Improved result for helium 2(3)S(1) ionization energy

Authors
Pachucki, K
Citation
K. Pachucki, Improved result for helium 2(3)S(1) ionization energy, PHYS REV L, 84(20), 2000, pp. 4561-4564
Citations number
14
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
84
Issue
20
Year of publication
2000
Pages
4561 - 4564
Database
ISI
SICI code
0031-9007(20000515)84:20<4561:IRFH2I>2.0.ZU;2-#
Abstract
A complete calculation of relativistic and quantum electrodynamic effects t o order m alpha(6) on the energy of the 2(3)S(1) state in helium is present ed. The result, beyond the previously known radiative corrections, amounts to -3.00(1) MHz, and significantly reduces the theoretical uncertainty. The improved theoretical predictions are compared to the best available experi mental result for the 2(3)S(1) state.