Assessment of the radionuclide composition of "hot particles" sampled in the Chernobyl nuclear power plant fourth reactor unit.

Abstract

Fuel-containing materials sampled from within the Chernobyl Nuclear Power Plant (ChNPP) Unit 4 Confinement Shelter were spectroscopically studied for gamma and alpha content. Isotopic ratios for cesium, europium, plutonium, americium, and curium were identified, and the fuel burn-up in these samples was determined. A systematic deviation in the burn-up values based on the cesium isotopes in comparison with other radionuclides was observed. The studies conducted were the first ever performed to demonstrate the presence of significant quantities of 242Cm and 243Cm. It was determined that there was a systematic underestimation of activities of transuranic radionuclides in fuel samples from inside of the ChNPP Confinement Shelter, starting from 241Am (and going higher) in comparison with the theoretical calculations.

• Authors: Mikhail D Bondarkov, Viktor A Zheltonozhsky, Maryna V Zheltonozhskaya, Nadezhda V Kulich, Andrey M Maksimenko, Eduardo B Farfán, G Timothy Jannik, James C Marra
• Journal: Health physics (Health Phys) Vol. 101 Issue 4 Pg. 368-74 (Oct 2011) ISSN: 1538-5159 [Electronic] United States
• PMID: 21878762 (Publication Type: Journal Article, Research Support, U.S. Gov't, Non-P.H.S.)

Chemical References

• Air Pollutants, Radioactive
• Cesium
• Europium
• Plutonium
• Curium
• Americium

Topics

• Air Pollutants, Radioactive (analysis)
• Americium (analysis)
• Cesium (analysis)
• Chernobyl Nuclear Accident
• Curium (analysis)
• Environmental Monitoring (methods)
• Europium (analysis)
• Nuclear Power Plants
• Plutonium (analysis)
• Risk Assessment (methods)
• Spectrum Analysis (methods)
• Ukraine