Zobrazeno 1 - 10
of 15
pro vyhledávání: '"J. E. Bayfield"'
Publikováno v:
Physical Review A. 53:R12-R15
As the peak electric field of the microwave pulse is increased, steps in the classical microwave ionization probability of the highly excited hydrogen atom are produced by phase-space metamorphosis. They arise from new layers of Kolmogorov-Arnold-Mos
Publikováno v:
Physica D: Nonlinear Phenomena. 83:46-54
Recent “one-dimensional” experiments on hydrogen in microwaves have provided evidence for nonadiabatic transition processes occurring during the rise and fall of a short pulse of strong microwave electric field. Quantum coupling near a level cros
Publikováno v:
Review of Scientific Instruments. 51:651-654
Cross sections for Oq+‐He single electron capture have been measured for 5⩽q⩽8 within the energy range 15 to 100 keV per amu. High energy positive ions were injected into an EN tandem Van de Graaff operated at a negative voltage, producing even
Autor:
D. H. Crandall, P. M. Koch, R. S. Peterson, M. L. Mallory, J. E. Bayfield, D. J. Pegg, L. D. Gardner, Ivan A. Sellin
Publikováno v:
Physical Review A. 21:1397-1402
Single electron-capture cross sections have been measured for boron ions ${\mathrm{B}}^{q+}$ with initial charges $q=2, 3, \mathrm{and} 4$ incident on an atomic hydrogen target. The cross sections ${\ensuremath{\sigma}}_{21}$ and ${\ensuremath{\sigma
Autor:
L. D. Gardner, J. E. Bayfield, P. M. Koch, I. A. Sellin, D. J. Pegg, R. S. Peterson, M. L. Mallory, D. H. Crandall
Publikováno v:
Physical Review A. 20:766-778
Experimental study of electron transfer in multiply charged iron-ion collisions with atomic hydrogen
Publikováno v:
Physical Review A. 16:1415-1418
The measurement of electron-transfer cross sections sigma in ion collisions with atomic hydrogen has been extended to iron ions with mass number A = 56, charges q between +4 and +13, and specific energies E/A between 27 and 290 keV/amu. The charge-st
Autor:
P. M. Koch, J. E. Bayfield
Publikováno v:
Physical Review Letters. 33:258-261
Autor:
L A Pinnaduwage, J E Bayfield
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 18:L49-L53
Microwave n-decreasing multiphoton transitions have been observed, for the first time, in n=60 and n=63 hydrogen atoms initially formed static-field polarised in their lowest energy Stark states with electric quantum number ne=1-n. Resonant n changin
Autor:
G. A. Khayrallah, J. E. Bayfield
Publikováno v:
Physical Review A. 12:869-875
Two experimental tests of the $^{4}\mathrm{He}^{++}$-$\mathrm{H}(1s)$ close-coupling collision calculations were performed with a highly mass-resolved $^{4}\mathrm{He}^{++}$ incident ion beam and an atomic hydrogen scattering target. The total single
Publikováno v:
Physical Review A. 24:138-143
Hydrogen atoms with principal quantum number $n=10$ have been laser excited to states between $n=44 \mathrm{and} 67$ in the presence of a strong microwave field whose frequency $\ensuremath{\omega}$ was adjustable between 5.9 and 8.0 GHz. The excitat