Effect of H-ion formation on positronium-hydrogen elastic scattering
نویسندگان
چکیده
منابع مشابه
Unusual nature of positronium-proton elastic scattering.
The Lippmann-Schwinger equation for positronium-proton elastic scattering lacks a first-order term because the center of mass and center of charge are coincident. A consequence of this is that the high-energy behavior of the phase shift is governed by the second-Born approximation. Asymptotic analysis indicates that the high-energy form of the phase shift is dL;O(1/k ), where k is the incident ...
متن کاملLow energy positron interactions with uracil--total scattering, positronium formation, and differential elastic scattering cross sections.
Measurements of the grand total and total positronium formation cross sections for positron scattering from uracil have been performed for energies between 1 and 180 eV, using a trap-based beam apparatus. Angular, quasi-elastic differential cross section measurements at 1, 3, 5, 10, and 20 eV are also presented and discussed. These measurements are compared to existing experimental results and ...
متن کاملDifferential cross sections for elastic and inelastic positronium-hydrogen-atom scattering
We report results of differential cross sections for elastic scattering, targetelastic Ps excitations and target-inelastic excitation of hydrogen in a five-state coupled-channel model allowing for Ps(1s)H(2s,2p) and Ps(2s,2p)H(1s) excitations using a recently proposed time-reversal-symmetric regularized electronexchange model potential. The present model yields a singlet Ps-H S-wave resonance a...
متن کاملElastic positronium-atom scattering using the stochastic variational method.
The stochastic variational method is used in conjunction with stabilization ideas to compute the low energy phase shifts and scattering lengths for positronium-atom scattering. Results are obtained for the Ps-H, Ps- Li+, Ps-He, and Ps-Ps systems. The Ps-H scattering lengths are probably accurate to better than 5% and are the most accurate so far computed. The results for Ps- Li+ and Ps-Ps scatt...
متن کاملروش جفتشدگی نزدیک دومرکزی در فرآیند انتقال بار
In the present work, the transition matrix elements as well as differential and total scattering cross-sections for positronium formation in Positron-Hydrogen atom collision and hydrogen formation in Positronium-Hydrogen ion collision, through the charge transfer channel by Two-Centre Close-Coupling method up to a first order approximation have been calculated. The charge transfer collision is ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Physics B: Atomic, Molecular and Optical Physics
سال: 2001
ISSN: 0953-4075,1361-6455
DOI: 10.1088/0953-4075/34/23/325