CMOS Image Dataset of ²⁴¹Am Alpha-Particle Detection for Weighted Centroid Radiation Source Localization

A collimating structure with a circular aperture of 0.7 mm diameter and 1 mm length was used to produce a collimated alpha-ray beam, reducing the surface flux rate from 1.05 × 10⁴ cm⁻²s⁻¹ (without collimator) to 5.87 × 10³ cm⁻²s⁻¹ (with collimator). All experiments were conducted at room temperature (25 °C). Dataset Composition: The dataset comprises two categories of experiments:Static Source Localization Experiments: A total of 2600 image frames are collected under two experimental schemes with different initial coordinates and displacement configurations (horizontal and vertical), to evaluate the positioning accuracy and stability under static irradiation conditions.Moving Source Tracking Experiments: Two directional displacement paths (horizontal and vertical) are designed.

Each trial acquires 1000 consecutive image frames. The radiation source performs translational motion at a constant velocity of 1 mm/s with a fixed height of 6 mm above the sensor surface.