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

当一个介子停在氢同位素的混合物中时，较轻的介子原子中的介子可能通过碰撞转移到较重的原子核上，形成另一个介子原子。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射线估计基态μ子原子数的方法，并开始了对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。没有其他时间谱显示类似的延迟分量。为了提高x射线探测的时间分辨率，在加拿大TRUIM用直流介子束进行了介子转移现象实验。去年对质量较好的第二次实验数据进行了分析。对今年首次实验运行的数据进行了分析，提高了对数据dμ Kα数的统计。在衰变常数为71 nsec的延迟分量中的x射线约占dμ Kα x射线总数的30%。这几乎与由从pμ原子转移的μ子组成的dμ原子的数目相同。在dμ Kβ x射线的时间谱中存在类似的延迟分量，其置信度为95%，这种现象与由pμ原子转移的介子组成的dμ原子有剂量关系。主量子数n=2的状态可能有重要的影响。

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.