ABSOLUTE EFFICIENCY OF RARE-EARTH OXYSULFIDE SCREENS IN REFLECTION MODE OBSERVATION

被引：21

作者：

GIAKOUMAKIS, GE

NOMICOS, CD

YIAKOUMAKIS, EN

EVANGELOU, EK

机构：

[1] TECHNOL INST CRETE,GR-73136 CANEA,GREECE

[2] AGIOS SAVVAS HOSP,DEPT MED PHYS,GR-11521 ATHENS,GREECE

来源：

PHYSICS IN MEDICINE AND BIOLOGY | 1990年 / 35卷 / 07期

关键词：

D O I：

10.1088/0031-9155/35/7/015

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The absolute efficiency of X-ray phosphor screens was studied in reflection mode observation for two phosphor materials widely used in X-ray applications, namely Y2O2S:Tb and Gd2O2S:Tb. The efficiency proved to depend on the tube voltage and on the screen thickness. Comparisons are given between the efficiency of the same screens in reflection and transmission mode observation. Theoretical calculations based on a uniform screen model give results that are in very good agreement with the experimental data.

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页码：1017 / 1023

页数：7

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