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

Zhang, R. T.; Wulf, Dallas; McCammon, D.; Seely, D. G.; Andrianarijaona, V. M.; Havener, C. C.

doi:10.1063/1.5127727

Cited by 7 publications

(6 citation statements)

References 44 publications

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“…Overall, the line-emission profiles from the present calculations are qualitatively similar to the experimental counts. Quantitatively, the present results appear to be closer to the results of Fleury et al [16] than to those of Zhang et al [20,21]. Moreover, specific transition counts, such as 3d → 2p, appear slightly overestimated compared with both experiments, which suggests a large σ 4 f in the present calculation (cf.…”

Section: Line-emission Resultssupporting

confidence: 84%

“…Also recall from the above discussion that such cascades are the result of pure SEC only. The present calculations are compared with spectroscopic measurements by Fleury et al [16] and measurements using a high-resolution X-ray quantum microcalorimeter [20,21].…”

Section: Line-emission Resultsmentioning

confidence: 90%

“…Fractions of line emissions with respect to impact speed from charge-exchange Ne 8+ -He collisions. Experiments: Zhang et al [20,21]; Fleury et al [16]. Theory: present work.…”

Section: Line-emission Resultsmentioning

confidence: 91%

“…Such a detector is capable of resolving X-ray signals of no more than 10 eV full-width at half-maximum [19]. Recent reports on measurements of radiative emissions from Ne 8+ -He collisions using the X-ray microcalorimeter detector [20,21], motivate the further theoretical examination of these systems.…”

Section: Introductionmentioning

confidence: 99%

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Capture Cross Sections and Radiative Emission-Line Strengths for Slow Ne8+ Collisions with He and H2

Leung¹,

Kirchner²

2019

Atoms

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The Ne8+–He and –H2 collision systems are examined at impact speeds ranging between 0.17 and 0.4 a.u. Transition probabilities for electron capture are obtained using the two-center basis generator method performed within the independent-electron model. The aim of calculating capture cross sections for these collision systems is to provide new theoretical verification of previously reported experimental data and to provide aid for astrophysical X-ray studies. This study also examines the applicability of the independent-electron model with effective potentials to describe two-electron capture for these two systems. Comparisons of capture cross sections and radiative-emission counts with the available experimental and theoretical data show an overall good agreement.

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Section: Line-emission Resultssupporting

confidence: 84%

Section: Line-emission Resultsmentioning

confidence: 90%

“…Fractions of line emissions with respect to impact speed from charge-exchange Ne 8+ -He collisions. Experiments: Zhang et al [20,21]; Fleury et al [16]. Theory: present work.…”

Section: Line-emission Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

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Capture Cross Sections and Radiative Emission-Line Strengths for Slow Ne8+ Collisions with He and H2

Leung¹,

Kirchner²

2019

Atoms

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“…Xu et al [143] reported the n-resolved state selective capture cross sections in a series of new measurements on the charge exchange of Ne (8,9)+ ions with He and H 2 for collision energy ranging from 1 keV/u to 24.75 keV/u using COLTRIMS. By applying l distributions commonly used in the astrophysical literature to the measured n-resolved cross sections and considering the radiative cascades from the excited states of Ne 7+ ions, the soft x-ray emissions in the charge exchange between 4 keV/u Ne 8+ and He were deduced and compared to the recent x-ray emissions measurement reported by Zhang et al, [144] which provide the first and direct test of the validity of different l distribution models, as shown in Fig. 14.…”

Section: -11mentioning

confidence: 99%

Atomic structure and collision dynamics with highly charged ions

Ma¹,

Zhang²,

Wen³

et al. 2022

Chinese Phys. B

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The research progresses on the investigations of atomic structure and collision dynamics with highly charged ions based on the heavy ion storage rings and electron ion beam traps in recent 20 years are reviewed. The structure part covers test of quantum electrodynamics and electron correlation in strong Coulomb field studied through dielectronic recombination spectroscopy and VUV/x-ray spectroscopy. The collision dynamics part includes charge exchange dynamics in ion-atom collisions mainly in Bohr velocity region, ion induced fragmentation mechanisms of molecules, hydrogen-bound and van de Waals bound clusters, interference and phase information observed in ion-atom/molecule collisions. With this achievements, two aspects of theoretical studies related to low energy and relativistic energy collisions are presented. The applications of data relevant to key atomic processes like dielectronic recombination and charge exchanges involving highly charged ions are discussed. At end of this review, some future prospects of research related to highly charged ions are proposed.

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Comets, Mars and Venus

Dennerl

2022

Handbook of X-Ray and Gamma-Ray Astrophysics

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

Cited by 7 publications

References 44 publications

Capture Cross Sections and Radiative Emission-Line Strengths for Slow Ne8+ Collisions with He and H2

Capture Cross Sections and Radiative Emission-Line Strengths for Slow Ne8+ Collisions with He and H2

Atomic structure and collision dynamics with highly charged ions

Comets, Mars and Venus

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