静电离子阱中~ 6 He的β衰变模拟
Simulations of beta-decay of 6He in an Electrostatic Ion Trap
摘要：
囚禁的放射性原子为研究基本相互作用和对称性提供了令人兴奋的机会。例如，检测阱中的β衰变可以探测到源自弱相互作用中可能的张量或标量项的微小实验信号。这样的标量或张量项影响，例如，在β衰变过程中中微子和电子之间的角相关，从而探索超越标准模型性质的新物理学。本系统的重点是一种创新的离子捕获装置，静电离子束阱的新用途。这样的陷阱以前没有考虑过基本相互作用的研究，并表现出潜在的非常显着的优势，比其他计划。这些优点包括改进所研究的放射性核素的注入效率、扩展的无场区域、用于更好的效率和易于操作的离子束运动学以及用于电子和反冲原子计数器的大得多的立体角的潜力。讨论了俘获~ 6 He的β衰变，给出了初步的蒙特卡罗（MC）模拟和误差分析。
英文摘要：
Trapped radioactive atoms present exciting opportunities for the study of fundamental interactions and symmetries. For example, detecting beta decay in a trap can probe the minute experimental signal that originates from possible tensor or scalar terms in the weak interaction. Such scalar or tensor terms affect, e.g., the angular correlation between a neutrino and an electron in the beta-decay process, thus probing new physics of beyond-the-standard-model nature. The present system focuses on a novel use of an innovative ion trapping device, the Electrostatic Ion Beam Trap. Such a trap has not been previously considered for Fundamental Interaction studies and exhibits potentially very significant advantages over other schemes. These advantages include improved injection efficiency of the radionuclide under study, an extended field-free region, ion-beam kinematics for better efficiency and ease-of operation and the potential for a much larger solid angle for the electron and recoiling atom counters. The beta-decay of trapped 6He is discussed and preliminary Monte-Carlo (MC) simulation and error-analysis considerations are presented.
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