TABLE 1

Comparison of Some Characteristics of Pure Materials Used in Pinhole Inserts (29)

MaterialAtomic numberDensity (g/cm3)μtotal (cm−1) at 140 keV
Lead8211.3527.2
Tungsten7419.3*36.4
Gold7919.3242.7
Platinum7821.4545.8
Iridium7722.4146.4
Uranium9218.9558.1
  • * Value is for pure tungsten, whereas alloy used in this work had density of 18.5 with fractional tungsten content of 0.97.