Title: Neutron Beam Shaping by Ghost Projection Show Chinese title

Title: 通过幽灵投影的中子束整形

Abstract: We present a method to shape a neutron beam and project any specified target image using a single universal patterned mask that is transversely displaced. The method relies on ``ghost projection'', which is a reversed form of classical ghost imaging. A set of sub-mask regions that combine to construct the required beam shape is computed; illumination of each region with the determined exposure time projects the shaped beam. We demonstrate this method experimentally, using the Dingo neutron imaging beamline at the OPAL nuclear research reactor (Australia). The ability to shape a neutron beam ``on demand'' allows selective dose delivery away from sensitive areas of samples, such as in cultural heritage artifacts. It also benefits irradiation techniques, e.g., in testing resilience of electronic components for space and defense technologies or neutron therapies. Show Chinese abstract

Abstract: 我们提出一种方法，使用一个横向位移的通用图案掩模来整形中子束并投射任何指定的目标图像。 该方法依赖于“鬼投影”，这是经典鬼成像的反向形式。 计算一组子掩模区域，这些区域组合起来可构建所需的束流形状；用确定的曝光时间照射每个区域，即可投射出整形后的束流。 我们通过实验演示了这种方法，使用的是澳大利亚OPAL核研究反应堆的Dingo中子成像束线。 能够按需整形中子束，允许将剂量选择性地输送到样品的敏感区域之外，例如在文化遗产文物中。 它还对辐照技术有益，例如在测试用于航天和国防技术的电子元件的抗辐射能力或中子治疗中。