Moscow State University Activities on Research of Space Environment Effect on Materials

2004 ◽  
Vol 851 ◽  
Author(s):  
Lev S. Novikov
Keyword(s):  
Nuclear Physics ◽  
Atomic Oxygen ◽  
Space Environment ◽  
Future Research ◽  
Surface Erosion ◽  
State University ◽  
Environment Effect ◽  
Spacecraft Charging ◽  
Skobeltsyn Institute ◽  
Moscow State University

ABSTRACTMain areas of Skobeltsyn Institute of Nuclear Physics Moscow State University activities in study of space environment effect on materials are following: effect of space radiation on spacecraft materials and equipment elements, spacecraft charging in space plasma in various orbits, influence of atomic oxygen flux on materials in LEO, surface erosion and destruction under impact of micrometeoroids and small particles of space debris.The methods of computer and laboratory modeling used are described. Results of the researches are presented, as far as some experiments onboard the MIR station and ISS are described. Principle problems for contemporary and future research are proposed for discussion. Principle problems for contemporary and future research are proposed for discussion.

Space Environment Effect on Fluorinated Polymers

2003 ◽  
Vol 792 ◽  
Author(s):  
M. Chipara ◽  
D. L. Edwards ◽  
J. Zaleski ◽  
B. Hoang ◽  
B. Przewoski ◽  
...  
Keyword(s):  
Atomic Oxygen ◽  
Low Earth Orbit ◽  
Space Environment ◽  
Fluorinated Polymers ◽  
Space Applications ◽  
Environment Effect ◽  
Low Altitude ◽  
Low Earth Orbits ◽  
Degradation Of Materials ◽  
Earth Orbits

ABSTRACTThe effects of the space environment on polytetrafluorethylene and some fluorinated polymers, copolymers, and blends are critically reviewed. It is shown that in low altitude orbits such as Low Earth Orbit and Geostationary Orbit the presence of both ionizing radiation and atomic oxygen triggers a synergetic degradation of materials based on fluorinated polymers. The behavior is due to the lability of the in-chain alkyl radical to oxygen attack. It is concluded that fluorinated polymers should not be used as materials for space applications, as long as the mission implies low Earth orbits.

scholarly journals Research on experimental method of carbon nanotubes space environment effect

2021 ◽  
Vol 268 ◽  
pp. 01065
Author(s):  
Man Li ◽  
Yuming Liu ◽  
Naiyuan Cui ◽  
Qiang Yu ◽  
Yu Li ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Atomic Oxygen ◽  
Space Debris ◽  
High Vacuum ◽  
Space Environment ◽  
Superior Performance ◽  
Space Technology ◽  
Physical Damage ◽  
Environment Effect ◽  
Experimental Scheme

Due to its unique structure and superior performance, carbon nanotubes are proposed to have great potential applications in many fields. Recently, more and more concerns have been focused on the application of carbon nanotubes in space technology. It is believed that carbon nanotubes can have a broad impact on space missions in future with benefits principally in space technology, such as lightweight structure materials, environment protection materials, energy gerneration and storage and nanoelcetronics. However, carbon nanotubes would suffer chemical and physical damage from the space environment when it was used in spacecraft, just like all the other space materials. The environment where spacecrafts operate is extremely intricate, primarily represented by electromagnetic irradiation, charged particle irradiation, high vacuum, cold and hot alternation, atomic oxygen erosion, clash from space debris, and other factors. The mostly effect in space environment is atomic oxygen and debris for grapheme. This paper is about the research on the experimental methods of carbon nanotubes space environment effect with atomic oxygen and space debris as examples, in a bid to propose the experimental scheme of carbon nanotubes space environment effect. It will be great helpful to promote the applications of carbon nanotubes in space technology.

scholarly journals Research work of schoolchildren related to the use of computer modeling in problems of nuclear physics

2020 ◽  
pp. 160-169
Author(s):  
Evgeny A. Mikhailov ◽  
Evgeny V. Shirokov
Keyword(s):  
Secondary School ◽  
Nuclear Physics ◽  
Research Work ◽  
State University ◽  
Radiation Background ◽  
Computer Methods ◽  
Research Activities ◽  
Short Course ◽  
The Subject ◽  
Moscow State University

The article presents the experience of organizing research activities of schoolchildren at the Institute of Nuclear Physics and the Faculty of Physics of Moscow State University. The subject matter of the works is connected with different sections of nuclear physics, the study of which is especially important in secondary school. In the process of preparing for their implementation schoolchildren listen to a short course devoted to computer methods in physics. They then develop programmes to simulate various nuclear phenomena. A laboratory experiment is then conducted to check and correct the results of the simulation. The article presents two examples of works, the authors of which have successfully performed at various scientific and practical conferences for schoolchildren. The first one is related to the absorption of gamma radiation and the second to the study of cosmic radiation background. It is especially important to note that these works were conducted with pupils of Lyceum № 87 of Nizhny Novgorod in a partly remote format. This suggests that such work can be successfully performed by schoolchildren living in other cities and not having the opportunity to visit the laboratory frequently.

MODELING RADIATION LOADING OF RADIATION MONITOR RADOM ONBOARD SPACE VEHICLE "CHANDRAYAAN 1" DURING ITS FLIGHT WITHIN EARTH'S MAGNETOSPHERE

2021 ◽  
Vol 55 (1) ◽  
pp. 76-81
Author(s):  
V.G. Mitrikas ◽  
Keyword(s):  
Nuclear Physics ◽  
Solar Minimum ◽  
Space Vehicle ◽  
Absorbed Dose ◽  
Forecast Model ◽  
Radiation Environment ◽  
State University ◽  
The Moon ◽  
Physics Institute ◽  
Moscow State University

Planners of a crewed mission to the Moon should have confidence in reliability of radiation dose estimations. In the absence of proton events during solar minimum the absorbed dose to the crew crossing the magnetosphere will be contributed primarily by protons and electrons of the inner and outer radiation belts of Earth, respectively. It is necessary to examine whether the existing electron forecast model is good enough for this purpose. The paper describes our efforts to model the radiation environment of RADOM onboard Chandrayaan 1 launched to the Moon on 22.10.2008, including the vehicle design in order to assess its shielding function. The geomagnetic field parameters were reproduced with the use of model А2000 developed at the Nuclear Physics Institute (Moscow State University). The absorbed doses were calculated with the help of standard Canopus-80 tools. Comparison of calculated and experimental data showed a good agreement for the period of solar minimum and quiet geomagnetic conditions.

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