Some Measurements of Gamma-Ray Energies
- 15 September 1948
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 74 (6), 677-682
- https://doi.org/10.1103/physrev.74.677
Abstract
To examine the possibility that some radio-isotopes which have been considered to decay by -capture do in part decay with the emission of very slow positrons careful measurements of the -rays emitted by two of them have been made. Preliminary measurements were made of the and lines of ThB as a check on the spectrometer used. Also the annihilation radiation line of was measured to establish its shape and position. In the course of this, good evidence was found for radiation resulting from annihilation while the positron is in flight. The weak high energy gamma-ray previously reported was found and its energy determined to be 1.34±0.01 Mev. The -radiation of both and consists of a single line at 485±5 kev and 320±5 kev, respectively. No evidence of annihilation radiation was found in either case.
Keywords
This publication has 5 references indexed in Scilit:
- Gamma-Rays from, Annihilation of Swift Positrons, and Experiments on Orbital-Electron CapturePhysical Review B, 1947
- Beta- and Gamma-Ray Energies of Several Radioactive IsotopesPhysical Review B, 1946
- The Energy of Gamma-Rays Accompanying the Decay ofBe7Physical Review B, 1942
- -Electron Capture and Internal Conversion inPhysical Review B, 1940
- The γ-rays of thorium B and of the thorium C bodiesProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1932