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Encyclopedia > Hartree

The Hartree energy (symbol Eh) is a physical constant used as atomic unit of energy, named after physicist Douglas Hartree.


It has a value of twice the absolute value of binding energy of the electron in the ground state of the hydrogen atom |W1| or the ionization energy.

= 4.359 743 81(34) × 10-18 J = 27.214 4 eV = 2 Ry

where:

is the Dirac's constant,
me is the electron rest mass
a0 is the Bohr radius

  Results from FactBites:
 
Hartree-Fock - Wikipedia, the free encyclopedia (1242 words)
The procedure is named after Douglas Hartree, who devised the self-consistent field method, and V.
Fock, who demonstrated the rigour of Hartree's method and reformulated it into the matrix form used today.
A clever dodge, employed by Hartree, for atomic calculations was to increase the nuclear charge, thus pulling all the electrons closer together.
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