Method of determining lanthanidies in a transition element host

Patent · Tue Feb 03 00:00:00 EST 1976

OSTI ID:862460

De Kalb, Edward L ^[1]; Fassel, Velmer A ^[1]

---

1. Ames, IA

A phosphor composition contains a lanthanide activator element within a host matrix having a transition element as a major component. The host matrix is composed of certain rare earth phosphates or vanadates such as YPO.sub.4 with a portion of the rare earth replaced with one or more of the transition elements. On X-ray or other electromagnetic excitation, trace lanthanide impurities or additives within the phosphor are spectrometrically determined from their characteristic luminescence.

• Research Organization: Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
• DOE Contract Number: W-7405-ENG-82
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 3936633
• OSTI ID: 862460
• Country of Publication: United States
• Language: English

Related Subjects

method
determining
lanthanidies
transition
element
host
phosphor
composition
contains
lanthanide
activator
matrix
major
component
composed
rare
earth
phosphates
vanadates
ypo
portion
replaced
elements
x-ray
electromagnetic
excitation
trace
impurities
additives
spectrometrically
determined
characteristic
luminescence
composition contains
rare earth
transition elements
transition element
major component
phosphor composition
host matrix
/378/252/