Technical Notes - Measurement of Self-Diffusion Coefficients by Autoradiography
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 2
- File Size:
- 139 KB
- Publication Date:
- Jan 1, 1953
Abstract
A UTORADIOGRAPHY would appear to be sim-A pler and less time-consuming for diffusion studies than any of the radioactive tracer techniques commonly employed, namely, the sectioning, surface increase, and surface decrease techniques.' Accord- ingly, it was felt worthwhile to investigate the applicability of autoradiography to self-diffusion measurements, and gold was chosen for this purpose. The radioactive isotope Au'!'' was used, as obtained from the Brookhaven National Laboratory. Its radiation consists of p (0.97 mev) and y (0.41 mev) rays, and it has a half-life of 2.69 days. No-Screen X-ray film was found suitable for these experiments: the film has the desired high speed for recording P rays and yet is practically insensitive to y rays. On the other hand, due to the high atomic weight of gold, this metal is a strong absorber for p rays. The
Citation
APA: (1953) Technical Notes - Measurement of Self-Diffusion Coefficients by Autoradiography
MLA: Technical Notes - Measurement of Self-Diffusion Coefficients by Autoradiography. The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1953.