Experimental and theoretical study of intramultiplet transitions in collisions of C(3P) and Si(3P) with He

Picard, Sébastien D. Le; Honvault, Pascal; Bussery‐Honvault, Béatrice; Canosa, André; Laubé, Sylvain; Launay, Jean–Michel; Rowe, B. R.; Chastaing, Delphine; Sims, Ian

doi:10.1063/1.1518026

Cited by 20 publications

(12 citation statements)

References 39 publications

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“…Usually they are included up to a highest level (l 0 ) chosen on physical ground.References. -(1)Launay & Roueff (1977a), (2)Lavendy et al (1991);; LePicard et al (2002), (3) Roueff & LeBourlot (1990), (4)Schroder et al (1991), (5)Pequignot & Aldrovandi (1976), (…”

mentioning

confidence: 99%

A Model for Atomic and Molecular Interstellar Gas: The Meudon PDR Code

Petit

Nehmé

Bourlot

et al. 2006

ASTROPHYS J SUPPL S

478

587

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We present the revised "Meudon" model of Photon Dominated Region (PDR code), presently available on the web under the Gnu Public Licence at: http://aristote.obspm.fr/MIS. General organisation of the code is described down to a level that should allow most observers to use it as an interpretation tool with minimal help from our part. Two grids of models, one for low excitation diffuse clouds and one for dense highly illuminated clouds, are discussed, and some new results on PDR modelisation highlighted.

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mentioning

confidence: 99%

A Model for Atomic and Molecular Interstellar Gas: The Meudon PDR Code

Petit

Nehmé

Bourlot

et al. 2006

ASTROPHYS J SUPPL S

478

587

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“…A typical example is the spin-orbit (de-)excitation of ground-state atomic carbon, C( 3 P j ) → C( 3 P j ), in collisions with He or H 2 . 24,25 This process is highly relevant for interstellar cloud cooling and plays an important role in chemical modelling of the interstellar medium. 26,27 To date, several experimental and theoretical studies concerning the collision-induced spin-orbit transitions in C( 3 P j ) atoms have been published.…”

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confidence: 99%

“…26,27 To date, several experimental and theoretical studies concerning the collision-induced spin-orbit transitions in C( 3 P j ) atoms have been published. 24,25,[28][29][30][31][32] In particular, Bergeat et al reported experimental and theoretical integral cross sections (ICSs) for C( 3 P 0 ) + He → C( 3 P 1 / 3 P 2 ) + He collisions. 24 The excellent agreement between experiment and theory allowed a detailed description of resonance features in the collision energy dependent ICSs.…”

Section: Graphical Toc Entrymentioning

confidence: 99%

High-resolution imaging of C + He collisions using Zeeman deceleration and VUV detection

Plomp,

Wang,

Lique

et al. 2021

Preprint

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High-resolution measurements of angular scattering distributions provide a sensitive test for theoretical descriptions of collision processes. Crossed beam experiments employing a decelerator and velocity map imaging have proven successful to probe collision cross sections with extraordinary resolution. However, a prerequisite to exploit these possibilities is the availability of a near-threshold state-selective ionization scheme to detect the collision products, which for many species is either absent or inefficient. We present the first implementation of recoil-free vacuum ultraviolet (VUV) based detection in scattering experiments involving a decelerator and velocity map imaging. This allowed for high-resolution measurements of stateresolved angular scattering distributions for inelastic collisions between Zeeman-decelerated carbon C( 3 P 1 ) atoms and helium atoms. We fully resolved diffraction oscillations in the angular distributions, which showed excellent agreement with the distributions predicted by quantum scattering calculations. Our approach offers exciting prospects to investigate a large range of scattering processes with unprecedented precision.

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“…Bennett et al (2003) studied the role of quasi-bound states in the formation of LiH. Atom collisions can also result in changes in internal energy and recent work includes: Li with H (Belyaev & , He * with He (Vrinceanu & Sadeghpour 2002), and C and S with He (Le Picard et al 2002).…”

Section: Ion-atom and Atom-atom Collisionsmentioning

confidence: 99%