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Title: Investigating resonant low-energy electron attachment to formamide: Dynamics of model peptide bond dissociation and other fragmentation channels

Abstract

We report experimental results on three-dimensional momentum imaging measurements of anions generated via dissociative electron attachment to gaseous formamide. From the momentum images, we analyze the angular and kinetic energy distributions for NH$$_2^{-}$$, O$$^{-}$$, and H$$^{-}$$ fragments and discuss the possible electron attachment and dissociation mechanisms for multiple resonances for two ranges of incident electron energies, from 5.3~eV to 6.8~eV, and from 10.0~eV to 11.5~eV. {\it Ab initio} theoretical results for the angular distributions of the NH$$_2^{-}$$ anion for $$\sim$$6~eV incident electrons, when compared with the experimental results, strongly suggest that one of the two resonances producing this fragment is a $^2$$A$$''$ Feshbach resonance.

Authors:
ORCiD logo; ; ; ; ; ; ; ORCiD logo;
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES), Chemical Sciences, Geosciences & Biosciences Division
OSTI Identifier:
2325261
Alternate Identifier(s):
OSTI ID: 1735557
Grant/Contract Number:  
AC02-05CH11231; SC0014664
Resource Type:
Published Article
Journal Name:
Physical Review Research
Additional Journal Information:
Journal Name: Physical Review Research Journal Volume: 3 Journal Issue: 1; Journal ID: ISSN 2643-1564
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; Electron & positron scattering; Electronic excitation & ionization

Citation Formats

Panelli, Guglielmo, Moradmand, Ali, Griffin, Brandon, Swanson, Kyle, Weber, Thorsten, Rescigno, Thomas N., McCurdy, C. William, Slaughter, Daniel S., and Williams, Joshua B. Investigating resonant low-energy electron attachment to formamide: Dynamics of model peptide bond dissociation and other fragmentation channels. United States: N. p., 2021. Web. doi:10.1103/PhysRevResearch.3.013082.
Panelli, Guglielmo, Moradmand, Ali, Griffin, Brandon, Swanson, Kyle, Weber, Thorsten, Rescigno, Thomas N., McCurdy, C. William, Slaughter, Daniel S., & Williams, Joshua B. Investigating resonant low-energy electron attachment to formamide: Dynamics of model peptide bond dissociation and other fragmentation channels. United States. https://doi.org/10.1103/PhysRevResearch.3.013082
Panelli, Guglielmo, Moradmand, Ali, Griffin, Brandon, Swanson, Kyle, Weber, Thorsten, Rescigno, Thomas N., McCurdy, C. William, Slaughter, Daniel S., and Williams, Joshua B. Wed . "Investigating resonant low-energy electron attachment to formamide: Dynamics of model peptide bond dissociation and other fragmentation channels". United States. https://doi.org/10.1103/PhysRevResearch.3.013082.
@article{osti_2325261,
title = {Investigating resonant low-energy electron attachment to formamide: Dynamics of model peptide bond dissociation and other fragmentation channels},
author = {Panelli, Guglielmo and Moradmand, Ali and Griffin, Brandon and Swanson, Kyle and Weber, Thorsten and Rescigno, Thomas N. and McCurdy, C. William and Slaughter, Daniel S. and Williams, Joshua B.},
abstractNote = {We report experimental results on three-dimensional momentum imaging measurements of anions generated via dissociative electron attachment to gaseous formamide. From the momentum images, we analyze the angular and kinetic energy distributions for NH$_2^{-}$, O$^{-}$, and H$^{-}$ fragments and discuss the possible electron attachment and dissociation mechanisms for multiple resonances for two ranges of incident electron energies, from 5.3~eV to 6.8~eV, and from 10.0~eV to 11.5~eV. {\it Ab initio} theoretical results for the angular distributions of the NH$_2^{-}$ anion for $\sim$6~eV incident electrons, when compared with the experimental results, strongly suggest that one of the two resonances producing this fragment is a $^2$A$''$ Feshbach resonance.},
doi = {10.1103/PhysRevResearch.3.013082},
journal = {Physical Review Research},
number = 1,
volume = 3,
place = {United States},
year = {Wed Jan 27 00:00:00 EST 2021},
month = {Wed Jan 27 00:00:00 EST 2021}
}

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