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On electron screening effects in the low‐energy 3 He(d, p) 4 He data
Author(s) -
Langanke Karlheinz,
Lukas Dirk
Publication year - 1992
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19925040504
Subject(s) - physics , electron , degrees of freedom (physics and chemistry) , atomic physics , born approximation , monte carlo method , coupling (piping) , energy (signal processing) , nuclear physics , quantum mechanics , materials science , statistics , mathematics , metallurgy
We have calculated the screening effects of the two electrons in the atomic 3 He gas target on the low‐energy 3 He(d, p) 4 He data. The nuclear degrees of freedom have been described within the microscopic multi‐channel Resonating Group Method, while the two electrons have been treated in Born‐Oppenheimer approximation deriving the exact screening potential within the Path Integral Monte Carlo method. Our model underestimates the observed screening effects implying the need to consider the coupling of nuclear and electronic degrees of freedom.