Precise Q value determinations for forbidden and low energy $$\beta $$-decays using Penning trap mass spectrometry
Precise Q value determinations for forbidden and low energy $$\beta $$-decays using Penning trap mass spectrometry
复制标题
使用潘宁陷阱质谱法精确确定禁能和低能 $$eta $$ 衰变的 Q 值
DOI：
10.1140/epja/s10050-023-00925-9
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Redshaw, Matthew
中科院分区：
文献类型：
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作者：
Redshaw, Matthew
核衰变为研究核介质内发生的弱衰变提供了一个实验室。这提供了有关由此产生的微妙核和原子效应、以及所涉及粒子（特别是中微子）的潜在相互作用和特性的信息。衰变的 Q 值对应于母原子和子原子之间质量差的能量当量，并且可以使用潘宁陷阱质谱法精确测量。在本文中，我们讨论了长寿命原初核素禁衰变的潘宁陷阱 Q 值测量，以及可能在子核中经历非常低的能量衰变到激发态的不稳定核素子集的测量。我们讨论了这些测量在执行精确光谱测量的探测器系统学测试中的应用，作为理论形状因子、电子分支比和半衰期计算的输入，并识别可作为直接中微子质量测定实验中新候选者的核素。
Nuclear-decay provides a laboratory for investigating weak decays occurring inside the nuclear medium. This provides information on the resulting subtle nuclear and atomic effects, and on the underlying interaction and the properties of the particles that are involved, particularly of the neutrino. The Q value of the decay corresponds to the energy equivalent of the mass difference between parent and daughter atoms, and can be precisely and accurately measured using Penning trap mass spectrometry. In this paper we discuss Penning trap Q value measurements for forbidden-decays of long-lived primordial nuclides, and for a subset of-unstable nuclides that could potentially undergo a very low energy decay to an excited state in the daughter nucleus. We discuss applications of these measurements to tests of systematics in detectors that perform precise-spectrum measurements, as inputs for theoretical shape factor, electron branching ratio and half-life calculations, and to identify nuclides that could serve as new candidates in direct neutrino mass determination experiments.