Positron annihilation in molecules by capture into vibrational Feshbach resonances of infrared-active modes.
نویسندگان
چکیده
Enhanced positron annihilation on polyatomic molecules is a long-standing and complex problem. We report the results of calculations of resonant positron annihilation on methyl halides. A free parameter of our theory is the positron binding energy. A comparison with energy-resolved annihilation rates measured for CH3F, CH3Cl, and CH3Br [L. D. Barnes, Phys. Rev. A 74, 012706 (2006)10.1103/PhysRevA.74.012706] shows good agreement and yields estimates of the binding energies.
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ورودعنوان ژورنال:
- Physical review letters
دوره 97 19 شماره
صفحات -
تاریخ انتشار 2006