SPACE RADIATION INVESTIGATIONS WITH LYULIN-TYPE INSTRUMENTS IN THE PERIOD 1989–2022

SPACE RADIATION INVESTIGATIONS WITH LYULIN-TYPE INSTRUMENTS IN THE PERIOD 1989–2022 Conference Abstracts

Conference

21st Annual International Scientific Conference «Space, Ecology, Safety»
21-25 Oct 2025 , София

Source

Space, Ecology, Safety (SES 2025) : Proceedings of 21st International Scientific Conference, Sofia, 21-25 Oct 2025
Compilation, Space Research and Technology Institute – Bulgarian Academy of Sciences. Sofia, Bulgaria.2025. 373 c.

Output data

Year: 2025, Pages: 9-15 Pages count : 7

Tags

Liulin spectrometer-dosimeters, space radiation, galactic cosmic rays, radiation belts

Authors

Dachev Tsvetan ¹ , Tomov Borislav ¹ , Matviichuk Yuriy ¹ , Mitev Mityo ¹ , Yordanova Malina ¹ , Semkova Jordanka ¹ , Benghin Victor ² , Shurshakov Viacheslav ² , Haeder Donat-Peter ³ , Horneck Gerda ⁴ , Reitz Guenther ⁴ , Spurni Frantisek ⁵ , Ploc Ondrej ⁵ , Tobiska William ⁶ , Hogan Benjamin ⁶ , Gersey Brad ⁶

Affiliations

1	Space Research and Technology Institute – Bulgarian Academy of Sciences
2	State Scientifc Center of Russian Federation, Institute of Biomedical Problems, Moscow, Russia
3	Department of Biology, Friedrich-Alexander Universität Erlangen-Nürnberg, Möhrendorf, Germany
4	DLR, Institute of Aerospace Medicine, Köln, Germany
5	Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
6	Space Weather Division, Space Environment Technologies, Los Angeles, CA, USA

The first Liulin-type spectrometers-dosimeter was developed in connection with the scientific program of the second Bulgarian cosmonaut Alexander Alexandrov in 1986–1988. It worked on the Mir space station from 1988 until 1994. Until 2022, 35 Liulin-type spectrometers-dosimeters were developed. Twenty one of them were tested and qualified for operation in space. Three of these twenty dosimeters did not reach the planned orbits around the Earth and Mars due to technical problems with the carriers. The scientific programs of 12 of these 20 Liulins were to measure the variations of the flux and dose rate of cosmic radiation on satellites, space stations in orbit around the Earth. Two instruments conducted measurements in interplanetary space and around the Moon and Mars: The RADOM instrument operated on the track to Moon and in circular orbit around the Moon. The Liulin-MO dosimeter is active since 2016 on the track and in a 400 km circular orbit around Mars. The scientific objectives of eight spectrometers were to support biological and chemical experiments in space with up-to-date information on the history of dose accumulation. This paper presents the most interesting scientific results on the dose and flux of cosmic radiation obtained recently.

Dachev T. , Tomov B. , Matviichuk Y. , Mitev M. , Yordanova M. , Semkova J. , Benghin V. , Shurshakov V. , Haeder D-P. , Horneck G. , Reitz G. , Spurni F. , Ploc O. , Tobiska W. , Hogan B. , Gersey B.
SPACE RADIATION INVESTIGATIONS WITH LYULIN-TYPE INSTRUMENTS IN THE PERIOD 1989–2022
In compilation Space, Ecology, Safety (SES 2025) : Proceedings of 21st International Scientific Conference, Sofia, 21-25 Oct 2025. – Space Research and Technology Institute – Bulgarian Academy of Sciences., 2025. – C.9-15.

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