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Nicolanti F, Caccia B, Cartoni A, Emfietzoglou D, Faccini R, Incerti S, Kyriakou I, Satta M, Tran HN, Mancini-Terracciano C. Calculation of electron interaction models in N 2 and O 2. Phys Med 2023; 114:102661. [PMID: 37703804 DOI: 10.1016/j.ejmp.2023.102661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/19/2023] [Accepted: 08/05/2023] [Indexed: 09/15/2023] Open
Abstract
Cosmic rays have the potential to significantly affect the atmospheric composition by increasing the rate and changing the types of chemical reactions through ion production. The amount and states of ionization, and the spatial distribution of ions produced are still open questions for atmospheric models. To precisely estimate these quantities, it is necessary to simulate particle-molecule interactions, down to very low energies. Models enabling such simulations require interaction probabilities over a broad energy range and for all energetically allowed scattering processes. In this paper, we focus on electron interaction with the two most abundant molecules in the atmosphere, i.e., N2 and O2, as an initial step. A set of elastic and inelastic cross section models for electron transportation in oxygen and nitrogen molecules valid in the energy range 10 eV - 1 MeV, is presented. Comparison is made with available theoretical and experimental data and a reasonable good agreement is observed. Stopping power is calculated and compared with published data to assess the general consistency and reliability of our results. Good overall agreement is observed, with relative differences lower than 6% with the ESTAR database.
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Affiliation(s)
- F Nicolanti
- Physics Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy; INFN, Sec. of Rome, p.le Aldo Moro, 2, 00185, Rome, Italy.
| | - B Caccia
- ISS(Italian National Institute of Health), V. Regina Elena, 299, 00161, Rome, Italy
| | - A Cartoni
- Chemistry Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy
| | - D Emfietzoglou
- Med. Phys. Lab., Dept of Medicine, University of Ioannina, 45110, Ioannina, Greece
| | - R Faccini
- Physics Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy; INFN, Sec. of Rome, p.le Aldo Moro, 2, 00185, Rome, Italy
| | - S Incerti
- Université de Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, Chemin du Solarium, 19, 33170, Gradignan, France
| | - I Kyriakou
- Med. Phys. Lab., Dept of Medicine, University of Ioannina, 45110, Ioannina, Greece
| | - M Satta
- Chemistry Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy; ISMN-CNR, p. Aldo Moro, 7, 00185, Rome, Italy
| | - H N Tran
- Université de Bordeaux, CNRS, LP2I Bordeaux, UMR 5797, Chemin du Solarium, 19, 33170, Gradignan, France
| | - C Mancini-Terracciano
- Physics Dep., Sapienza U. of Rome, p.le Aldo Moro, 5, 00185, Rome, Italy; INFN, Sec. of Rome, p.le Aldo Moro, 2, 00185, Rome, Italy
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Suzuki D, Kato H, Ohkawa M, Anzai K, Tanaka H, Limão-Vieira P, Campbell L, Brunger MJ. Electron excitation of the Schumann–Runge continuum, longest band, and second band electronic states in O2. J Chem Phys 2011; 134:064311. [DOI: 10.1063/1.3533442] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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