Research output: Contribution to journal › Article › peer-review
In-situ imaging of tungsten surface modification under ITER-like transient heat loads. / Vasilyev, A. A.; Arakcheev, A. S.; Bataev, I. A. et al.
In: Nuclear Materials and Energy, Vol. 12, 01.08.2017, p. 553-558.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - In-situ imaging of tungsten surface modification under ITER-like transient heat loads
AU - Vasilyev, A. A.
AU - Arakcheev, A. S.
AU - Bataev, I. A.
AU - Bataev, V. A.
AU - Burdakov, A. V.
AU - Kandaurov, I. V.
AU - Kasatov, A. A.
AU - Kurkuchekov, V. V.
AU - Mekler, K. I.
AU - Popov, V. A.
AU - Shoshin, A. A.
AU - Skovorodin, D. I.
AU - Trunev, Yu A.
AU - Vyacheslavov, L. N.
N1 - Publisher Copyright: © 2016 The Authors
PY - 2017/8/1
Y1 - 2017/8/1
N2 - Experimental research on behavior of rolled tungsten plates under intense transient heat loads generated by a powerful (a total power of up to 7 MW) long-pulse (0.1–0.3 ms) electron beam with full irradiation area of 2 cm2 was carried out. Imaging of the sample by the fast CCD cameras in the NIR range and with illumination by the 532 nm continuous-wave laser was applied for in-situ surface diagnostics during exposure. In these experiments tungsten plates were exposed to heat loads 0.5–1 MJ/m2 with a heat flux factor (Fhf) close to and above the melting threshold of tungsten at initial room temperature. Crack formation and crack propagation under the surface layer were observed during multiple exposures. Overheated areas with excessive temperature over surrounding surface of about 500 K were found on severely damaged samples more than 5 ms after beam ending. The application of laser illumination enables to detect areas of intense tungsten melting near crack edges and crack intersections.
AB - Experimental research on behavior of rolled tungsten plates under intense transient heat loads generated by a powerful (a total power of up to 7 MW) long-pulse (0.1–0.3 ms) electron beam with full irradiation area of 2 cm2 was carried out. Imaging of the sample by the fast CCD cameras in the NIR range and with illumination by the 532 nm continuous-wave laser was applied for in-situ surface diagnostics during exposure. In these experiments tungsten plates were exposed to heat loads 0.5–1 MJ/m2 with a heat flux factor (Fhf) close to and above the melting threshold of tungsten at initial room temperature. Crack formation and crack propagation under the surface layer were observed during multiple exposures. Overheated areas with excessive temperature over surrounding surface of about 500 K were found on severely damaged samples more than 5 ms after beam ending. The application of laser illumination enables to detect areas of intense tungsten melting near crack edges and crack intersections.
KW - PULSE ELECTRON-BEAM
KW - QSPA KH-50
KW - SIMULATION
KW - ELMS
UR - http://www.scopus.com/inward/record.url?scp=85007216959&partnerID=8YFLogxK
U2 - 10.1016/j.nme.2016.11.017
DO - 10.1016/j.nme.2016.11.017
M3 - Article
AN - SCOPUS:85007216959
VL - 12
SP - 553
EP - 558
JO - Nuclear Materials and Energy
JF - Nuclear Materials and Energy
SN - 2352-1791
ER -
ID: 8975804