70-min. (Sr85, e-, γ); 66-day (Sr85, K, γ); 80-hr. (Y87, K); 14-hr. (Y87, e-, γ); 105-day (Y86, K, γ); 4.5-min. (Zr89, γ); 78-hr. (Zr89, β+). (In each case e- means conversion electrons, not nuclear β-rays.) The electron spectrum of the 2.75-hr. Sr87* shows a single line at 360 kev and this period is shown to grow from the 80-hr. Y87, but not from the 14-hr. isomer.

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United States

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University of Rochester
United States
California Institute of Technology
United States

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