Zobrazeno 1 - 10
of 69
pro vyhledávání: '"C. D. Moak"'
Autor:
P. Hvelplund, Peter F. Dittner, P.D. Miller, Oakley H. Crawford, J. Gomez del Campo, Sheldon Datz, J. A. Biggerstaff, H. Knudsen, C. D. Moak, H.F. Krause
Publikováno v:
Physical Review Letters. 76:1856-1859
A first-principles calculation of the resonant-coherent excitation of planar-channeled hydrogenic ions is presented. The interplay between coherent interaction with the periodic crystal lattice potential and inelastic electron-electron collisions is
Autor:
J. S. Rosner, H. E. Wegner, Jene Andrew Golovchenko, A. N. Goland, C. D. Moak, C. E. Thorn, H. Knudsen
Publikováno v:
Physical Review B. 23:957-966
The charge state dependence of channeled ion energy loss has been determined for a series of ions ranging from fluorine to chlorine along the $〈110〉$ direction in a silicon crystal. Energy losses for both bare ions and ions partially clothed with
Autor:
Peter F. Dittner, J. Gomez del Campo, P.D. Miller, Oakley H. Crawford, H.F. Krause, C. D. Moak, J. A. Biggerstaff, P.L. Pepmiller, N. Nešković, Sheldon Datz, M.D. Brown
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 13:56-60
Previous studies have shown that when an ion moves in an axial channel with a velocity, v , such that hKv/ d = ΔE ij , transitions are coherently induced. K is an integer, d is the longitudinal atomic spacing in the channel, and ΔE ij , is an ionic
Autor:
P.H. Stelson, P.D. Miller, Fou Cm, W. B. Dress, Sheldon Datz, Peter F. Dittner, G.D. Alton, C. D. Moak, C. Bottcher, N. Nešković
Publikováno v:
Physical Review Letters. 51:31-34
Dielectronic recombination cross sections for the Li-like ions B/sup 2 +/ and C/sup 3 +/ via 1s /sup 2/2s..-->..1s /sup 2/2p excitation are reported. The amount of electron capture attending the passage of megaelectronvolt (atomic mass unit) ion beam
Autor:
J. Gomez del Campo, C. D. Moak, P.D. Miller, H. Knudsen, Sheldon Datz, H.F. Krause, P. Hvelplund, O.H. Crawford, Peter F. Dittner, J. A. Biggerstaff, Steven H. Overbury
Publikováno v:
Nuclear Instruments and Methods in Physics Research. 194:327-336
Hydrogen-like ions of B, C, N, O and F and helium-like ions of N, O and F have been shown to exhibit resonant coherent excitation from their n =1 to their n =2 states, caused by periodic electric potential oscillations which occur as the ion moves th
Autor:
J. M. Hall, G.D. Alton, C. D. Moak, C. J. Sofield, P.D. Miller, C.M. Jones, D. C. Gregory, P.L. Pepmiller, L.B. Bridwell
Publikováno v:
Physical Review A. 40:59-68
Nonequilibrium charge-state fractions of $^{35}\mathrm{Cl}$ ions traversing solid C targets have been measured. Absolute intensities of x rays were measured for transitions between various states of the nearly fully stripped $^{35}\mathrm{Cl}$ ions t
Autor:
P.D. Miller, C.M. Jones, and G. D. Alton, Patrick Richard, C.J. Sofield, D. C. Gregory, Philip L. Pepmiller, C. D. Moak, J. M. Hall, L. B. Bridwell
Publikováno v:
Physical Review A. 33:914-920
The energy systematics of single and double K-shell-vacancy production in titanium have been investigated near the limit of zero target thickness for incident chlorine ions over an energy range of 7\char21{}15 MeV/amu. Single and double K-shell-vacan
Autor:
Q.C. Kessel, C. D. Moak, P.D. Miller, H.A. Scott, L.B. Bridwell, G.D. Alton, A. Antar, C.M. Jones, R.O. Sayer
Publikováno v:
Nuclear Instruments and Methods. 150:529-535
Absolute charge state yields of 20 MeV 127 I ions emerging within cone half angles of 4, 6, and 8 mrad from a differentially pumped gas cell of length 9.4 cm have been measured using N 2 , Ar, Kr, and Xe stripper gases. Measurements were made over a