D. G. Seely

Target and Velocity Dependence of Charge Exchange X-Ray Emission at Solar Wind Velocities

R. T. Zhang, D. G. Seely, V. M. Andrianarijaona, Felix T. Jaeckel et autres

Abstract Laboratory measurements of X-ray emissions following charge exchange (CX) between highly charged ions and neutrals are important to assess their diagnostic utility for the nonequilibrium astrophysical plasma environments, where hot flows meet cold gases. With a high-resolution X-ray quantum microcalorimeter detector, …

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Measurement of the Charge Exchange Cross Section for N7+, O7+ Ions in Collision with Atomic H

R. T. Zhang, D. G. Seely, V. M. Andrianarijaona, Ilija N. Draganic et autres

Abstract The absolute total cross sections for the charge exchange between highly charged ions 15N7+, O7+, and atomic H have been measured with the ion-atom merged-beams apparatus at Oak Ridge National Laboratory. The collision energy range is from 1224 down to 2 …

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Absolute measurement of the total cross section in 2 keV/u - 10 keV/u D2+ + H charge transfer collisions

V. M. Andrianarijaona, L. M. Wegley, Aaron Z. Watson, M. Andrianarijaona et autres

The ion-atom merged-beam apparatus at Oak Ridge National Laboratory in Oak Ridge, Tennessee has been successful in measuring absolute cross sections of charge transfer between atomic ions and hydrogen atoms for many years. Moreover, the first molecular ion measurements with the current …

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High-resolution charge exchange x-ray emission at solar wind velocities

R. T. Zhang, Dallas Wulf, Dan McCammon, D. G. Seely et autres

With a high-resolution x-ray quantum microcalorimeter detector, x-ray emissions following single charge exchange are measured for 392 km/s, 554 km/s, 678 km/s, and 876 km/s Ne8+ on He collisions. Line ratios are reported for 3p → 2s, 4s → 2p, 3d → …

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X-ray emission measurements following charge exchange between O$^{8+}$ and Kr

R. T. Zhang, C. C. Havener, D. G. Seely, V. M. Andrianarijaona et autres

Lyman x-ray spectra following charge exchange between C6+ and H2 are presented for collision velocities between 400 and 2300 km/s (1–30 keV/amu). Spectra were measured by a microcalorimeter x-ray detector capable of fully resolving the C VI Lyman series emission lines though …

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Line ratios for soft-x-ray emission following charge exchange between O8+ and Kr

D. G. Seely, V. M. Andrianarijaona, Dallas Wulf, Kelsey M. Morgan et autres

Lyman spectra and line ratios are reported for soft-x-ray emissions following the charge exchange process in 293, 414, 586, and 1256 km/s ${\mathrm{O}}^{8+}$ and Kr collisions. Lyman series from Ly-$\ensuremath{\alpha}$ to Ly-$\ensuremath{\varepsilon}$ were resolved for the ${\mathrm{O}}^{7+}$ ion using a high-resolution x-ray …

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Measured Absolute Cross Section of Charge Transfer in H$+$H$_{2}^{+}$ at Low Energy: Signature of v$_{i} \quad =$ 2 and Trajectory Effects$^{1}$

Richard Strom, K.G. Bacani, R.M. Chi, S.L. Heczko et autres

Radiance line ratios Ly-β/Ly-α, Ly-γ/Ly-α, Ly-δ/Ly-α, and Ly-ε/Ly-α for soft X-ray emissions following charge exchange between C6+ and Kr

V. M. Andrianarijaona, Dallas Wulf, Dan McCammon, D. G. Seely et autres

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Line ratios of soft x-ray emissions following charge exchange between C$^{6+}$ and Kr

Carla Guillén, Stefano Romano, V. M. Andrianarijaona, Dan McCammon et autres

Analysis of the Absolute Cross Section of Charge Transfer Collisions in H$+$H$_{2}^{+}$ and Isotopic Systems using Merged-Beams Technique

V. M. Andrianarijaona, K.G. Bacani, S.L. Heczko, Richard Strom et autres

X-ray-emission measurements following charge exchange between C 6+ and H 2

M. Fogle, Dallas Wulf, Kelsey M. Morgan, Dan McCammon et autres

Lyman x-ray spectra following charge exchange between C${}^{6+}$ and H${}_{2}$ are presented for collision velocities between 400 and 2300 km/s (1--30 keV/amu). Spectra were measured by a microcalorimeter x-ray detector capable of fully resolving the C vi Lyman series emission lines though …

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X-ray emission measurements following charge exchange between C 6+ and He

X. Defaÿ, Kelsey M. Morgan, Dan McCammon, Dallas Wulf et autres

X-ray spectra following charge-exchange collisions between C${}^{6+}$ and He are presented for collision energies between 460 and 32 000 eV/u. Spectra were obtained at the Oak Ridge National Laboratory Multicharged Ion Research Facility using a microcalorimeter x-ray detector capable of fully resolving …

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