| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an X ray or aγray scintillator crystal having no deliquescence and having no problem of concentration quenching though including emission centers at a high concentration.SOLUTION: In X ray orγray scintillator formed of a condensed phosphate represented by a following formula (1): MPO(1), M is one kind selected from a group consisting of praseodymium, neodymium, samarium, europium, terbium, dysprosium, holmium, erbium, thulium and ytterbium.</p> |
