1.
Science
; 181(4095): 156-8, 1973 Jul 13.
Artículo
en Inglés
| MEDLINE
| ID: mdl-17746623
RESUMEN
The backscattering of alpha particles from a radioactive source can be used to determine the amounts of heavy elements such as lead in surface materials. A light, portable instrument has been constructed that can be used as a survey meter for painted surfaces. It has a sensitivity of 0.3 percent by weight in a measurement of a few minutes.