Helium and deuterium implantation in tungsten at elevated temperatures

Cipiti, B.B.; Kulcinski, G.L.

doi:10.1016/j.jnucmat.2005.08.009

Cited by 86 publications

(56 citation statements)

References 4 publications

(3 reference statements)

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“…In our experiments, the local helium fluence is simultaneously increased. It has been reported that increasing helium fluence could enhance the coalescence and growth of helium bubbles [20]. Compared with the extent of surface damage between the molten positions and non-molten positions under analogy irradation conditions (N2 (~0.3 μm) and M1 (~0.2 μm), N4 (~1.2 μm) and M3 (~0.9 μm)), the molten positions suffer less damage.…”

Section: Comparison Of Surface Modifications On Molten and Non-moltenmentioning

confidence: 99%

Surface modification of molten W exposed to high heat flux helium neutral beams

Yuan

Greuner

Böswirth

et al. 2013

Journal of Nuclear Materials

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High heat flux tests with central heat flux of 10.5 MW/m 2 using helium neutral beams have been carried out on rolled tungsten. The energy of helium particles is 33 keV and the particle flux is 2×10 21 m -2 s -1 . An 80×65×3 mm 3 rolled tungsten plate is firstly exposed to a 4.6 s pulse resulting in partially molten surfaces. Thereafter the tungsten plate is irradiated by several helium pulses with fluences of 1.2-2.5×10 22 /m 2 and peak temperatures from 1450 to 2590 °C . The experiments show that: (1) helium-induced surface modification of the resolidified tungsten surface is very different from that of the non-molten surface; (2) the surface morphology of molten surface is closely related to the orientation of the resolidified grain; (3) the evolution of surface modifications, for both of the molten and non-molten tungsten surfaces, 2 indicates a strong dependence on the surface temperature and local helium fluence.

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Section: Comparison Of Surface Modifications On Molten and Non-moltenmentioning

confidence: 99%

Surface modification of molten W exposed to high heat flux helium neutral beams

Yuan

Greuner

Böswirth

et al. 2013

Journal of Nuclear Materials

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“…5). The experimental activities are performed through a collaboration between the University of North Carolina and ORNL (high base temperature, ∼850 • C, high energy, ∼1.3 MeV, pulsed implantation and anneals at 2000 • C over ∼1000 cycles to fluences of ∼10 20 He/m 2 ) [15] and, separately, by the University of Wisconsin in Madison (high temperature, ∼800 • C or more, modest energy, ∼10-100 keV, pulsed implantation to fluences of ∼10 22 He/m 2 ) [16].…”

Section: He Retention Studiesmentioning

confidence: 99%

Progress towards realization of a laser IFE solid wall chamber

Raffray¹,

Blanchard²,

Latkowski³

et al. 2006

Fusion Engineering and Design

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“…It is known that He irradiation leads to such structure modification as bubble formation, vacancy swelling, blistering, flaking, porous surface structure, depending on the irradiation conditions [1][2][3][4][5][6][7]. Retention of hydrogen isotopes in W is enhanced by pre-irradiation with He ions at energies of several keV [8][9][10][11][12], whereas sequential 500 eV He 473K significantly reduces the number of blisters [15].…”

Section: Introductionmentioning

confidence: 99%