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

Investigating resonant low-energy electron attachment to formamide: Dynamics of model peptide bond dissociation and other fragmentation channels
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研究甲酰胺的共振低能电子附着:模型肽键解离和其他碎片通道的动力学

DOI:
10.1103/physrevresearch.3.013082
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发表时间:
2021
影响因子:
4.2
通讯作者:
Williams, Joshua B.
Williams, Joshua B.
中科院分区:
--
文献类型:
--
作者:
Panelli, Guglielmo;Moradmand, Ali;Griffin, Brandon;Swanson, Kyle;Weber, Thorsten;Rescigno, Thomas N.;McCurdy, C. William;Slaughter, Daniel S.;Williams, Joshua B.

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我们报告了通过解离电子附着到气态甲酰胺产生的阴离子的三维动量成像测量的实验结果。从动量图像中,我们分析了、、和碎片的角和动能分布,并讨论了在5.3 ~ 6.8 eV和10.0 ~ 11.5 eV两个入射电子能量范围内多重共振的可能的电子附着和解离机制。与实验结果相比,ev入射电子阴离子角分布的初始理论结果强烈表明,产生该片段的两个共振之一是aFeshbach共振。
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,, andfragments and discuss the possible electron attachment and dissociation mechanisms for multiple resonances for two ranges of incident electron energies, from 5.3 to 6.8 eV and from 10.0 to 11.5 eV.Ab initiotheoretical results for the angular distributions of theanion for-eV incident electrons, when compared with the experimental results, strongly suggest that one of the two resonances producing this fragment is aFeshbach resonance.
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