Zobrazeno 1 - 10
of 15 001
pro vyhledávání: '"Cunningham, B. A."'
Autor:
Arthur-Baidoo, E., Danielson, J. R., Surko, C. M., Cassidy, J. P., Gregg, S. K., Hofierka, J., Cunningham, B., Patterson, C. H., Green, D. G.
Publikováno v:
Phys. Rev. A 109, 062801 (2024)
Annihilation spectra are presented for aromatic and heterocyclic ring molecules resolved as a function of incident positron energy using a trap-based positron beam. Comparisons with the vibrational mode spectra yield positron-molecule binding energie
Externí odkaz:
http://arxiv.org/abs/2312.02779
Publikováno v:
J. Chem. Phys. 160, 084304 (2024), Emerging Investigators Special Collection 2024
The energetic stability of positron di-anion systems [A$^-;e^+;$A$^-$] is studied via many-body theory, where $A^-$ includes H$^{-}$, F$^{-}$, Cl$^{-}$ and the molecular anions (CN)$^{-}$ and (NCO)$^{-}$. Specifically, the energy of the system as a f
Externí odkaz:
http://arxiv.org/abs/2311.16318
Positron binding energies in the negative ions H$^-$, F$^-$, Cl$^-$ and Br$^-$, and the closed-shell atoms Be, Mg, Zn and Ca, are calculated via a many-body theory approach developed by the authors [J.~Hofierka \emph{et al.} Nature~{\bf 608}, 688-693
Externí odkaz:
http://arxiv.org/abs/2311.13066
Publikováno v:
Phys. Rev. A Letter 109 L040801 (2024)
Positron binding energies in halogenated hydrocarbons are calculated \emph{ab initio} using many-body theory. For chlorinated molecules, including planars for which the interaction is highly anisotropic, very good to excellent agreement with experime
Externí odkaz:
http://arxiv.org/abs/2303.05359
Publikováno v:
Phys. Rev. Lett. 130, 263001 (2023)
The recently developed ab initio many-body theory of positron molecule binding [J. Hofierka et al., Nature, 606, 688 (2022)] is combined with the shifted pseudostates method [A. R. Swann and G. F. Gribakin, Phys. Rev. A 101, 022702 (2020)] to calcula
Externí odkaz:
http://arxiv.org/abs/2303.02083
Autor:
VOEKS, ROBERT
Publikováno v:
Economic Botany, 2014 Dec . 68(4), 454-455.
Externí odkaz:
https://www.jstor.org/stable/43304465
Autor:
WOOD, PETER
Publikováno v:
The International Forestry Review, 2007 Sep 01. 9(3), 814-815.
Externí odkaz:
https://www.jstor.org/stable/43739725
Autor:
Runk, Julie Velásquez
Publikováno v:
Human Ecology, 2006 Oct 01. 34(5), 735-736.
Externí odkaz:
https://www.jstor.org/stable/27654151
Publikováno v:
Nature, 606, 688 (2022)
Positrons bind to molecules leading to vibrational excitation and spectacularly enhanced annihilation. Whilst positron binding energies have been measured via resonant annihilation spectra for $\sim$90 molecules in the past two decades, an accurate \
Externí odkaz:
http://arxiv.org/abs/2105.06959
Publikováno v:
Journal of Chemical Physics; 2/28/2024, Vol. 160 Issue 8, p1-7, 7p