Lanthanum-induced X/Gamma-Rays

The hole allows the primary X-rays produced by the ²⁴¹Am or ⁶⁰Co sources to penetrate through the shields. A Lanthanum target is placed proximity of the detectors and in light of the primary X-Rays. Its secondary emission irradiates all the detectors that constitute BULLKID-DM with a precise energy of 33 keV.

In order to calibrate the detectors of the experiment, it is important to probe them with a very precise amount of energy and measure their response. One option currently under investigation is the possibility of exciting the 33 keV emission lines of Lanthanum using an external source of either ²⁴¹Am or ⁶⁰Co. The isothropic emission of X-rays allows to irradiate all the detectors that constitute BULLKID-DM as long as a Lanthanum target is placed inside the experimental volume and it is struck with high-energy X-rays such as those produced by ²⁴¹Am or ⁶⁰Co.