239 citations · 380 across the 4 of their papers we have counts for
4 papers
Measurement of plutonium isotopes, 239Pu and 240Pu, in air-filter samples from Seville (2001-2002)
E. Chamizo, M. García-León, S. M. Enamorado +2
Since the last nuclear atmospheric test carried out by the People Republic of China in 1980 and since the Chernobyl accident in 1986, the plutonium hasn't been directly released in…
Solar cyclic activity over the last millennium reconstructed from annual 14C data
I. G. Usoskin, S. K. Solanki, N. Krivova +5
The 11-year solar cycle is the dominant pattern of solar activity reflecting the oscillatory dynamo mechanism in the Sun. Solar cycles were directly observed since 1700, while indi…
Rapid 14C excursion at 3372-3371 BCE not observed at two different locations, a comment on Wang et al. (2017)
AJ Timothy Jull, Irina Panyushkina, Matthew Salzer +6
Excursions in the carbon-14 record measured in tree rings are attributed to various high energy but short-lived cosmic effects. So far, rapid changes at 774-775 CE, 993-994 CE and…
The AD775 cosmic event revisited: the Sun is to blame
I. G. Usoskin, B. Kromer, F. Ludlow +5
Miyake et al. (henceforth M12) recently reported, based on 14C data, an extreme cosmic event ca. AD775. Using a simple model, M12 claimed that the event was too strong to be caused…