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We investigate the $\text{O}^+:\text{C}^+:\text{O}^+$ fragmentation channel of CO$_2^{3+}$ produced in slow collisions with Ar$^{q+}$ projectiles ($4 \le q \le 16$, velocities $\approx 0.3$ a.u). Using the native-frames method, we…

Atomic Physics · Physics 2026-01-08 Akash Srivastav , Sumit Srivastav , Bhas Bapat

We report on the fragmentation dynamics of triply charged, diatomic, molecular ions of NO and CO. Dissociative fragmentation after multiple ionization of NO and CO is studied under the impact of 200 keV proton beam using recoil-ion momentum…

Atomic Physics · Physics 2022-09-23 Avijit Duley , Narendra Nath Dutta , C. Bagdia , L. C. Tribedi , C. P. Safvan , A. H. Kelkar

We study theoretically the fragmentation of the helium dimer, $^4$He$_2$, into singly charged ions in collisions with relativistic highly-charged projectiles. We discuss the main mechanisms driving this process with the focus on the…

Atomic Physics · Physics 2022-06-22 B. Najjari , S. F. Zhang , X. Ma , A. B. Voitkiv

We investigate experimentally and theoretically the electron emission in collisions between He atoms and Li$^{q+}$ (q=1,2) projectiles at intermediate-high incident energies. We report on measured absolute values of double differential…

Atomic Physics · Physics 2015-06-19 D. Fregenal , J. M. Monti , J. Fiol , P. D. Fainstein , R. D. Rivarola , G. Bernardi , S. Suárez

We implement an independent-atom and independent-electron model to investigate the collision systems of He$^{2+}$ and He$^{+}$ ion projectiles impinging on a neon dimer target. The dimer is set to be stationary at its equilibrium bond…

Atomic and Molecular Clusters · Physics 2025-05-13 Darij Starko , Tom Kirchner

The electron removal and excitation channels in argon dimer target and helium ion projectile collision systems that facilitate interatomic Coulombic decay (ICD) are investigated. We implement an independent-atom and independent-electron…

Atomic and Molecular Clusters · Physics 2026-03-25 Darij Starko , Tom Kirchner

Electron capture processes for low energy Ar9+ ions colliding on Ar2 dimer targets are investigated, focusing attention on charge sharing as a function of molecule orientation and impact parameter. A preference in charge-asymmetric…

The correlations between the shape of rapidity distribution of the yield of light charged particles and the fragmentation modes in semi-peripheral collisions for $^{70}$Zn+$^{70}$Zn, $^{64}$Zn+$^{64}$Zn and $^{64}$Ni+$^{64}$Ni at the beam…

Nuclear Theory · Physics 2015-11-10 Yingxun Zhang , Chengshuang Zhou , Jixian Chen , Ning Wang , Kai Zhao , Zhuxia Li

Using the cold target recoil ion momentum spectroscopy (COLTRIMS) technique, we have measured the simultaneous projectile and target ionization in collisions of He$^+$ projectiles with a mixture of gaseous H$_2$ and D$_2$ for an incident…

The multiple electron loss of heavy projectiles in fast ion-atom collisions has been studied in the framework of the sudden perturbation approximation. Especially, a model is developed to calculate the cross sections for the loss of any…

We present measurements of the total projectile-electron-loss cross sections in O$^-$ + N$_2$ collisions in the energy range from 2.5 to 8.5 keV. Two different techniques, beam attenuation and the growth rate, are employed. The difference…

Atomic Physics · Physics 2026-02-17 A. A. Martínez , M. M. Sant'Anna , G. Hinojosa

The reaction mechanism of projectile fragmentation at intermediate energies has been investigated observing the target dependence of the production cross sections of very neutron-rich nuclei. Measurement of longitudinal momentum…

Scattering angle differential cross sections for the He+ + He single electron capture process are studied using plane wave Born approximation models for projectile energies between 30 keV and 1.89 MeV. Within this simplistic framework, we…

Atomic Physics · Physics 2019-02-01 A. L. Harris , A. Plumadore

Based on the isospin-dependent quantum molecular dynamics (IQMD) model, we aim to understand the effect of target fragmentation on various quantities i.e. collision rate, fragments multiplicity etc by simulating the collision between…

Nuclear Theory · Physics 2011-12-14 Variderjit Kaur , Bhawna Sharma , Suneel Kumar

Correlations between pairs of projectile-like fragments, emitted by the system ${^{16}O}+{^{197}Au}$ at the laboratory bombarding energy of 515 MeV, have been studied under two stipulated conditions: (1) at least one member of the pair is…

Nuclear Experiment · Physics 2008-11-26 Jayanti Rama Rao , H. Machner , G. Buhr , M. Nolte , M. Palarczyk

The collisions in four different reaction systems using $^{40,48}$Ca and $^{58,64}$Ni isotope beams and a Be target have been simulated using the Heavy Ion Phase Space Exploration and the Antisymmetrized Molecular Dynamics models. The…

Nuclear Experiment · Physics 2008-11-26 M. Mocko , M. B. Tsang , D. Lacroix , A. Ono , P. Danielewicz , W. G. Lynch , R. J. Charity

Fragmentation of highly charged molecular ions or clusters consisting of more than two atoms can proceed in an onestep synchronous manner where all bonds break simultaneously or sequentially by emitting one ion after the other. We separated…

We calculate the lowest-order contribution to the cross section for simultaneous excitation of projectile and target nuclei in relativistic heavy ion collisions. This process is, to leading order, non-classical and adds incoherently to the…

Nuclear Theory · Physics 2009-09-25 C. J. Benesh , J. L. Friar

The quasi-projectile (QP) properties are investigated in the Ar+Ni collisions at 95 A.MeV taking into account the intermediate velocity emission. Indeed, in this reaction, between 52 and 95 A.MeV bombarding energies, the number of particles…

The charge transfer reaction Ar+ + N2 --> Ar + N2+ has been investigated in a crossed beam experiment in combination with three-dimensional velocity map imaging. Angular differential state-to-state cross sections were determined as a…

Chemical Physics · Physics 2015-06-12 S. Trippel , M. Stei , J. A. Cox , R. Wester
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