Ion-pair dissociation of highly excited carbon clusters: Size and charge effects

Launoy, Thibaut; Béroff, K.; Chabot, M.; Martinet, G.; Padellec, A. Le; Pino, T.; Bouneau, S.; Vaeck, Nathalie; Liévin, Jacques; Féraud, Géraldine; Loreau, Jérôme; Mahajan, Thejus T. M

doi:10.1103/physreva.95.022711

Cited by 4 publications

(1 citation statement)

References 39 publications

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“…We interpret this result by the fact that for high excitation energies (∼above 20 eV) most of the dissociation occurs into fragment's electronic excited states, then reducing the energy available for fragment's kinetic energies. Such a scenario is plausible when examining the potential energy surfaces of excited states in diatomics, such as C 2 + for instance (Launoy et al 2017).…”

Section: Calculated Internal Energy Distributions Using the Iae/ Ctmc...mentioning

confidence: 99%

Excitation, ionization, neutralization and anionic production in collisions of C⁺, N⁺and C_nN⁺(n= 1–3) with He atoms at 2.2 a.u. velocity; cross sections and dissociation branching ratios

Mahajan¹,

Béroff²,

Pons³

et al. 2019

J. Phys. B: At. Mol. Opt. Phys.

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We present measurements of absolute cross sections for projectile ionization and electron capture for C+, N+ and CnN+ (n = 1–3) projectiles impinging on He atoms with velocity v = 2.2 a.u. Single and multiple electron processes are considered, as well as projectile dissociative excitation in the case of incident molecular cations. The measurements are compared to Classical Trajectory Monte Carlo (CTMC) calculations for C+, N+ + He collisions in the framework of the independent electron approximation. CnN+ + He systems are described by means of the independent atom and electron (IAE) model which represents the molecule as a set of independent atoms. The impact parameter probabilities for excitation, ionization and electron transfer in C, C+, N–He collisions, underlying the IAE calculations, are also obtained by means of CTMC computations. A good agreement is generally found between measured and calculated cross sections, except for anionic production of C− and CnN−. The internal energy deposit due to electron excitation in CnN+ is also calculated with the IAE/CTMC model and compared to semi-empirical estimates based on either measured dissociation branching ratios for C2N+ and C3N+ (IdBarkach et al 2018 Mol. Astrophys. 12 25) or measured fragments kinetic energy release for CN+. Finally, measured dissociation branching ratios of excited CnN− and CnNQ+ species, with 1 ≤ n ≤3 and 0 ≤ Q ≤ 4, are reported.

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Section: Calculated Internal Energy Distributions Using the Iae/ Ctmc...mentioning

confidence: 99%

Excitation, ionization, neutralization and anionic production in collisions of C⁺, N⁺and C_nN⁺(n= 1–3) with He atoms at 2.2 a.u. velocity; cross sections and dissociation branching ratios

Mahajan¹,

Béroff²,

Pons³

et al. 2019

J. Phys. B: At. Mol. Opt. Phys.

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Adsorption and dissociation of gas-phase HCl molecules on Al17q (q = −2 − +3) ions

Liu

Yan

2019

J Mol Model

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Semiempirical breakdown curves of C2N(+) and C3N(+) molecules; application to products branching ratios predictions of physical and chemical processes involving these adducts

IdBarkach

Mahajan

Chabot

et al. 2018

Molecular Astrophysics

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Ion-pair dissociation of highly excited carbon clusters: Size and charge effects

Abstract: 13We present measurements of ion pair dissociation (IPD) of highly excited neutral and ionized carbon clusters C

Cited by 4 publications

References 39 publications

Excitation, ionization, neutralization and anionic production in collisions of C⁺, N⁺and C_nN⁺(n= 1–3) with He atoms at 2.2 a.u. velocity; cross sections and dissociation branching ratios

Excitation, ionization, neutralization and anionic production in collisions of C⁺, N⁺and C_nN⁺(n= 1–3) with He atoms at 2.2 a.u. velocity; cross sections and dissociation branching ratios

Adsorption and dissociation of gas-phase HCl molecules on Al17q (q = −2 − +3) ions

Semiempirical breakdown curves of C2N(+) and C3N(+) molecules; application to products branching ratios predictions of physical and chemical processes involving these adducts

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Ion-pair dissociation of highly excited carbon clusters: Size and charge effects

Abstract: 13We present measurements of ion pair dissociation (IPD) of highly excited neutral and ionized carbon clusters C

Cited by 4 publications

References 39 publications

Excitation, ionization, neutralization and anionic production in collisions of C+, N+and CnN+(n= 1–3) with He atoms at 2.2 a.u. velocity; cross sections and dissociation branching ratios

Excitation, ionization, neutralization and anionic production in collisions of C+, N+and CnN+(n= 1–3) with He atoms at 2.2 a.u. velocity; cross sections and dissociation branching ratios

Adsorption and dissociation of gas-phase HCl molecules on Al17q (q = −2 − +3) ions

Semiempirical breakdown curves of C2N(+) and C3N(+) molecules; application to products branching ratios predictions of physical and chemical processes involving these adducts

Contact Info

Product

Resources

About

Excitation, ionization, neutralization and anionic production in collisions of C⁺, N⁺and C_nN⁺(n= 1–3) with He atoms at 2.2 a.u. velocity; cross sections and dissociation branching ratios

Excitation, ionization, neutralization and anionic production in collisions of C⁺, N⁺and C_nN⁺(n= 1–3) with He atoms at 2.2 a.u. velocity; cross sections and dissociation branching ratios