Interaction of Fully Stripped, Hydrogenlike and Heliumlike C, N, O, Ne and Ar Ions with H and He Atoms and H<sub>2</sub>Molecules

Panov, M. N.; Basalaev, A. A.; Lozhkin, K. O.

doi:10.1088/0031-8949/1983/t3/025

Cited by 66 publications

(34 citation statements)

References 22 publications

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“…The total charge exchange cross section measurements of hydrogen-like oxygen on atomic hydrogen are presented in Fig 4. Our new measurements are lower than the obtained results of Meyer [30] and generally above the measurements of Panov [31] which again show scatter. The discrepancy with the previous measurements of Meyer et al is outside of our estimated total systematic error of 15%.…”

Section: Total Charge Exchange Cross Section Measurementscontrasting

confidence: 86%

Solar Wind Charge Exchange Studies Of Highly Charged Ions On Atomic Hydrogen

Draganić¹,

Seely²,

McCammon³

et al. 2011

AIP Conference Proceedings

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A setup for probing collisions of highly charged ions with liquid droplets Rev. Sci. Instrum. 75, 5094 (2004); 10.1063/1.1813971 First studies of state selective electron capture from atomic hydrogen by state prepared doubly charged ions AIP Conf.Abstract. Accurate studies of low-energy charge exchange (CX) are critical to understanding underlying soft X-ray radiation processes in the interaction of highly charged ions from the solar wind with the neutral atoms and molecules in the heliosphere, cometary comas, planetary atmospheres, interstellar winds, etc.. Particularly important are the CX cross sections for bare, H-like, and He-like ions of C, N, O and Ne, which are the dominant charge states for these heavier elements in the solar wind. Absolute total cross sections for single electron capture by H-like ions of C, N, O and fullystripped O ions from atomic hydrogen have been measured in an expanded range of relative collision energies (5 eV/u -20 keV/u) and compared to previous H-oven measurements. The present measurements are performed using a mergedbeams technique with intense highly charged ion beams extracted from a 14.5 GHz ECR ion source installed on a high voltage platform at the Oak Ridge National Laboratory. For the collision energy range of 0.3 keV/u -3.3 keV/u, which corresponds to typical ion velocities in the solar wind, the new measurements are in good agreement with previous Hoven measurements. The experimental results are discussed in detail and compared with theoretical calculations where available.

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Section: Total Charge Exchange Cross Section Measurementscontrasting

confidence: 86%

Solar Wind Charge Exchange Studies Of Highly Charged Ions On Atomic Hydrogen

Draganić¹,

Seely²,

McCammon³

et al. 2011

AIP Conference Proceedings

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“…For the lower energy points of Phaneuf et al [21], the C 5+ ions were produced in a laser ion source, and the resulting C 4+ ions were confined after the charge transfer in an atomic hydrogen oven by an axial magnetic field and detected by time-of-flight techniques. The measurements of Panov et al [23], who also used a hydrogen-oven target, show scatter possibly due to the fact that the C 4+ product was detected with a Faraday cup in combination with a charge- Crandall et al [22] Panov et al [23] Goffe et al [ 2. (Color online) Present merged-beams measurements compared to other measurements and theories. Error bars correspond to relative (statistical) error bars at 90% confidence.…”

Section: Resultsmentioning

confidence: 99%

Low-energy charge transfer betweenC5+and atomic hydrogen

2011

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Charge transfer with carbon ions has been identified as important in both magnetic fusion plasma devices and, more recently, in solar wind interactions with comets, planets, or neutrals in the heliosphere. A merged-beams technique is used to measure the absolute total charge-transfer cross section for C 5+ and atomic H over four orders of magnitude in collision energy, from 12 000 to 0.64 eV/u. The present measurements are compared with previous measurements using an atomic hydrogen target and benchmark available classical trajectory Monte Carlo and molecular-orbital close-coupling calculations. An observed increasing cross section below 10 eV/u is attributed to trajectory effects due to the ion-induced dipole attraction between reactants.

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“…The experimental situation, on the other hand, is favorable. In addition to some earlier high‐energy measurements 13–17, Hoekstra et al 18 measured a number of absolute line emission cross‐sections for this system. Their results show good agreement with the theory regarding the dominant capture channel ( n = 4 levels of C 5+ ).…”

Section: Introductionmentioning

confidence: 95%

“…In the structure calculations all states including n = 1 up to n = 7 manifold of the C 5+ ion have been retained to obtain all possible eigenstates and eigenfunctions of the quasimolecule [CH 6+ ]. It is well established now that the most populated capture channel for this process is the n = 4 manifold of C 5+ 6–10, 13–18 ion. As the dominant formation channel is n = 4 manifold, including the entrance channel (see also Fig.…”

Section: Introductionmentioning

confidence: 99%

Charge exchange in C⁶⁺+ H (1s) collisions at low energies

Saha

2003

Int J of Quantum Chemistry

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ABSTRACT:The low-energy single electron capture cross-sections by C 6ϩ from H atoms have been evaluated employing the semiclassical, impact parameter, closecoupling method based on a molecular expansion augmented with the plane-wave translation factor. Using the method of Bates and Carson, the exact Born-Oppenheimer eigenfunctions and eigenvalues are calculated. Eight-state coupled equations are solved to obtain transition probabilities and thereby evaluate capture cross-sections. Our calculated capture cross-sections agree well with other theoretical and experimental results. At these energies it is found that the capture into the n ϭ 4 manifold of the C 5ϩ remains the main contributor to the charge exchange process.

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Interaction of Fully Stripped, Hydrogenlike and Heliumlike C, N, O, Ne and Ar Ions with H and He Atoms and H₂Molecules

Cited by 66 publications

References 22 publications

Solar Wind Charge Exchange Studies Of Highly Charged Ions On Atomic Hydrogen

Solar Wind Charge Exchange Studies Of Highly Charged Ions On Atomic Hydrogen

Low-energy charge transfer betweenC5+and atomic hydrogen

Charge exchange in C⁶⁺+ H (1s) collisions at low energies

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Interaction of Fully Stripped, Hydrogenlike and Heliumlike C, N, O, Ne and Ar Ions with H and He Atoms and H2Molecules

Cited by 66 publications

References 22 publications

Solar Wind Charge Exchange Studies Of Highly Charged Ions On Atomic Hydrogen

Solar Wind Charge Exchange Studies Of Highly Charged Ions On Atomic Hydrogen

Low-energy charge transfer betweenC5+and atomic hydrogen

Charge exchange in C6++ H (1s) collisions at low energies

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Interaction of Fully Stripped, Hydrogenlike and Heliumlike C, N, O, Ne and Ar Ions with H and He Atoms and H₂Molecules

Charge exchange in C⁶⁺+ H (1s) collisions at low energies