Verdú J, Djekić S, Stahl S, Valenzuela T, Vogel M, Werth G, Beier T, Kluge H-J, Quint W
Institut für Physik, Johannes-Gutenberg-Universität, D-55099 Mainz, Germany.
Phys Rev Lett. 2004 Mar 5;92(9):093002. doi: 10.1103/PhysRevLett.92.093002.
We present an experimental value for the g factor of the electron bound in hydrogenlike oxygen, which is found to be g(expt)=2.000 047 025 4 (15)(44). The experiment was performed on a single 16O7+ ion stored in a Penning trap. For the first time, the expected line shape of the g-factor resonance is calculated which is essential for minimizing the systematic uncertainties. The measurement agrees within 1.1 sigma with the predicted theoretical value g(theory)=2.000 047 020 2 (6). It represents a stringent test of bound-state quantum electrodynamics to a 0.25% level. Assuming the validity of the underlying theory, a value for the electron mass is obtained: m(e)=0.000 548 579 909 6 (4) u. This value agrees with our earlier determination on and allows a combination of both values which is about 4 times more precise than the currently accepted one.
我们给出了类氢离子化氧中束缚电子的g因子的实验值，发现g（实验值）=2.0000470254(15)(44)。该实验是在存储于潘宁阱中的单个16O7+离子上进行的。首次计算了g因子共振的预期线形，这对于将系统不确定性降至最低至关重要。测量值与预测的理论值g（理论值）=2.0000470202(6)在1.1个标准差范围内相符。它对束缚态量子电动力学进行了0.25%水平的严格检验。假设基础理论有效，得到了电子质量的值：m(e)=0.0005485799096(4)u。该值与我们之前的测定结果一致，并允许将两个值合并，其精度比目前公认的值高约4倍。
