Physical and chemical interactions of energetic tritium with boron carbide

Boothe, Thomas E.; Ache, Hans J.

doi:10.1016/0022-3115(79)90151-x

Cited by 7 publications

(1 citation statement)

References 29 publications

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“…A number of data on boron carbide for fusion applications have been reported concerning chemical erosion [2][3][4][5][6][7][8][9], physical sputtering [10][11][12][13][14], and retention of hydrogen isotopes [15][16][17][18][19][20][21][22][23]. Data on the transport properties of hydrogen isotopes in boron carbide structures were compiled by Grossman et al [24].…”

Section: Introductionmentioning

confidence: 99%

Deuterium retention in sintered boron carbide exposed to a deuterium plasma

Alimov

Комаров

Roth

et al. 2006

Journal of Nuclear Materials

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Depth profiles of deuterium up to a depth of 10 lm have been measured using the D( 3 He,p) 4 He nuclear reaction in a resonance-like technique after exposure of sintered boron carbide, B 4 C, at elevated temperatures to a low energy (%200 eV/ D) and high ion flux (%10 21 m À2 s À1 ) D plasma. The proton yield was measured as a function of incident 3 He energy and the D depth profile was obtained by deconvolution of the measured proton yields using the program SIMNRA. D atoms diffuse into the bulk at temperatures above 553 K, and accumulate up to a maximum concentration of about 0.2 at.%. At high fluences (P10 24 D/m 2 ), the accumulation in the bulk plays a major role in the D retention. With increasing exposure temperature, the amount of D retained in B 4 C increases and exceeds a value of 2 · 10 21 D/m 2 at 923 K. The deuterium diffusivity in the sintered boron carbide is estimated to be D = 2.6 · 10 À6 exp{À(107 ± 10) kJ mol À1 /RT} m 2 s À1 .

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