scholarly journals Electron-attachment rates for carbon-rich molecules in protoplanetary atmospheres: the role of chemical differences

2012 ◽  
Vol 428 (2) ◽  
pp. 1181-1184 ◽  
Author(s):  
F. Carelli ◽  
T. Grassi ◽  
F. Sebastianelli ◽  
F. A. Gianturco
Keyword(s):  
Electron Attachment

scholarly journals Electron Attachment to Cytosine: The Role of Water

2021 ◽  
Author(s):  
Pooja Verma ◽  
Debashree Ghosh ◽  
Achintya Kumar Dutta
Keyword(s):  
Electron Attachment

On the role of electron attachment in the breakdown strength of gaseous dielectrics

1981 ◽  
Vol 14 (10) ◽  
pp. 1889-1901 ◽  
Author(s):  
L G Christophorou ◽  
R A Mathis ◽  
D R James ◽  
D L McCorkle
Keyword(s):  
Breakdown Strength ◽  
Electron Attachment

Photoinduced dissociative electron attachment of CH3Br on Pt(111): The role of the local work function

1992 ◽  
Vol 96 (12) ◽  
pp. 9114-9121 ◽  
Author(s):  
V. A. Ukraintsev ◽  
T. J. Long ◽  
T. Gowl ◽  
I. Harrison
Keyword(s):  
Work Function ◽  
Electron Attachment ◽  
Dissociative Electron Attachment ◽  
Local Work

The role of dissociative electron attachment to metal halides in a low-pressure glow discharge

2010 ◽  
Vol 4 (1) ◽  
pp. 1-7 ◽  
Author(s):  
S. O. Adamson ◽  
M. A. Deminskii ◽  
A. V. Zaitsevskii ◽  
B. V. Potapkin ◽  
M. Ya. Tudorovskaya ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Electron Attachment ◽  
Low Pressure ◽  
Dissociative Electron Attachment ◽  
Metal Halides ◽  
Pressure Glow Discharge

scholarly journals The Role of Low-Energy Electron Interactions in cis-Pt(CO)2Br2 Fragmentation

2021 ◽  
Vol 22 (16) ◽  
pp. 8984
Author(s):  
Maicol Cipriani ◽  
Styrmir Svavarsson ◽  
Filipe Ferreira da Silva ◽  
Hang Lu ◽  
Lisa McElwee-White ◽  
...  
Keyword(s):  
Coordination Compound ◽  
Electron Attachment ◽  
High Energy ◽  
Low Energy ◽  
Carbonyl Complexes ◽  
Secondary Electrons ◽  
High Energy Radiation ◽  
Low Energy Electrons ◽  
In Cis

Platinum coordination complexes have found wide applications as chemotherapeutic anticancer drugs in synchronous combination with radiation (chemoradiation) as well as precursors in focused electron beam induced deposition (FEBID) for nano-scale fabrication. In both applications, low-energy electrons (LEE) play an important role with regard to the fragmentation pathways. In the former case, the high-energy radiation applied creates an abundance of reactive photo- and secondary electrons that determine the reaction paths of the respective radiation sensitizers. In the latter case, low-energy secondary electrons determine the deposition chemistry. In this contribution, we present a combined experimental and theoretical study on the role of LEE interactions in the fragmentation of the Pt(II) coordination compound cis-PtBr2(CO)2. We discuss our results in conjunction with the widely used cancer therapeutic Pt(II) coordination compound cis-Pt(NH3)2Cl2 (cisplatin) and the carbonyl analog Pt(CO)2Cl2, and we show that efficient CO loss through dissociative electron attachment dominates the reactivity of these carbonyl complexes with low-energy electrons, while halogen loss through DEA dominates the reactivity of cis-Pt(NH3)2Cl2.

scholarly journals Charging of mesospheric aerosol particles: the role of photodetachment and photoionization from meteoric smoke and ice particles

2009 ◽  
Vol 27 (6) ◽  
pp. 2417-2422 ◽  
Author(s):  
M. Rapp
Keyword(s):  
Electron Capture ◽  
Aerosol Particles ◽  
Pure Water ◽  
Electron Attachment ◽  
Water Ice ◽  
Ice Particles ◽  
Repeated Observation ◽  
Meteoric Smoke ◽  
Positively Charged

Abstract. Time constants for photodetachment, photoemission, and electron capture are considered for two classes of mesospheric aerosol particles, i.e., meteor smoke particles (MSPs) and pure water ice particles. Assuming that MSPs consist of metal oxides like Fe2O3 or SiO, we find that during daytime conditions photodetachment by solar photons is up to 4 orders of magnitude faster than electron attachment such that MSPs cannot be negatively charged in the presence of sunlight. Rather, even photoemission can compete with electron capture unless the electron density becomes very large (>>1000 cm−3) such that MSPs should either be positively charged or neutral in the case of large electron densities. For pure water ice particles, however, both photodetachment and photoemission are negligible due to the wavelength characteristics of its absorption cross section and because the flux of solar photons has already dropped significantly at such short wavelengths. This means that water ice particles should normally be negatively charged. Hence, our results can readily explain the repeated observation of the coexistence of positive and negative aerosol particles in the polar summer mesopause, i.e., small MSPs should be positively charged and ice particles should be negatively charged. These results have further important implications for our understanding of the nucleation of mesospheric ice particles as well as for the interpretation of incoherent scatter radar observations of MSPs.

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