Zobrazeno 1 - 10
of 11
pro vyhledávání: '"C I Pincus"'
Autor:
J. L. Harris, C. I. Pincus, Qiang Li, X. K. Maruyama, H. S. Caplan, G. B. Rothbart, R. M. Silzer, D. G. Boyers, Melvin A. Piestrup, D. M. Skopik
Publikováno v:
Journal of Applied Physics. 72:4300-4307
This article describes the measurements of x‐ray power, spatial, and spectral distributions from transition radiators whose spectra are narrowed by the foil material’s K‐shell photoabsorption edge. We used two foil stacks, one composed of 10 fo
Autor:
J.C. Bergstrom, D. M. Skopik, D. G. Boyers, R. M. Silzer, J. L. Harris, X.K. Maruyama, Melvin A. Piestrup, C. I. Pincus, H.S. Caplan
Publikováno v:
Physical Review A. 43:3653-3661
By designing transition radiators to emit x-rays at the foil material's K-, L-, or M-shell photoabsorption edge, the x-ray spectrum is narrowed. The source is quasimonochromatic, directional, and intense and uses an electron beam whose energy is cons
Autor:
D. G. Boyers, Michael J. Moran, X.K. Maruyama, Melvin A. Piestrup, C. I. Pincus, J. O. Kephart, RA Gearhart
Publikováno v:
Physical Review A. 43:2387-2396
In experiments using targets consisting of many thin metal foils, we have demonstrated that a narrow, forward-directed cone of transition radiation in the 8- to 60-keV spectral range can be generated by electron beams with moderate energies (between
Autor:
D. D. Snyder, C. I. Pincus, D. G. Boyers, X. K. Maruyama, A. H. Ho, D. M. Skopik, Qiang Li, M. J. Moran, R. M. Silzer, Melvin A. Piestrup, G. B. Rothbart
Publikováno v:
Applied Physics Letters. 61:1019-1021
We have measured the profile of x rays generated by a transition radiator and focused by simple cylindrical optics. Soft x rays with photon energies between 1 and 4 keV were generated by a 93‐MeV electron beam striking a stack of eight foils of 3.5
Autor:
R. M. Silzer, D. M. Skopik, H. S. Caplan, D. G. Boyers, C. I. Pincus, Melvin A. Piestrup, J. L. Harris
Publikováno v:
Applied Physics Letters. 59:189-191
We have measured the total soft‐x‐ray power from a transition radiator composed of a stack of 25 beryllium foils each 1.0 μm thick which were penetrated by a relativistic electron beam whose maximum power was approximately 7 kW. The maximum tota
Autor:
R. M. Silzer, J.C. Bergstrom, D. M. Skopik, J. L. Harris, H. S. Caplan, D. G. Boyers, Melvin A. Piestrup, C. I. Pincus
Publikováno v:
Applied Physics Letters. 58:2692-2694
Soft x rays were produced by a stack of 12 aluminum foils, each 1.0 μm thick, which were bombarded by a relativistic electron beam whose maximum power was ∼10 kW. The maximum total soft x‐ray flux was measured to be 8 mW, a factor of 10 over the
Autor:
G. B. Rothbart, D. G. Boyers, C. I. Pincus, Melvin A. Piestrup, Richard H. Pantell, C. K. Gary
Publikováno v:
Medical physics. 20(5)
Channeling radiation could provide a viable source for digital energy subtraction angiography (DESA). A signal to noise ratio (SNR) of 6.2 for a resolution of 0.5 mm x 0.5 mm could be achieved using a 6-mA 100-ms 20-MeV electron-beam pulse and a diam
Autor:
G. D. Hallewell, D. M. Skopik, R. M. Silzer, G.B. Rothbart, Michael J. Moran, Qiang Li, X.K. Maruyama, D. D. Snyder, D. G. Boyers, Melvin A. Piestrup, C. I. Pincus
Publikováno v:
Physical review. A, Atomic, molecular, and optical physics. 45(2)
We have observed the spatial distribution of coherent or resonant transition radiation (RTR) in the soft-x-ray region of the spectrum (1-2 keV). Resonance transition radiators were constructed and tested at two accelerators using electron-beam energi
Autor:
D. M. Skopik, Qiang Li, D. G. Boyers, R. M. Silzer, H.S. Caplan, C. I. Pincus, J.C. Bergstrom, X.K. Maruyama, Melvin A. Piestrup, J. L. Harris, Michael J. Moran
Publikováno v:
Short-Wavelength Radiation Sources.
In experiments using targets consisting of many thin metal foils, we have demonstrated that a narrow, forward-directed cone of transition radiation in the 0.8 to 60 keV spectral range can be generated by electron beams with moderate energies (between