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n-changing population of Rydberg states by low-energy electron-Rydberg collisions.
J Chem Phys
October 2024
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
Inelastic n-changing collisions play an important role in the evolution of Rydberg atoms into ultracold plasmas. However, for the initially intermediate n (n ∼ 40) Rydberg states, these collisions can hardly be observed due to the low electron temperature in ultracold plasmas. In this work, we designed an experimental scheme to facilitate collisions between free electrons at 1.
View Article and Find Full Text PDFSolving Vibronic Dynamics in Electron Continuum.
J Chem Theory Comput
April 2024
Faculty of Mathematics and Physics, Institute of Theoretical Physics, Charles University, V Holešovičkách 2, 180 00 Prague, Czech Republic.
We present a general two-dimensional model of conical intersection between metastable states that are vibronically coupled not only directly but also indirectly through a virtual electron in the autodetachment continuum. This model is used as a test ground for the design and comparison of iterative solvers for resonance dynamics in low-energy electron-molecule collisions. Two Krylov-subspace methods with various preconditioning schemes are compared.
View Article and Find Full Text PDFCorrelated ion-(ion/neutral) time of flight mass spectrometer.
Rev Sci Instrum
April 2023
Institut de Physique des 2 Infinis, Université Lyon 1, Université de Lyon, CNRS/IN2P3, UMR5822, F-69003 Lyon, France.
The fragmentation of molecular systems into ions and neutral species is ubiquitous in fundamental and applied science. While the ion fragments are relatively easily detected by mass spectrometry technique, the information on the neutral product that is formed in correlation is challenging. In this contribution, we present a detailed description of the correlated ion-(ion/neutral) time of flight mass spectrometer, which is dedicated to the study of molecular dissociation induced by electrons at low energies (<20 eV).
View Article and Find Full Text PDFFragmentation dynamics and absolute dissociative electron attachment cross sections in the low energy electron collision with ethanol.
Phys Chem Chem Phys
October 2023
Indian Institute of Science Education & Research Kolkata, Mohanpur 741246, India.
Dissociative electron attachment (DEA) to ethanol has been probed to study fragmentation dynamics using Time-of-Flight (ToF) mass spectrometric technique. Several fragment ions, namely, H, O, OH, CHO and CHO have been observed. Extra effort has been made to detect low mass ions (here, H).
View Article and Find Full Text PDFElectron Scattering from Methyl Formate (HCOOCH): A Joint Theoretical and Experimental Study.
J Phys Chem A
September 2023
Institute of Physics and Applied Computer Science, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, ul. Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.
Elastic low-energy electron collisions with methyl formate have been studied theoretically at the level of various theories. The elastic integral cross section was calculated using Schwinger multichannel and R-matrix methods, in the static-exchange and static-exchange plus polarization levels of approximations for energies up to 15 eV. The absolute total cross section for electron scattering from methyl formate has been measured in a wide energy range (0.
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