https://doi.org/10.1140/epjc/s10052-023-11201-x
Regular Article - Experimental Physics
Effect of cosmic rays irradiation on the phase change characteristics of an on-orbit fixed point
1
College of Science, Xi’an Polytechnic University, 710048, Xi’an, China
2
Remote Sensing Calibration Laboratory, National Institute of Metrology, 100029, Beijing, China
3
College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, 610059, Chengdu, China
Received:
21
July
2022
Accepted:
4
January
2023
Published online:
25
January
2023
Using the phase change characteristics of fixed points to trace the temperature of a spaceborne calibration blackbody is an important technical means to carry out the high-precision on-orbit calibration of thermal infrared remote sensors. In contrast to an experimental environment on the ground, a fixed point will produce radiation damage in the high-energy cosmic rays environment and may affect the phase change characteristics. This study investigates the effect of radiation damage caused by cosmic rays irradiation on the phase change characteristics of fixed points in a spaceborne calibration blackbody. In this research, the simulation method of molecular dynamics was used to simulate the irradiation damage effect of a strong cosmic rays environment on fixed-point indium (In). The experimental system was established to measure the phase change curves of samples with different irradiation doses, and then, the influence of irradiation on the phase change characteristics of the samples was analyzed. The results showed that most of the energy of irradiation was deposited on the In fixed point, resulting in the migration of 0.3% of the displacement atoms inside the In to the gap position to form the Frenkel pairs (FPs). The overcooling of the irradiated In fixed point was reduced by 0.3 , the phase change temperature was increased by 30 mK, and the phase change plateau was more stable.
© The Author(s) 2023
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Funded by SCOAP3. SCOAP3 supports the goals of the International Year of Basic Sciences for Sustainable Development.