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Dissociative electron attachment (DEA) is one of the processes that shows a strong coupling between the nuclear and electronic degrees of freedom in a molecule. This coupling results in an efficient transformation of the kinetic energy of…

化学物理 · 物理学 2024-04-17 Suvasis Swain , Akshay Kumar , E. Krishnakumar , Vaibhav S. Prabhudesai

The absolute electron capture cross sections for single and double charge exchanges between the highly charged ions O6+ and CO2, CH4, H2, N2, the dominant collision processes in the solar wind, have been measured in the energy from 7 keV*q…

原子物理 · 物理学 2021-01-25 J. Han , L. Wei , B. Wang , B. Ren , W. Yu , Y. Zhang , Y. Zou , L. Chen , J. Xiao , B. Wei

We report on the measurements of the total charge changing fragmentation cross sections in high-energy nucleus-nucleus collisions using Fe, Si and Pb incident ions. Several stacks of CR39 nuclear track detectors with different target…

The fragmentation of 1-propanol resulting from dissociative electron attachment has been explored across an energy range of 3.5 to 16 eV. Four distinct ion species are identified: $\text{H}^{-}$, $\text{O}^{-}$, $\text{OH}^{-}$, and…

原子与分子团簇 · 物理学 2026-02-06 Soumya Ghosh , Dipayan Chakraborty , Anirban Paul , Dhananjay Nandi

In this paper, we discuss the dissociative electron attachment process in Methane. Kinetic energy and angular distributions of H^{-} and CH_{2}^{-} fragment anions across the broad resonance about 10 eV is reported. Angular distribution of…

化学物理 · 物理学 2010-07-30 N. Bhargava Ram , E. Krishnakumar

The optical emission spectrum of acetylene excited by monoenergetic electrons was studied in the range of 190 nm to 660 nm. The dissociative excitation and dissociative ionization associated with excitation of the ions initiated by electron…

原子物理 · 物理学 2022-12-12 Juraj Országh , Marián Danko , Peter Čechvala , Štefan Matejčík

Measurements of the differential and double-differential Drell-Yan cross sections are presented using an integrated luminosity of 4.5 (4.8) inverse femtobarns in the dimuon (dielectron) channel of proton-proton collision data recorded with…

高能物理 - 实验 · 物理学 2013-12-17 CMS Collaboration

The Ni(CO)4, Cr(CO)6, Co(CO)3NO are some of the most common precursors used for the focused electron-induced deposition. Some of the compounds, even though extensively used have high requirements when it comes to handling, being explosives,…

材料科学 · 物理学 2022-01-27 Maria Pintea , Nigel Mason , Maria Tudorovskaya

Absolute cross sections for charge-exchange, ionization and excitation in Na$% ^{+}-$Ne and Na$^{+}-$Ar collisions were measured in the ion energy range $% 0.5-10$ keV using a refined version of a capacitor method, and collision and optical…

原子物理 · 物理学 2016-01-20 R. A. Lomsadze , M. R. Gochitashvili , R. Ya. Kezerashvili

We present a new technique to calculate the cross-section for diffractive vector meson production and DVCS in electron-ion collisions based on the dipole model. The measurement of these processes can provide valuable information on…

高能物理 - 唯象学 · 物理学 2013-02-28 Tobias Toll , Thomas Ullrich

Absolute cross sections for electron-impact single ionisation (EISI) of multiply charged tungsten ions (W$^{q+}$) with charge states in the range $ 11 \leq q \leq 18$ in the electron-ion collision energy ranges from below the respective…

原子物理 · 物理学 2020-01-08 D. Schury , A. Borovik, , B. Ebinger , F. Jin , K. Spruck , A. Müller , S. Schippers

We report experimental results on three-dimensional momentum imaging measurements of anions generated via dissociative electron attachment to gaseous formamide. From the momentum images, we analyze the angular and kinetic energy…

We present new experimental and theoretical cross sections for electron-impact single ionization of Xe$^{12+}$ and Xe$^{13+}$ ions, and double ionization of Xe$^{12+}$, Xe$^{13+}$ and Xe$^{14+}$ ions for collision energies from the…

Absolute cross sections are measured for charge-exchange, ionization, and excitation within the same experimental setup for the Li$^{+}-$Ar, K$^{+}-$ Ar, and Na$^{+}-$ He collisions in the ion energy range $0.5-10$ keV. Results of our…

We calculate the cross-section of ionization by free-electron impacts in high or moderate density plasmas. We show that the so-called ionization potential depression (IPD) strongly affects the magnitude of the cross-section in the…

原子物理 · 物理学 2023-09-14 Djamel Benredjem , Jean-Christophe Pain , Annette Calisti , Sandrine Ferri

Electron removal in collisions of alpha particles with neon dimers is studied using an independent-atom-independent-electron model based on the semiclassical approximation of heavy-particle collision physics. The dimer is assumed to be…

原子物理 · 物理学 2022-07-06 Tom Kirchner

Inclusive energy spectra of the complex fragments (3 $\leq$ Z $\leq$ 5) emitted in the reactions $^{12}$C (77 MeV)+ $^{28}$Si, $^{11}$B (64 MeV)+ $^{28}$Si and $^{12}$C (73 MeV)+ $^{27}$Al (all having the same excitation energy of $ \sim$…

We present velocity map imaging data on intramolecular ion-pair dissociation (IPD) of carbonyl sulfide (OCS) induced by electron impact over the 20 eV to 45 eV energy range. Two distinct IPD pathways were resolved: CO+ + S- (threshold 14.8…

原子与分子团簇 · 物理学 2026-04-21 Narayan Kundu , Soumya Ghosh , Dhananjay Nandi

Measurements of dielectron production in p+p and p+d collisions with beam kinetic energies from 1.04 to 4.88 GeV are presented. The differential cross section is presented as a function of invariant pair mass, transverse momentum, and…

We present a kinematically complete study of dissociative electron attachment (DEA) in linear OCS molecules, focusing on how electrons resonantly attach and trigger dissociation. Near the Franck-Condon regime, DEA is dominated by molecular…

原子与分子团簇 · 物理学 2025-05-02 Narayan Kundu , Meenakshi Rana , Aryya Ghosh , Dhananjay Nandi