Spin exchange of muonium in CdS

✍ Scribed by J.M. Gil; J. Piroto Duarte; R.C. Vilão; H.V. Alberto; N. Ayres de Campos; S.F.J. Cox

• Book ID: 103887129
• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 217 KB
• Volume: 404
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2008.11.159

✦ Synopsis

High-statistics, high frequency resolution mSR transverse-field time spectra were obtained on a highpurity CdS single crystal in the low temperature range where the shallow-donor muonium state is seen to ionize. A model by Senba was used to fit the data, considering a spin exchange of the muonium electron in the transition region from slow to fast spin-flip regimes. The phase shifts, collapse, and broadening observed in the high-field precession frequencies of the Mu state are explained by this model, implying the involvement of spin dynamics in the ionization process of the shallow-donor muonium state.