MODELING OF PLASMA INTERACTION WITH FIRST WALL IN FUSION REACTOR - MEASURING RESIDUAL MECHANICAL STRESSES IN TUNGSTEN AFTER IRRADIATION AT GOL-3 FACILITY
A. S. Arakcheev1,2, A. N. Shmakov3, M. R. Sharafutdinov1,4, B. P. Tolochko1,4, V. A. Popov1,2, A. A. Shoshin1,2, A. A. Vasilyev1,2, D. I. Skovorodin1,2, S. V. Polosatkin1,5, A. V. Burdakov1,5, I. A. Bataev1,5, V. A. Bataev1,5
1Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2Novosibirsk National Research State University, Novosibirsk, Russia
3Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
4Institute of Solid State Chemistry and Mechanical Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
5Novosibirsk State Technical University, Novosibirsk, Russia
Keywords: взаимодействие плазмы с материалами, остаточные напряжения, синхротронное излучение, дифракция, interaction of plasma with materials, residual stresses, synchrotron radiation, diffraction
Abstract
Residual stresses in rolled tungsten after pulsed irradiation with a plasma and an electron beam at the GOL-3 facility were measured. The mechanical stresses were derived from the strain, which was measured by the change in the interplanar distance in different directions. The interplanar distance was gaged from the shift of the peak of diffraction scattering of X-rays. The measured tension turned out to be a tensile stress along the surface. The tension along the direction of rolling and grinding was approximately three times larger than that in the perpendicular direction. The work was carried out at the VEPP-3/VEPP-4 complex.
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