Californium-252 is used as a neutron calibration source for passive neutron correlation counting. Source age and isotopic information are needed to make decay corrections to the neutron emission rate due to the influence of ²⁵⁰Cf. Gamma-ray signatures present in the spectrum from spontaneous fission products and odd-numbered Cf isotopes can be used with high accuracy to confirm or query declared values on a technical data sheet. This method is good practice for independently verifying the content of ²⁵²Cf calibration sources.

中文翻译：

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使用高分辨率伽马能谱表征²⁵² Cf源

for 252用作中子校准源，用于被动中子相关计数。由于²⁵⁰ Cf的影响，需要使用源年龄和同位素信息来对中子发射速率进行衰减校正。自发裂变产物和奇数Cf同位素的光谱中存在的伽马射线特征可以高精度地用于确认或查询技术数据表上的声明值。该方法是独立验证²⁵² Cf校准源含量的良好实践。