Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Kreckel, Holger"'
Autor:
Kálosi, Ábel, Grieser, Manfred, Isberner, Leonard W., Kreckel, Holger, Larson, Åsa, Neufeld, David A., Orel, Ann E., Paul, Daniel, Savin, Daniel W., Schippers, Stefan, Schmidt, Viviane C., Wolf, Andreas, Wolfire, Mark G., Novotný, Oldřich
We have experimentally studied dissociative recombination (DR) of electronically and vibrationally relaxed ArH$^+$ in its lowest rotational levels, using an electron--ion merged-beams setup at the Cryogenic Storage Ring. We report measurements for th
Externí odkaz:
http://arxiv.org/abs/2408.06808
Autor:
Schmidt, Viviane C., Čurík, Roman, Ončák, Milan, Blaum, Klaus, George, Sebastian, Göck, Jürgen, Grieser, Manfred, Grussie, Florian, von Hahn, Robert, Krantz, Claude, Kreckel, Holger, Novotný, Oldřich, Spruck, Kaija, Wolf, Andreas
Publikováno v:
Phys. Rev. Lett. 133, 183001 (2024)
Highly excited C$_2{}^{-}$ ions prominently feature electron detachment at a mean decay time near 3 milliseconds with hitherto unexplained origin. Considering various sources of unimolecular decay, we attribute the signal to the electronic C$^4\Sigma
Externí odkaz:
http://arxiv.org/abs/2405.06514
Autor:
Schmidt, Viviane C., Čurík, Roman, Ončák, Milan, Blaum, Klaus, George, Sebastian, Göck, Jürgen, Grieser, Manfred, Grussie, Florian, von Hahn, Robert, Krantz, Claude, Kreckel, Holger, Novotný, Oldřich, Spruck, Kaija, Wolf, Andreas
Publikováno v:
Phys. Rev. A 110, 042828 (2024)
On the millisecond to second time scale, stored beams of diatomic carbon anions C$_2{}^-$ from a sputter ion source feature unimolecular decay of yet unexplained origin by electron emission and fragmentation. To account for the magnitude and time dep
Externí odkaz:
http://arxiv.org/abs/2405.06493
Autor:
Kálosi, Ábel, Gamer, Lisa, Grieser, Manfred, von Hahn, Robert, Isberner, Leonard W., Jäger, Julia I., Kreckel, Holger, Neufeld, David A., Paul, Daniel, Savin, Daniel W., Schippers, Stefan, Schmidt, Viviane C., Wolf, Andreas, Wolfire, Mark G., Novotný, Oldřich
Observations of OH$^+$ are used to infer the interstellar cosmic ray ionization rate in diffuse atomic clouds, thereby constraining the propagation of cosmic rays through and the shielding by interstellar clouds, as well as the low energy cosmic ray
Externí odkaz:
http://arxiv.org/abs/2309.17015
Autor:
Ben-Shabo, Yehuda, Kurbanov, Adeliya, Schroter, Claus Dieter, Moshammer, Robert, Kreckel, Holger, Toker, Yoni
Velocity map imaging (VMI) is a powerful technique that allows to infer the kinetic energy of ions or electrons that are produced from a large volume in space with good resolution. The size of the acceptance volume is determined by the spherical aber
Externí odkaz:
http://arxiv.org/abs/2308.01005
Autor:
Bourlot, Jacques Le, Roueff, Evelyne, Petit, Franck Le, Kehrein, Florian, Oetjens, Annika, Kreckel, Holger
The triatomic hydrogen ion H3+ is one of the most important species for the gas phase chemistry of the interstellar medium. Observations of H3+ are used to constrain important physical and chemical parameters of interstellar environments. However, th
Externí odkaz:
http://arxiv.org/abs/2303.16070
Autor:
Paul, Daniel, Grieser, Manfred, Grussie, Florian, von Hahn, Robert, Isberner, Leonard W., Kálosi, Ábel, Krantz, Claude, Kreckel, Holger, Müll, Damian, Neufeld, David A., Savin, Daniel W., Schippers, Stefan, Wilhelm, Patrick, Wolf, Andreas, Wolfire, Mark G., Novotný, Oldřich
Observations of CH$^+$ are used to trace the physical properties of diffuse clouds, but this requires an accurate understanding of the underlying CH$^+$ chemistry. Until this work, the most uncertain reaction in that chemistry was dissociative recomb
Externí odkaz:
http://arxiv.org/abs/2208.14927
Autor:
Kálosi, Ábel, Grieser, Manfred, von Hahn, Robert, Hechtfischer, Ulrich, Krantz, Claude, Kreckel, Holger, Müll, Damian, Paul, Daniel, Savin, Daniel Wolf, Wilhelm, Patrick, Wolf, Andreas, Novotný, Oldřich
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
Externí odkaz:
http://arxiv.org/abs/2203.17124
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Akademický článek
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