Automatic measurements and computations for radiochemical analyses
Links
- More information: Publisher Index Page (via DOI)
- Download citation as: RIS | Dublin Core
Abstract
In natural radioactive sources the most important radioactive daughter products useful for geochemical studies are protactinium-231, the alpha-emitting thorium isotopes, and the radium isotopes. To resolve the abundances of these thorium and radium isotopes by their characteristic decay and growth patterns, a large number of repeated alpha activity measurements on the two chemically separated elements were made over extended periods of time. Alpha scintillation counting with automatic measurements and sample changing is used to obtain the basic count data. Generation of the required theoretical decay and growth functions, varying with time, and the least squares solution of the overdetermined simultaneous count rate equations are done with a digital computer. Examples of the complex count rate equations which may be solved and results of a natural sample containing four alpha-emitting isotopes of thorium are illustrated. These methods facilitate the determination of the radioactive sources on the large scale required for many geochemical investigations.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Automatic measurements and computations for radiochemical analyses |
| Series title | Analytical Chemistry |
| DOI | 10.1021/ac60165a013 |
| Volume | 32 |
| Issue | 9 |
| Year Published | 1960 |
| Language | English |
| Publisher | American Chemical Society |
| Description | 6 p. |
| First page | 1093 |
| Last page | 1098 |
| Google Analytic Metrics | Metrics page |