论文标题
从MEV尺度$ {\ rm e}^{pm} $的核β衰减后首次观察回旋子辐射。
First observation of cyclotron radiation from MeV-scale ${\rm e}^{pm}$ following nuclear beta decay
论文作者
论文摘要
我们提出了一种用于检测回旋辐射的设备，该设备允许在5 KEV至5 MEV范围内基于频率的β能量确定，这是核β衰变的特征。磁场中辐射β颗粒的回旋频率用于精确确定β能。我们的工作建立了采用基金会，以采用由项目8协作开发的回旋辐射发射光谱（CRES）技术，远远超出了18击tritium端点区域。我们报告了从19NE衰减的6He和Beta^+S的初步测量，以证明我们的检测系统的宽带响应，并评估在完整（MEV）能量范围内β光谱的潜在系统不确定性。这项工作是将CRE技术实际应用到各种核中的实际应用的重要基准，尤其是通过精确的beta-decay测量值开放了搜索TEV量表以外的新物理学的证据。
We present an apparatus for detection of cyclotron radiation that allows a frequency-based beta energy determination in the 5 keV to 5 MeV range, characteristic of nuclear beta decays. The cyclotron frequency of the radiating beta particles in a magnetic field is used to determine the beta energy precisely. Our work establishes the foundation to apply the cyclotron radiation emission spectroscopy (CRES) technique, developed by the Project 8 collaboration, far beyond the 18-keV tritium endpoint region. We report initial measurements of beta^-s from 6He and beta^+s from 19Ne decays to demonstrate the broadband response of our detection system and assess potential systematic uncertainties for beta spectroscopy over the full (MeV) energy range. This work is an important benchmark for the practical application of the CRES technique to a variety of nuclei, in particular, opening its reach to searches for evidence of new physics beyond the TeV scale via precision beta-decay measurements.
