| 摘要 |
<p>The invention concerns the use as phosphor dot in a plasma or X-ray system, of a compound based on lanthanum phosphate comprising thulium. Said phosphate can further contain gadolinium. The compound thulium content, expressed in atomic % relative to lanthanum, ranges between 0.1 and 10, more particularly between 0.5 and 5. The invention also concerns a lanthanum phosphate characterised in that it comprises thulium and consists of particles of average size ranging between 1 and 20 νm and a dispersion index less than 0.6.</p> |
