An approach for multi-color action spectroscopy of highly excited states of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si25.svg"><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math>

Znotins, Aigars; Grussie, Florian; Wolf, A.; Urbain, Xavier; Kreckel, H.

doi:10.1016/j.jms.2021.111476

Cited by 7 publications

(2 citation statements)

References 59 publications

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“…The contributions deal with the diatomics NO + [68] and NO [83] and with the early universe molecule candidate H 2 He + [57]. Three manuscripts address one of Stephan's favorite molecules, H + 3 : one involving recombination [71], one proposing how to access very highly excited rovibrational levels [84], and one on forbidden rotational transitions and their importance to astrophysics [88]. Rovibrational spectra of CH + -He and CH + -He 4 are also reported [55].…”

Section: Papers In This Vsimentioning

confidence: 99%

Laboratory spectroscopy for astrophysics: Festschrift for Stephan Schlemmer

Jensen

Asvany

Thorwirth

et al. 2021

Journal of Molecular Spectroscopy

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Section: Papers In This Vsimentioning

confidence: 99%

Laboratory spectroscopy for astrophysics: Festschrift for Stephan Schlemmer

Jensen

Asvany

Thorwirth

et al. 2021

Journal of Molecular Spectroscopy

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“…The experimental method for rotational state probing used here, employing J-dependent resonances in single-step photodissociation, generally cannot be transferred to other ion species. However, effort is underway [51] to develop Jdependent photodissociation schemes for additional small ions in cryogenic storage rings. For most systems, such schemes will include intermediate laser excitation steps similar to the resonant multiphoton dissociation process earlier realized in ion traps [52].…”

mentioning

confidence: 99%

Laser-probing the rotational cooling of molecular ions by electron collisions

Kálosi,

Grieser,

von Hahn

et al. 2022

Preprint

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We present state-selected measurements of rotational cooling and excitation rates of CH + molecular ions by inelastic electron collisions. The experiments are carried out at the Cryogenic Storage Ring, making use of a monoenergetic electron beam at matched velocity in combination with state-sensitive laser-dissociation of the CH + ions for simultaneous monitoring of the rotational level populations. Employing storage times of up to 600 s, we create conditions where electron-induced cooling to the J = 0 ground state dominates over radiative relaxation, allowing for the experimental determination of inelastic electron collision rates to benchmark state-of-the-art theoretical calculations. On a broader scale, our experiments pave the way to probe inelastic electron collisions for a variety of molecular ions relevant in various plasma environments.

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