Acceleration correction to the binary-encounter Bethe model for the electron-impact ionization of molecules

Wang, Yuan-Cheng; Visentin, Giorgio; Jiao, Li Guang; Fritzsche, Stephan

doi:10.1103/physreva.109.022804

Phys. Rev. A

2024

DOI: 10.1103/physreva.109.022804

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Acceleration correction to the binary-encounter Bethe model for the electron-impact ionization of molecules

Yuan-Cheng Wang,

Giorgio Visentin,

Li Guang Jiao

et al.

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Cited by 4 publications

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Ionization study of cyanopolyynes HC_nN (n=1–17) by electron and positron impact

Thomas,

Gupta

2024

Phys. Scr.

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In this work, we investigate how electrons and positrons interact with important space molecules, specifically cyanopolyynes HCnN(n= 1-17). These are linear molecules detected in the interstellar medium (ISM) and observed in regions like Sgr B2, Taurus Molecular Cloud-1 (TMC-1), the circumstellar envelope of the carbon star IRC +10216, and cold molecular clouds. We apply the binary-encounter Bethe (BEB) model to determine the ionization cross sections for both electron and positron impacts on these molecules, covering an energy range from ionization threshold to 5 keV. These molecules play a crucial role in astrophysics, astrochemistry, and atmospheric studies. However, their data are limited, particularly concerning positron impact ionization, which is being calculated for the first time in this study. Due to the complexity of these molecules, experimental data are lacking and only a small amount of theoretical information is currently available. Additionally, we have calculated properties like polarizability, dipole moment and highest occupied molecular orbital (HOMO) energy for these molecules using the Hartree-Fock (HF) approximation. We have also studied the correlation of the maximum ionization cross section with the polarizability and ionization energy of the targets. These data are important for understanding cyanopolyynes and will help scientists model chemical processes in space.

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Ionization study of cyanopolyynes HC_nN (n=1–17) by electron and positron impact

Thomas,

Gupta

2024

Phys. Scr.

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Comparative experimental and theoretical study on doubly differential electron-impact ionization cross sections of pyrimidine

Dinger,

Baek,

Rabus

2024

Phys. Rev. A

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Negative imaginary potential to model ionization in atoms and molecules by electron impact

Falkowski,

Bettega,

Lima

2024

Phys. Rev. A

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Acceleration correction to the binary-encounter Bethe model for the electron-impact ionization of molecules

Cited by 4 publications

References 49 publications

Ionization study of cyanopolyynes HC_nN (n=1–17) by electron and positron impact

Ionization study of cyanopolyynes HC_nN (n=1–17) by electron and positron impact

Comparative experimental and theoretical study on doubly differential electron-impact ionization cross sections of pyrimidine

Negative imaginary potential to model ionization in atoms and molecules by electron impact

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Acceleration correction to the binary-encounter Bethe model for the electron-impact ionization of molecules

Cited by 4 publications

References 49 publications

Ionization study of cyanopolyynes HCnN (n=1–17) by electron and positron impact

Ionization study of cyanopolyynes HCnN (n=1–17) by electron and positron impact

Comparative experimental and theoretical study on doubly differential electron-impact ionization cross sections of pyrimidine

Negative imaginary potential to model ionization in atoms and molecules by electron impact

Contact Info

Product

Resources

About

Ionization study of cyanopolyynes HC_nN (n=1–17) by electron and positron impact

Ionization study of cyanopolyynes HC_nN (n=1–17) by electron and positron impact