Recent Observations of Space Radiation Environment in a Human Phantom onboard ISS by Liulin-5 Particle Telescope

Paper number

IAC-11,A1,4,4,x10314

Author

Dr. Jordanka Semkova, Space Research and Technologies Institute, Bulgarian Academy of Sciences, Bulgaria

Coauthor

Mr. Stefan Maltchev Maltchev, Space and Solar-Terrestrial Research Institute, Bulgarian Academy of Sciences, Bulgaria

Coauthor

Mr. Nikolay Bankov, Space and Solar-Terrestrial Research Institute, Bulgarian Academy of Sciences, Bulgaria

Coauthor

Dr. Victor Benghin, State Scientific Center of Russian Federation, Institute of Biomedical Problems, Russian Academy of Sciences, Russia

Coauthor

Dr. Vyacheslav Shurshakov, State Scientific Center of Russian Federation, Institute of Biomedical Problems, Russian Academy of Sciences, Russia

Coauthor

Dr. Vladislav Petrov, State Scientific Center of Russian Federation, Russia

Coauthor

Mr. Sergey Drobyshev, State Scientific Center of Russian Federation, Institute of Biomedical Problems, Russian Academy of Sciences, Russia

Coauthor

Dr. Giovanni De Angelis, LLC MDA IS, Russia

Year

2011

Abstract

The radiation field in the International Space Station (ISS) is complex, composed by galactic cosmic rays, trapped radiation of the Earth radiation belts, solar energetic particles, albedo particles from Earth’s atmosphere and the secondary radiation produced in the shielding materials of the spacecraft and in human body. 
An essential parameter for assessment of radiation hazards to human in space is the organ dose determination. Human phantoms equipped with active and passive radiation detectors are used to obtain a better knowledge of the dose distribution inside the human body.
The Liulin-5 charged particle telescope has directly observed the radiation environment in the tissue -equivalent phantom of MATROSHKA-R international project on ISS during the period June 2007-June 2010. The objectives of Liulin-5 experiment are studying the dynamics of depth-dose distribution of the different components of the orbital radiation field in a human phantom and mapping the radiation environment and its variations with time and orbital parameters (such as solar cycle, solar flare events, inclination and altitude). The particle telescope Liulin-5 measures time resolved linear energy transfer spectrum, flux and absorbed dose rates for electrons, protons and the biologically relevant heavy ion components of the cosmic radiation.
In this report we present new results of Liulin-5 experiment for radiation quantities obtained from different components of the complex radiation field in low-Earth orbit and comparison with data from other radiation detectors on ISS.

Abstract document

IAC-11,A1,4,4,x10314.brief.pdf

Manuscript document

IAC-11,A1,4,4,x10314.pdf (🔒 authorized access only).

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