Our current cesium source irradiator is nearing its end of life. In looking around, I have seen the standard Cesium137 irradiators and I know that would be fine and it would work for 25 years or more, but I was wondering if anyone had experiences with a Cobalt60 irradiator? I would assume that all of the ridiculous homeland security rules would still be in place because of the radioactive source, but they appear to be 10 times faster than cesium.
And then there is X-ray technology, about which I have heard bad things over the years. I would appreciate any input on the topic: good, bad, or indifferent.