Precise study on muon transfer process between hydrogen isotopes with X-ray measurement

当μ子停在氢同位素混合物中时，较轻μ子原子中的μ子可能通过碰撞转移到较重的μ子原子中，形成另一个μ子原子。这种转移发生在主量子数之间。能隙越小，转移反应越快。建立了通过探测莱曼X射线估算基态μ子原子数的方法，并开始了μ子转移现象的直接测量。在预备实验中，延迟分量似乎只存在于dμ Kα X射线的时间谱中。为了提高X射线探测的时间分辨率，在加拿大TRUIM进行了直流μ子束流的μ子转移实验。去年对质量较好的第二轮试验数据进行了分析。今年对第一次实验运行的数据进行了分析，以改进数据的统计。衰变常数为71纳秒的延迟分量中的X射线约占dμ Kα X射线总数的30%。这几乎与由pμ原子转移的μ子组成的dμ原子的数目相同。在95%的置信水平上，证明了dμ Kβ X射线时间谱中存在类似的延迟分量。这一现象与dμ原子的存在密切相关。主量子数n=2的态可能有重要的贡献。

When a muon stops m the mixture of hydrogen isotopes, the muon in a lighter muonic atom may transfer to a heavier nudeus with collision, forming another muonic atom. This transfer takes place between the principal quantum number. The smaller the energy gap is, the faster the transfer reaction is. I have established the method to estimate the numbers of muonic atoms in the ground state by detecting Lyman X-rays, and started direct measurement of muon transfer phenomenon. In the preparatory experiment, a delay component seems to exist only in the time spectrum of dμ Kα X-rays. No other time spectra show similar delayed components.An experiment on muon transfer phenomenon was performed with DC muon beam in TRUIM, CANADA to improved time resolution of X-ray detection. The data of the second experimental run, whose quality is better, were analyzed last year. The data of the first experimental run were analyzed this year to improve the statistics of the data The number of dμ Kα. X-rays in the delayed component of decay constant of 71 nsec is found to be about 30% of the total number of dμ Kα X-rays. This is almost the same as the number of dμ atoms that consist of the muons transferring from of pμ atoms. The existence of the similar delayed component in the time spectrum of dμ Kβ X-rays was exduded with 95 % confidence level This phenomena is dosely related to the dμ atoms that consist of the muons transferring from of pμ atoms. The state of principal quantum number n=2 may have important dues.