Detection and measurement of penetrative radiation

Claim 1

A PHOSPHOR ELEMENT FOR USE IN THE DETECTION AND MEASUREMENT OF PENETRATIVE RADIATION SUCH AS GAMMA RAYS COMPRISING CALCIUM TUNGSTATE IN RELATIVELY SMALL AMOUNT HAVING OF ITSELF RELATIVELY SMALL EFFECTIVE DIMENSIONS FOR THE INTERCEPTION AND CONVERSION OF PENETRATIVE RADIATION TO MORE EASILY DETECTABLE AND MEASURABLE RADIATION IN OTHER RANGES OF THE SPECTRUM, AND A MATRIX OF RELATIVELY LARGE VOLUME CAPABLE OF CONDUCTING SAID LAST-NAMED RADIATION, SAID CALCIUM TUNGSTATE BEING SUBSTANTIALLY HOMOGENEOUSLY DISTRIBUTED THROUGHOUT SAID MATRIX WHEREBY THE ORIGINALLY RELATIVELY SMALL EFFECTIVE DIMENSIONS OF SAID CALCIUM TUNGSTATE FOR THE INTERCEPTION AND CONVERSION OF PENETRATIVE RADIATION ARE ENLARGED TO THE VOLUME OF SAID MATRIX, THE ELEMENT FORMED BY SAID CALCIUM TUNGSTATE AND SAID MATRIX BEING FORMED WITH AT LEAST ONE SECTION FOR EXPOSURE TO AND INTERCEPTION OF PENETRATIVE RADIATION AND AT LEAST ONE SECOND SECTION FOR EXPOSURE TO A DETECTING AND MEASURING DEVICE CAPABLE OF DETECTING AND MEASURING THE CONVERTED RADIATION, SAID FIRST AND SECOND SECTIONS BEING SPACED FROM ONE ANOTHER TO INSURE EXPOSURE OF THE PENETRATIVE RADIATION TO A SUBSTANTIAL PORTION OF THE VOLUME OF SAID ELEMENT.