Zobrazeno 1 - 10
of 16
pro vyhledávání: '"G. P. Lafyatis"'
Autor:
Nathan G. Woodard, G. P. Lafyatis
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 14:332-335
We describe our work on gold surfaces that are made by peeling gold films off various smooth glass substrates. We find that we are able to routinely and reliably produce extremely smooth, large area gold surfaces: typically, for areas ≤40 μm squar
Publikováno v:
International Reviews in Physical Chemistry. 15:53-64
Charge transfer cross-sections in the collision of a doubly-charged nitrogen ion and a helium atom are evaluated with a close-coupling formalism. The charge transfer produces N+(3P), N+(1D) and He+ ions via the 2Σ+ and 2π molecular states of NHe2+.
Autor:
J. L. Kohl, A. R. Young, S. Bliman, Daniel Wolf Savin, A. Chutjian, G. P. Lafyatis, L. D. Gardner
Publikováno v:
Physical Review A. 49:357-362
An experiment to measure the dielectronic recombination of ${\mathrm{C}}^{3+}$ in a known external electric field is described. The measured value differs from results of calculations which do not include the effects of field enhancement, and is larg
Publikováno v:
Physical Review A. 48:321-325
The potential-energy curves of the low-lying 2 Σ + and 2 Π states of the cation NHe 2+ are calculated and it is shown that the lowest state of each symmetry has a potential well inside a repulsive Coulomb barrier that contains several long-lived vi
Publikováno v:
Physical review letters. 69(3)
Autor:
G. P. Lafyatis, Robert M. Weisskoff, K. R. Boyce, Robert W. Flanagan, Eric A. Cornell, David E. Pritchard
Publikováno v:
Physical review letters. 64(17)
Autor:
A. G. Martin, Vanderlei Salvador Bagnato, G. P. Lafyatis, Kristian Helmerson, David E. Pritchard
Publikováno v:
Physical Review Letters. 61:2431-2434
On rapporte la premiere observation des transitions induites par des radio frequences d'atomes neutres pieges. Une courbe de resonance radiofrequence d'un echantillon d'atomes Na pieges est obtenue en mesurant la population relative de deux sous-etat
Publikováno v:
Review of Scientific Instruments. 58:383-392
An ion beam apparatus for the absolute measurement of collision cross sections in singly and multiply charged ions is described. An inclined electron and ion beams arrangement is used. Emitted photons from the decay of collision produced excited stat
Publikováno v:
Review of Scientific Instruments. 57:2254-2265
An inclined beams apparatus for the measurement of absolute cross sections for dielectronic recombination between free electrons and singly or multiply charged ions is described. The collision products, a photon and a lower-charge-state ion, are dete
Autor:
Robert M. Weisskoff, Robert W. Flanagan, G. P. Lafyatis, Eric A. Cornell, David E. Pritchard, K. R. Boyce
Publikováno v:
Journal of Applied Physics. 63:4599-4604
We have designed and constructed a novel superconducting detector sensitive enough to detect the axial motion of a single, trapped ion. This detector employs a tuned, superconducting transformer matched to a rf SQUID (superconducting quantum interfer