Developments for the Single-Molecule Fluorescence Imaging Technique Envisaged to Detect the Neutrinoless Double β-Decay Process

该项目的第一个也是主要目标是设计和建造一个由228 Th源产生的低强度，低能量和纯双电荷镭束，以证明单分子荧光成像的灵敏度，该技术旨在检测NEXT实验中的无中微子双β衰变。该装置还将用于通过质量选择元件和/或放射性检测器的组合来分析放射源的成分。将通过在低压惰性气体气氛中从232 U注入热化反冲产生228 Th源，并将所获得的产品与通过不同方法产生的其他228 Th源进行比较。该项目的另一个目标是了解和表征在从未达到的压力条件下工作的RF地毯中离子的流动性。将研究影响离子迁移率的RF地毯的主要设计参数。这种设置也可以作为未来在高压下使用RF地毯（如NEXT和FRS离子捕集器）进行实验的测试台。所有获得的结果将发表在相关的主题期刊上。

The first and main objective of the project is the design and construct a low-intensity, low-energy, and pure doubly-charged radium beam generated from a 228Th source to demonstrate the sensitivity of the Single Molecule Fluorescence Imaging, a technique envisaged to detect the neutrinoless double beta decay in the NEXT experiment. This setup will also be used to analyze the composition of radioactive sources via a combination of mass selective elements and/or radioactivity detectors. A 228Th source will be produced via implantation of thermalized recoils from 232U in a low-pressure noble gas atmosphere and the products obtained will be compared to other 228Th sources produced via different methods. Another objective foreseen in the project is to understand and characterize the mobility of ions in RF Carpets which work under pressure conditions never reached before. The main design parameters of the RF Carpet which affect the mobility of the ions will be studied. This setup can also serve as a test bench for future experiments using RF Carpets at high pressures like NEXT and the FRS Ion Catcher. All the obtained results will be published in topic-related journals.