Atmospheric bismuth-212: Measurement and some geophysical applications

Joel R. Gat, Gad Assaf

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The concentrations of lead-212 and its short-lived daughter bismuth-212 in air near the ground were determined simultaneously by adaptation of the immersed-filter, delayed-coincidence technique of Assaf and Gat to measurement of the 3 × 10-7-second bismuth-212 and polonium-212 pair. The radioactive disequilibrium between lead-212 and bismuth-212 depends strongly on the efficiency of the ground in acting as a sink for these nuclides. This efficiency is low under dry conditions.

Original languageEnglish
Pages (from-to)977-979
Number of pages3
JournalScience
Volume159
Issue number3818
DOIs
StatePublished - 1 Jan 1968
Externally publishedYes

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