ES
Brazil Brazil · Rio De Janeiro · -22.911, -43.206

Argonauta

Argonauta, a research reactor (other) in Rio De Janeiro, Brazil, with 200 W of thermal power, operated by Instituto de Engenharia Nuclear (IEN). Operating, first critical in 1965.

By thermal power it ranks third among the 4 research reactors operating in Brazil. It went critical 8 years after the first research reactor in Brazil, IEA-R1 (1957). Its declared uses include isotope production, neutron scattering, neutron radiography and teaching. It has been 61 years since its first criticality.

Country
Brazil
City
Rio De Janeiro
Type
Other
Thermal power
200 W
Operator
Instituto de Engenharia Nuclear (IEN)
Status
Operating
First criticality
1965
Purpose
Isotope production, neutron scattering, neutron radiography, teaching, training, activation analysis

Data: IAEA RRDB · updated on Sep 3, 2026

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