New Measurement of the 81Kr Atmospheric Abundance
- 1 January 1980
- journal article
- Published by Cambridge University Press (CUP) in Radiocarbon
- Vol. 22 (2) , 311-317
- https://doi.org/10.1017/s0033822200009607
Abstract
We have determined the 81Kr activity to be (0.067 ± 0.003) decay/min. 1 krypton. Using this activity in conjunction with our new measurement of the 80Kr(n/γ)81Kr reaction cross-section of (12 ± 4)b, we infer that the 81Kr activity is 1.5-2.0 times that which would be calculated using the current cosmic ray flux. This implies that the average cosmic ray intensity in the atmosphere during the 81Kr life-time was greater than the current intensity, a fact that has implications for the 14C time scale.Keywords
This publication has 3 references indexed in Scilit:
- 37Ar and81Kr in the atmosphereEarth and Planetary Science Letters, 1969
- The Relative Neutron Capture Cross Sections of the Isotopes of Krypton and XenonPhysical Review B, 1950
- A New Long-Lived Krypton ActivityPhysical Review B, 1950