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Gamma Irradiators

The NRL houses a 60Co irradiator with a dose rate and profile seen here. Samples and experiments are irradiated in a 6"-diameter dry tube. Due to the design of the loading elevator, the usable diameter for an experimental setup in the 6"-diameter tube is ~ 4". The usable height is limited by the falloff in the flux profile seen in the page linked above.

The NRL also houses a bench-top cesium irradiator. The space for sample irradiations is ~ 7.75" in length by 3.75" in diameter, and the dose rate in the sample irradiation can be seen here.

The NRL can provide gamma-only irradiations using multiple different irradiators:

  1. The highest dose rate is achievable using a Co-60 underwater irradiator that provides gamma rays of 1173 keV and 1332 keV for in-situ irradiation of devices.
  2. A benchtop irradiator is also available for low dose-rate testing.
  3. A spot irradiator makes use of a source collimator to enable in-situ radiation-damage testing of an electronic device while minimizing the dose received by other devices nearby on the test board.