Patent ID: 9721693
Date: 2017-08-01
CPC Classifications: B22F,C22C,G21K

Claim:
1. A collimator for x-ray, gamma, or particle radiation, the collimator comprising: a plurality of collimator elements made of a tungsten-containing material and configured to reduce scattered radiation; at least one of said collimator elements being formed of a tungsten alloy having a tungsten content of 72 to 98 wt.-%, said tungsten alloy containing 1 to 14 wt.-% of at least one metal selected from the group consisting of Mo, Ta, and Nb, and 1 to 14 wt.-% of at least one metal selected from the group consisting of Fe, Ni, Co, and Cu; and wherein a mean number of tungsten grains over a thickness of said at least one collimator element is greater than 5, a thickness of said at least one collimator element is 50 to 250 μm, and a homogeneity factor HF is ≦0.5.