Formation of metastable {ital dt}{mu} molecules in {ital t}{mu}(2{ital s})-{ital D}{sub 2} collisions
- Department of Quantum Chemistry, Box 518, S-75120 Uppsala (Sweden)
The formation process of metastable {ital dt}{mu} molecules in {ital D}{sub 2}-{ital T}{sub 2} mixtures is investigated. The {ital dt}{mu} molecule exhibits a series of three-body resonances embedded in the {ital t}{mu}+{ital d} scattering continuum just below the {ital t}{mu}(2{ital s})+{ital d} threshold. These states can be formed in collisions of {ital excited} {ital t}{mu}(2{ital s}) atoms with {ital D}{sub 2} molecules, whereby the excess of binding energy is absorbed by the rovibrational degrees of freedom of {ital D}{sub 2}. We present a scattering-theoretic model for this process, and perform a numerical calculation of its cross section. The essential transition amplitudes are obtained from three-body wave functions for the {ital dt}{mu} subcluster, and adiabatic wave functions for the entire hybrid system in the final channel. It is found that the effective formation rate is limited by the Auger-transition rates of the molecular complex formed. The calculated cross sections exhibit broad {open_quote}{open_quote}peaks,{close_quote}{close_quote} with magnitudes large enough for the formation process to favorably compete with deexcitation of {ital t}{mu}({ital n}=2) atoms via radiative and collisional processes. The formation of metastable {ital dt}{mu} can therefore be one of the fastest processes depleting the {ital n}=2 levels of the {ital t}{mu} atom in hydrogen mixtures, of importance for low-energy muon science, electroweak physics, and muon catalyzed fusion. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 288262
- Journal Information:
- Physical Review A, Journal Name: Physical Review A Journal Issue: 2 Vol. 54; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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