Enhanced growth of large-scale nanostructures with metallic ion precipitation in helium plasmas

S Kajita, S Kawaguchi, N Ohno, N Yoshida - Scientific reports, 2018 - nature.com
enhanced growth of large-scale fuzz by precipitating additional metallic particles during helium
plasma … The enhanced growth shown in this study increased the thickness by two orders …

Helium-plasma–induced straight nanofiber growth on HCP metals

S Kajita, T Nojima, T Okuyama, Y Yamamoto… - Acta Materialia, 2019 - Elsevier
… However, because almost no bubbles were found inside Ru FN and Re FN samples and
the enhanced growth occurred by precipitation of Re particles, other mechanism should have …

Helium plasma implantation on metals: Nanostructure formation and visible-light photocatalytic response

S Kajita, T Yoshida, D Kitaoka, R Etoh… - Journal of Applied …, 2013 - pubs.aip.org
… promote the growth of He bubbles. This is because the growth rate of helium bubbles can
be … There is a possibility that the inner porous structure by helium bubbles can enhance the …

Experimental mechanistic investigation of the nanostructuring of tungsten with low energy helium plasmas

P Fiflis, N Connolly, DN Ruzic - Journal of Nuclear Materials, 2016 - Elsevier
grow in the case of helium plasma exposure, however, neither the exposure to hydrogen nor
to neon caused significant growthhelium down the tendrils, which may be further enhanced

Morphological changes of tungsten surfaces by low-flux helium plasma treatment and helium incorporation via magnetron sputtering

S Iyyakkunnel, L Marot, B Eren, R Steiner… - … applied materials & …, 2014 - ACS Publications
… of formation and growth of helium bubbles can exhibit the … A similar, but enhanced outcome
is obtained when the … accelerates and enhances the nucleation and growth of bubbles…

Nanoscale modification of silicon and germanium surfaces exposed to low-energy helium plasma

M Thompson, L Magyar, C Corr - Scientific Reports, 2019 - nature.com
… , who discovered an enhanced nanowire growth regime where … a wire upstream within the
helium plasma. Millimeter-length … helium plasma these surface instabilities are able to grow

Helium effects on tungsten surface morphology and deuterium retention

Y Ueda, HY Peng, HT Lee, N Ohno, S Kajita… - Journal of Nuclear …, 2013 - Elsevier
… (fuzz), induced by helium plasma exposure at temperatures … between the erosion rate and
the growth rate, if the conditions … effects on enhanced erosion of W plasma facing materials. …

Formation process of tungsten nanostructure by the exposure to helium plasma under fusion relevant plasma conditions

S Kajita, W Sakaguchi, N Ohno, N Yoshida… - Nuclear …, 2009 - iopscience.iop.org
… in figure 2(a ), but was gradually enhanced with the helium fluence. In figure 2(c ), the depth
… We thought that the highly pressurized helium bubbles [11] play a role in the growth process…

Tungsten 'fuzz'growth re-examined: the dependence on ion fluence in non-erosive and erosive helium plasma

TJ Petty, MJ Baldwin, MI Hasan, RP Doerner… - Nuclear …, 2015 - iopscience.iop.org
… -varying helium (He) plasmagrowth conditions, and collectively analysed. The new analysis
allows for the reconciliation of fast high flux growth with commonly observed slower growth

The effects of high fluence mixed-species (deuterium, helium, beryllium) plasma interactions with tungsten

MJ Baldwin, RP Doerner, D Nishijima… - Journal of Nuclear …, 2009 - Elsevier
… W exposed to pure He plasma Many studies have identified deleterious effects induced by
helium plasmas on … Layer growth is diminished for low concentrations of plasma He up to f He …