# Publications

**Recent journal publications**

180. L.M. Wang, Z.-C. Yan, H.X. Qiao et al.,
"Variational energies and the Fermi contact term for the low-lying states of lithium: Basis-set completeness," Phys. Rev. A **85**, 052513 (2012).

179. A.S. Titi, and G.W.F. Drake, "Quantum theory of longitudinal momentum transfer in above-threshold ionization," Phys. Rev. A 85, 041404 (2012).

178.
M. Brodeur, T. Brunner, C. Champagne, et al.,
"First Direct Mass Measurement of the Two-Neutron Halo Nucleus He-6 and Improved Mass for the Four-Neutron Halo He-8," Phys. Rev. Lett. **108**, 052504 (2012).

177.
D. Morton and G.W.F. Drake, 2011. "Spin-forbidden radiative decay rates from the
3 (3)P(1,2) and 3 (1)P(1) states of helium," Phys. Rev. A **83**, 042503 (2011)

\item[176.]
M. Zakova, Z. Andjelkovic, M.L. Bissell, K. Blaum, G.W.F. Drake, C Geppert, M. Kowalska,
J. Kramer, A. Krieger, M. Lochmann, T. Neff, R. Neugart, W. N\"ortersh\"auser, R. Sanchez,
F. Schmidt-Kaler, D. Tiedemann, Z.-C. Yan, D.T. Yordanov, And C. Zimmermann,
"Isotope shift measurements in the 2s(1/2) --> 2p(3/2) transition of Be+ and extraction
of the nuclear charge radii for Be-7, Be-10, Be-11," J. Phys. G--Nucl. and Particle Phys.,
**37**, 055107 (2010) (14 pages).

175.
R. El-Wazni and G.W.F. Drake, "Energies for the high-L Rydberg states of helium:
Asymptotic analysis," Phys. Rev. A **80<\strong>, 064501 (2009) (4 pages).
**

**174.
R. Ringle, M. Brodeur, T. Brunner, S. Ettenauer, M. Smith,
A. Lapierre, V.L. Ryjkov, P. Delheij, G.W.F. Drake, J. Lassen,
D. Lunney, and J. Dilling, "High-Precision Penning-Trap Mass Measurements of
9,10Be and the One-Neutron Halo Nuclide 11Be," Phys. Lett.\ B <strong>695**, 170-174 (2009).