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Improved binding energies for LiPs, e(+)Be, NaPs and e(+)Mg

Mitroy, J and Ryzhikh, GG (2001). Improved binding energies for LiPs, e(+)Be, NaPs and e(+)Mg. Journal of Physics B: Atomic, Molecular and Optical Physics,34(10):2001-2007.

Document type: Journal Article
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Title Improved binding energies for LiPs, e(+)Be, NaPs and e(+)Mg
Author Mitroy, J
Ryzhikh, GG
Journal Name Journal of Physics B: Atomic, Molecular and Optical Physics
Publication Date 2001
Volume Number 34
Issue Number 10
Start Page 2001
End Page 2007
Publisher Institute of Physics Publishing
HERDC Category C1 - Journal Article (DEST)
Abstract The stochastic variational method and its fixed core variant are applied to the calculation of lithium positride (LiPs), positronic beryllium (e(+)Be), sodium positride (NaPs) and positronic magnesium (e(+)Mg). The revised binding energy of Lips was 0.012 341 Hartree, that for e(+)Be was 0.031 47 Hartree, that for NaPs was 0.008 419 Hartree and the binding energy for e(+)Mg was 0.015 612 Hartree. The binding energies for LiPs and e(+)Be are expected to be within 2% of the variational limit. The uncertainties in the NaPs and e(+)Mg binding energies are larger and these are expected to be within 10-15% of the variational limit.
Keywords quantum monte-carlo
correlated gaussian functions
stochastic variational method
few-body problems
ground-state
configuration-interaction
positron binding
bound-states
atoms
chemistry
DOI http://dx.doi.org/10.1088/0953-4075/34/10/313   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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Created: Wed, 28 Nov 2007, 14:16:08 CST