TY - JOUR

T1 - ОБЗОР РАБОТ В ИЯФ СО РАН ПО ТЕМАТИКЕ ПЛАЗМА—ПОВЕРХНОСТЬ

AU - Shoshin, A. A.

AU - Burdakov, A. V.

AU - Kandaurov, I. V.

AU - Kasatov, A. A.

AU - Kazantsev, S. R.

AU - Balash, I. I.

AU - Popov, V. A.

AU - Ryzhkov, G. A.

AU - Cherepanov, D. E.

AU - Kuzmin, E. I.

AU - Polosatkin, S. V.

AU - Ivanov, I. A.

AU - Arakcheev, A. S.

AU - Vasilyev, A. A.

PY - 2024

Y1 - 2024

N2 - Since the 1990s, comprehensive studies of the interaction of powerful plasma flows, electron beams, and lasers with solid bodies have been conducted in BINP under the loads expected at the first wall of a fusion reactor. The experiments were first performed on the GOL-3 facility, then on the BETA bench. At the moment, new experimental facilities are being set up, including the Plasma Station at the under-construction SKIF synchrotron radiation source, and a new-generation open-trap GDMT reactor is being designed. The properties of near-surface plasma and its dynamics (density, temperature, velocity, charge composition) were investigated using the developed diagnostic complex of the GOL-3 multimirror trap. Surface modification of various materials (tungsten, graphite, ceramics) under different pulse thermal loads was studied. The use of electron beam on the BETA bench allowed in situ observation of surface modification processes during thermal shock, which is unavailable for plasma impact facilities. Comparison with the data of other researchers has been made and their consistency with each other has been shown. Thresholds for cracking and melting of tungsten, explosive (brittle) fracture of graphite were obtained. Synchrotron radiation was used to study stresses in materials, with which stresses during pulse irradiation are measured with high temporal resolution. Experimental work is supplemented by theoretical and computational studies. A model of tungsten fracture was proposed, according to which stresses leading to tungsten cracking occur at the cooling stage. Then, for the first time in the world, the appearance of cracks significantly later than the thermal load was observed experimentally on the BETA bench.

AB - Since the 1990s, comprehensive studies of the interaction of powerful plasma flows, electron beams, and lasers with solid bodies have been conducted in BINP under the loads expected at the first wall of a fusion reactor. The experiments were first performed on the GOL-3 facility, then on the BETA bench. At the moment, new experimental facilities are being set up, including the Plasma Station at the under-construction SKIF synchrotron radiation source, and a new-generation open-trap GDMT reactor is being designed. The properties of near-surface plasma and its dynamics (density, temperature, velocity, charge composition) were investigated using the developed diagnostic complex of the GOL-3 multimirror trap. Surface modification of various materials (tungsten, graphite, ceramics) under different pulse thermal loads was studied. The use of electron beam on the BETA bench allowed in situ observation of surface modification processes during thermal shock, which is unavailable for plasma impact facilities. Comparison with the data of other researchers has been made and their consistency with each other has been shown. Thresholds for cracking and melting of tungsten, explosive (brittle) fracture of graphite were obtained. Synchrotron radiation was used to study stresses in materials, with which stresses during pulse irradiation are measured with high temporal resolution. Experimental work is supplemented by theoretical and computational studies. A model of tungsten fracture was proposed, according to which stresses leading to tungsten cracking occur at the cooling stage. Then, for the first time in the world, the appearance of cracks significantly later than the thermal load was observed experimentally on the BETA bench.

KW - ceramics

KW - first wall

KW - fusion reactor

KW - graphite

KW - powerful energy flows

KW - pulse heating

KW - synchrotron radiation

KW - thermal shocks

KW - tungsten

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85199385967&origin=inward&txGid=8b20d9494b917ab84ed93cb23f3a3457

UR - https://www.mendeley.com/catalogue/2484a2e0-f03e-3650-9cbd-9b99d0317b13/

U2 - 10.21517/0202-3822-2024-47-1-65-75

DO - 10.21517/0202-3822-2024-47-1-65-75

M3 - статья

VL - 47

SP - 65

EP - 75

JO - Problems of Atomic Science and Technology, Series Thermonuclear Fusion

JF - Problems of Atomic Science and Technology, Series Thermonuclear Fusion

SN - 0202-3822

IS - 1

ER -