Comment on “Positron and positronium chemistry by quantum Monte Carlo. IV. Can this method accurately compute observables beyond energy” [J. Chem. Phys. 111, 108 (1999)] | Zendy

J. Mitroy | Zendy; G Ryzhikh | Zendy

Open Access

Comment on “Positron and positronium chemistry by quantum Monte Carlo. IV. Can this method accurately compute observables beyond energy” [J. Chem. Phys. 111, 108 (1999)]

Author(s) -

J. Mitroy,

G Ryzhikh

Publication year - 2000

Publication title -

the journal of chemical physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.071

H-Index - 357

eISSN - 1089-7690

pISSN - 0021-9606

DOI - 10.1063/1.481040

Subject(s) - positronium , annihilation , monte carlo method , observable , quantum monte carlo , physics , positron , chemistry , electron , atomic physics , nuclear physics , quantum mechanics , statistics , mathematics

The 2γ annihilation rate for positronic lithium–hydride [LiH,e+] was computed with the quantum Monte Carlo method [Mella, Morosi, and Bressanini, J. Chem. Phys. 111, 108 (1999)]. A model in which the positron and residual ion compete to attract the most loosely bound valence electron provides an explanation of the small annihilation rate (1.2×109 s−1).

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