Applications of Mo/Si multilayer mirrors for the moon-based extreme ultraviolet Camera (EUVC) require not only the
minimal residual stress, but also little stress changes in the temperature environment on lunar surface. Hence, we deposit
the 16.5 nm period Mo/Si multilayer mirror with a low as-deposited residual stress of -36 Mpa (compressive). The in-situ
and real time stress tests are measured in the temperature cycling range from 20 °C to 130 °C. The results indicate that
the stress gradually increases to the maximum of -100 MPa when heating up to 105 °C, then it gradually relaxes to 10
Mpa after thermal cycling to 130 °C. Such stress change has little influence on the performance of the Mo/Si multilayer
mirror.
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