N. M. Barbin, A. M. Kobelev, S. A. Titov, D. I. Terentev, “Thermodynamic analysis of compositions of combustion products of radioactive graphite in water vapor or air”, Fizika Goreniya i Vzryva, 2022, Volume 58, Issue 4,Pages <nobr>24

This article is cited in 1 paper

Thermodynamic analysis of compositions of combustion products of radioactive graphite in water vapor or air

N. M. Barbin^ab, A. M. Kobelev^a, S. A. Titov^a, D. I. Terentev^a

^a Ural Institute of the Russian Emergency Situations Ministry, 620062, Ekaterinburg, Russia
^b Ural Federal University named after the First President of Russia B. N. Yeltsin, 620062, Ekaterinburg, Russia

Abstract: Distribution of plutonium and americium compounds in the combustion products of radioactive graphite in water vapor or air is analyzed. The study is carried out via thermodynamic analysis using the TERRA software package in a temperature range of 400–3200 K. It is revealed that all carbon in water vapor passes into gas at temperatures above 900 K, and its transition temperature in air is 1000 K. Condensed plutonium compounds transform into vapor compounds in water vapor at temperatures above 1800 K and in air at 1700 K. Condensed americium compounds begin transforming into a vapor state at temperatures above 2000 K, and their transition temperature in air is 2200 K.

Keywords: thermodynamic analysis, actinides, air, water vapor, radioactive graphite.

UDC: 541.13+11

Received: 24.01.2022
Revised: 08.02.2022
Accepted: 28.02.2022

DOI: 10.15372/FGV20220403