| 摘要 |
<p>Appts. comprises a vacuum chamber; an ionisation gun fixed to the chamber; a sample holder allowing the sample to be coated, to be held out of the ion beam in a position which is adjustable in translation in a given direction or in rotation around an axis perpendicular to the beam or both; and means for holding a piece of material e.g. carbon, to be deposited at an adjustable angle of incidence w.r.t. the beam and in a position in which it intercepts an adjustable fraction of the beam.</p> |
