Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Curik, Roman"'
This article solves two major tasks that frequently arise in the theory of electron collisions with a target molecular cation. First, it extends the energy-dependent frame transformation treatment(EDFT), which is needed to map fixed-nuclei electron-m
Externí odkaz:
http://arxiv.org/abs/2410.06135
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:
Čurík, Roman, Horáček, Jiří
Publikováno v:
In Computer Physics Communications January 2025 306
A numerically solvable two-dimensional (2D) model, employed by the authors to study the dissociative recombination of H$_2^+$ in the ungerade symmetry [Phys. Rev. A $\mathbf{98}$, 062706 (2018)], is extended to describe the collision process in the g
Externí odkaz:
http://arxiv.org/abs/2112.10820
Publikováno v:
Phys. Rev. Lett. 124, 043401 (2020)
The HeH$^+$ cation is the simplest molecular prototype of the indirect dissociative recombination (DR) process that proceeds through electron capture into Rydberg states of the corresponding neutral molecule. This Letter develops the first applicatio
Externí odkaz:
http://arxiv.org/abs/1910.02628
Publikováno v:
Phys. Rev. A 101, 012709 (2020)
The energy-dependent frame transformation theory of Gao and Greene 1990 [Phys. Rev. A {\bf 42}, 6946 (1990)] is extended to yield quantitatively accurate description of the dissociative recombination process. Evidence is presented to show that direct
Externí odkaz:
http://arxiv.org/abs/1910.02631
Publikováno v:
Phys. Rev. A 98, 062706 (2018)
An alternative method is introduced to solve a simple two-dimensional models describing vibrational excitation and dissociation processes during the electron-molecule collisions. The model works with one electronic and one nuclear degree of freedom.
Externí odkaz:
http://arxiv.org/abs/1810.09124
Autor:
Tarana, Michal, Čurík, Roman
Publikováno v:
Phys. Rev. A 99, 012708 (2019)
$R$-matrix calculations of the electron collisions with lithium atom at energies below the $3s$ excitation threshold are presented. The $^1S^e$, $^3S^e$ and $^1P^o$ phase shifts calculated in the near-threshold energy range are in excellent agreement
Externí odkaz:
http://arxiv.org/abs/1807.07862
Publikováno v:
Phys. Rev. A 97, 052704 (2018)
The regularized method of analytic continuation is used to study the low-energy negative ion states of beryllium (configuration 2$s^2\varepsilon p\; ^2P$) and magnesium (configuration 3$s^2\varepsilon p\; ^2P$) atoms. The method applies an additional
Externí odkaz:
http://arxiv.org/abs/1803.05178