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Charge state distributions of $^{56}$Fe and $^{58}$Ni projectile ions passing through thin carbon foils have been studied in the energy range of 1.44 - 2.69 MeV/u using a novel method from the x-ray spectroscopy technique. Interestingly the…

Atomic Physics · Physics 2015-09-01 Prashant Sharma , Tapan Nandi

Charge exchange is an atomic process that primarily occurs at interfaces between the neutral and ionized gas. The study of the process has been carried out on three levels: the theoretical calculation of the cross sections, the laboratory…

Instrumentation and Methods for Astrophysics · Physics 2023-02-28 Liyi Gu , Chintan Shah

Charge state distributions of various projectile ions passing through thin carbon foils have been studied in the energy range of 0.7-3.0 MeV/u using x-ray spectroscopy. This technique is found to be appropriate to segregate the charge state…

Plasma Physics · Physics 2015-06-29 Prashant Sharma , Tapan Nandi

Progress in the study of collisions of multiply charged ions with surfaces is reviewed with the help of a few recent examples. They range from fundamental quasi-one electron processes to highly complex ablation and material modification…

Atomic Physics · Physics 2017-08-23 J. Burgdörfer , C. Lemell , K. Schiessl , B. Solleder , C. Reinhold , K. T\H okési , L. Wirtz

Experimental charge exchange and energy loss data for the transmission of slow highly charged Xe ions through ultra-thin polymeric carbon membranes are presented. Surprisingly, two distinct exit charge state distributions accompanied by…

Charge exchange collisions between ultracold fermionic 6Li atoms and 40Ca+ ions are observed in the mK temperature range. The reaction product of the charge exchange collision is identified via mass spectrometry during which the motion of…

Atomic Physics · Physics 2015-04-01 Shinsuke Haze , Ryoichi Saito , Munekazu Fujinaga , Takashi Mukaiyama

Indirect methods using nucleus-nucleus reactions at high energies (here, high energies mean $\sim$ 50 MeV/nucleon and higher) are now routinely used to extract information of interest for nuclear astrophysics. This is of extreme relevance…

Nuclear Theory · Physics 2015-10-05 C. A. Bertulani

The theory of heavy ion single charge exchange reactions is reformulated. In momentum space the reaction amplitude factorizes into a product of projectile and target transition form factors, folded with the nucleon-nucleon isovector…

Nuclear Theory · Physics 2018-10-31 Horst Lenske , Jessica I. Bellone , Maria Colonna , Jose-Antonio Lay

Nucleon exchange mechanism is investigated in deep-inelastic symmetric heavy-ion collisions in the basis of the Stochastic Mean-Field approach. By extending the previous work to off-central collisions, analytical expression is deduced for…

Nuclear Theory · Physics 2015-06-22 B. Yilmaz , S. Ayik , D. Lacroix , O. Yilmaz

Charge exchange X-ray emission provides unique insights into the interactions between cold and hot astrophysical plasmas. Besides its own profound science, this emission is also technically crucial to all observations in the X-ray band,…

High Energy Astrophysical Phenomena · Physics 2016-03-23 Liyi Gu , Jelle Kaastra , A. J. J. Raassen

Charge exchange is an important process for the modeling of X-ray spectra obtained by the Chandra, XMM-Newton, and Suzaku X-ray observatories, as well as the anticipated Astro-H mission. The understanding of the observed X-ray spectra…

High Energy Astrophysical Phenomena · Physics 2017-02-28 P. D. Mullen , R. S. Cumbee , D. Lyons , P. C. Stancil

We present evidence that the detection of surface magnetism without the application of an external magnetic field is possible by studying the x-ray emission of highly charged ions interacting at grazing incidence with the sample. Measuring…

Hartree-Fock atom in a strong electric static field is considered. It is demonstrated that exchange between outer and inner electrons, taken into account by the so-called Fock term affects strongly the long-range behavior of the inner…

Atomic Physics · Physics 2015-05-13 M. Ya. Amusia

We study the layer of electrons on bare strange star surfaces, taking the Dirac exchange-energy into account. Because electrons are fermions, the electron wave function must be of exchange-antisymmetry. The Dirac exchange-energy originates,…

Astrophysics · Physics 2007-12-18 Hai-Chuan Guo , Ren-Xin Xu , Cheng-Min Zhang

We develop an Over Barrier Model for computing charge exchange between ions and one-active-electron atoms at low impact energies. The main feature of the model is the treatment of the barrier crossing process by the electron within a…

Atomic Physics · Physics 2007-05-23 F. Sattin

The charge states of ions in dense plasmas fluctuate due to collisional ionization and recombination. Here we show how, by modifying the ion interaction potential, these fluctuations can mediate energy exchange between the plasma electrons…

Plasma Physics · Physics 2021-07-15 R. A. Baggott , S. J. Rose , S. P. D. Mangles

Charge exchange (CX) is a semi-resonant recombination process that can lead to spectral line emission in the X-ray band. It occurs in nearly any environment where hot plasma and cold gas interact: in the solar system, in comets and…

High Energy Astrophysical Phenomena · Physics 2020-03-11 Gabriele L. Betancourt-Martinez , Renata S. Cumbee , Maurice A. Leutenegger

It has been proposed that the charge exchange (CX) process at the interface between hot and cool interstellar gases could contribute significantly to the observed soft X-ray emission in star forming galaxies. We analyze the XMM-Newton/RGS…

Astrophysics of Galaxies · Physics 2015-06-22 Shuinai Zhang , Q. Daniel Wang , Li Ji , Randall K. Smith , Adam R. Foster , Xin Zhou

Transfer-ionization in fast collisions between a bare ion and an atom, in which one of the atomic electrons is captured by the ion whereas another one is emitted, crucially depends on dynamic electron-electron correlations. We show that in…

Atomic Physics · Physics 2013-05-15 A. B. Voitkiv

We investigate active electrolytes within the mean-field level of description. The focus is on how the double-layer structure of passive, thermalized charges is affected by active dynamics of all constituting ions. One feature of active…

Soft Condensed Matter · Physics 2018-05-23 Derek Frydel , Rudolf Podgornik
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