May 15 – 20, 2022
Casino Conference Centre
Europe/Prague timezone

Analysis of the rolled cotton cloth fixed on the outer surface of the International Space Station using neutron activation analysis and complementary techniques

Not scheduled
6m
Casino Conference Centre

Casino Conference Centre

Reitenbergerova 4/95, Mariánské Lázně, Czech Republic
Poster Radionuclides in the Environment, Radioecology Environmental Radioactivity

Speaker

Dr Dmitrii Grozdov (Joint Institute for Nuclear Research)

Description

As part of the space experiment “Test”, a roll of cotton cloth fixed on the outer surface of the International Space Station for more than 10 years was delivered to the Earth in September 2019. The elemental composition of two fragments of the cloth, contaminated and clean, was determined using instrumental neutron activation analysis at the IBR-2 reactor. Along with 19 elements (Mg, Al, Cl, Ca, Ti, Cr, Mn, Fe, Co, Ni, Zn, Rb, Sr, Ag, Sb, Ba, Sm) determined on both fragments of the cloth, additional 20 elements (Na, Si, Sc, Cu, As, Se, Br, Mo, Zr, Cd, I, La, Ce, Eu, Ta, W, Re, Ir, Th, and U) were determined only on the contaminated fragment. The morphology of the rolled cotton cloth was characterized using Scanning Electron Microscopy. Gama and liquid beta spectroscopy were applied to measure the radioactivity of the cloth fragments. Possible sources of the determined chemical elements deposited on the cloth were discussed.

Primary authors

Mr Alexey Pryadka (Federal State Unitary Enterprise «Russian metrological institute of technical physics and radio engineering») Dr Alexey Safonov (Frumkin Institute of Physical Chemistry and Electrochemistry) Dr Dmitrii Grozdov (Joint Institute for Nuclear Research) Dr Inga Zinicovscaia (Joint Institute for Nuclear Research, Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering) Mr Nikita Yushin (Joint Institute for Nuclear Research)

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