Search Results - "Scheer, J.A"

High negative ion yield from light molecule scattering by Scheer, J.A., Wieser, M., Wurz, P., Bochsler, P., Hertzberg, E., Fuselier, S.A., Koeck, F.A., Nemanich, R.J., Schleberger, M.

“…Molecular oxygen and hydrogen ions were scattered at grazing incidence from several diamond-like carbon (DLC) surfaces in the energy range from 190eV to…”
Get full text

Scattering of slow ions from insulator surfaces at the example of molecular oxygen from LiF(1 0 0) by Scheer, J.A., Wurz, P., Heiland, W.

“…We scattered molecular oxygen ions at grazing incidence from a LiF(1 0 0) surface in the energy range from 880 to 3040 eV. About 50% molecular survival was…”
Get full text

Width and Variation of the ENA Flux Ribbon Observed by the Interstellar Boundary Explorer by Fuselier, S.A, Allegrini, F, Funsten, H.O, Ghielmetti, A.G, Heirtzler, D, Kucharek, H, Lennartsson, O.W, McComas, D.J, Möbius, E, Moore, T.E, Petrinec, S.M, Saul, L.A, Scheer, J.A, Schwadron, N, Wurz, P

“…The dominant feature in Interstellar Boundary Explorer (IBEX) sky maps of heliospheric energetic neutral atom (ENA) flux is a ribbon of enhanced flux that…”
Get full text

Direct Observations of Interstellar H, He, and O by the Interstellar Boundary Explorer by Möbius, E, Bochsler, P, Bzowski, M, Crew, G.B, Funsten, H.O, Fuselier, S.A, Ghielmetti, A, Heirtzler, D, Izmodenov, V.V, Kubiak, M, Kucharek, H, Lee, M.A, Leonard, T, McComas, D.J, Petersen, L, Saul, L, Scheer, J.A, Schwadron, N, Witte, M, Wurz, P

“…Neutral gas of the local interstellar medium flows through the inner solar system while being deflected by solar gravity and depleted by ionization. The…”
Get full text

Self-supporting CVD diamond charge state conversion surfaces for high resolution imaging of low-energy neutral atoms in space plasmas by Neuland, M.B., Riedo, A., Scheer, J.A., Wurz, P.

“…•We investigate two CVD diamond surfaces for their applicability as charge state conversion surfaces.•We measure angular scattering and ionisation efficiency…”
Get full text

Scattering of light molecules from thin Al 2O 3 films by Scheer, J.A., Wahlström, P., Wurz, P.

“…Molecular oxygen and hydrogen ions were scattered at grazing incidence from various thin Al 2O 3 films. The energy of incident particles was varied from 390 to…”
Get full text

On the surface characterization of an Al2O3 charge state conversion surface using ion scattering and atomic force microscope measurements by Riedo, A., Ruosch, M., Frenz, M., Scheer, J.A., Wurz, P.

“…► Thermal certification campaigns on charge state conversion surfaces were performed. ► Ion scattering and AFM instruments were used to characterize surface…”
Get full text

Scattering of light molecules from thin Al2O3 films by Scheer, J.A., Wahlström, P., Wurz, P.

Get full text

Scattering of light molecules from Al2O3 surfaces by Scheer, J.A., Wahlström, P., Wurz, P.

“…Various light ions were scattered at grazing incidence from a highly polished Al2O3 single crystal and from a thin film of Al2O3 on graphite. The energy of…”
Get full text

Conversion surfaces for neutral particle imaging detectors by Scheer, J.A., Wieser, M., Wurz, P., Bochsler, P., Hertzberg, E., Fuselier, S.A., Koeck, F.A., Nemanich, R.J., Schleberger, M.

“…Low-energy neutral particles must be ionized before they are analyzed by mass spectrometric means. Within the limitations regarding space, weight and power…”
Get full text

Coherent radar system performance estimation by Scheer, J.A.

“…The performance of coherent radar systems is not limited by thermal amplitude noise, but rather by the phase and amplitude effects of errors in the vector…”
Get full text

Fiber optic line phase noise and drift effects on bistatic imaging radar performance by Lane, T.L., Scheer, J.A.

“…Instrumentation grade, coherent, bistatic radar cross section (RCS) measurement systems require a reliable low-noise method to link the reference, local…”
Get full text

MMW radar cross section range characterizes targets by Scheer, J.A., Chastain, W.E., Alexander, N.T., Bruder, J.A., Scheer, C.R., Horst, M.M., Trostel, J.M.

“…Examples of high-resolution millimeter-wave radar images of radar targets and the facilities, equipment, and techniques required to obtain these images are…”
Get full text