Noble gas matrix effects on the symmetric stretching transition structure of the XNgY noble gas molecules: Theoretical understanding the noble gas matrix stabilizing effects

2014 ◽  
Vol 1028 ◽  
pp. 46-59 ◽  
Author(s):  
Guoqun Liu ◽  
Wangxi Zhang ◽  
Xianxi Zhang ◽  
Tao He ◽  
Jianbo Cheng
Keyword(s):  
Matrix Effects ◽  
Noble Gas ◽  
Transition Structure ◽  
Theoretical Understanding ◽  
Gas Molecules

Noble gas matrix effects on the equilibrium and transition structures of noble gas molecules: A theoretical study

2012 ◽  
Vol 993 ◽  
pp. 118-124 ◽  
Author(s):  
Guoqun Liu ◽  
Yanli Zhang ◽  
Zhixin Wang ◽  
Yanzhi Wang ◽  
Xianxi Zhang ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Matrix Effects ◽  
Noble Gas ◽  
Transition Structures ◽  
Gas Molecules

Theoretical prediction of new noble-gas molecules FNgBNR (Ng = Ar, Kr, and Xe; R = H, CH3, CCH, CHCH2, F, and OH)

2013 ◽  
Vol 15 (24) ◽  
pp. 9701 ◽  
Author(s):  
Jien-Lian Chen ◽  
Chang-Yu Yang ◽  
Hsiao-Jing Lin ◽  
Wei-Ping Hu
Keyword(s):  
Theoretical Prediction ◽  
Noble Gas ◽  
Gas Molecules

scholarly journals Emission of Noble Gases Binary Mixtures under Excitation by the Products of the 6Li (n, α)3 H Nuclear Reaction

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Kuanysh Samarkhanov ◽  
Mendykhan Khasenov ◽  
Erlan Batyrbekov ◽  
Inesh Kenzhina ◽  
Yerzhan Sapatayev ◽  
...  
Keyword(s):  
Nuclear Reaction ◽  
Nuclear Energy ◽  
Alkali Metals ◽  
Nuclear Reactor ◽  
Noble Gases ◽  
Noble Gas ◽  
Direct Conversion ◽  
Reaction Products ◽  
Gas Molecules ◽  
Sodium And Potassium

The luminescence of Kr-Xe, Ar-Kr, and Ar-Xe mixtures was studied in the spectral range 300–970 nm when excited by 6Li (n, α)3 H nuclear reaction products in the core of a nuclear reactor. Lithium was deposited on walls of experimental cell in the form of a capillary-porous structure, which made it possible to measure up to a temperature of 730 K. The temperature dependence of the radiation intensity of noble gas atoms, alkali metals, and heteronuclear ionic noble gas molecules was studied. Also, as in the case of single-component gases, the appearance of lithium lines and impurities of sodium and potassium is associated with vaporization during the release of nuclear reaction products from the lithium layer. The excitation of lithium atoms occurs mainly as a result of the Penning process of lithium atoms on noble gas atoms in the 1s states and subsequent ion-molecular reactions. Simultaneous radiation at transitions of atoms of noble gases and lithium, heteronuclear ion molecules of noble gases allows us to increase the efficiency of direct conversion of nuclear energy into light.

Radiation-induced chemistry in the C2H2–H2O system at cryogenic temperatures: a matrix isolation study

2019 ◽  
Author(s):  
Pavel V Zasimov ◽  
Sergey V Ryazantsev ◽  
Daniil A Tyurin ◽  
Vladimir I Feldman
Keyword(s):  
Molecular Level ◽  
Matrix Effects ◽  
Noble Gas ◽  
Matrix Isolation ◽  
Isolation Technique ◽  
X Ray ◽  
Mechanistic Insight ◽  
Radiation Induced ◽  
Temperature Radiation ◽  
Reaction Routes

Abstract Investigations of the low-temperature radiation-induced transformations in the C2H2–H2O system are relevant to the chemistry occurring in interstellar and cometary ices. In this work we applied a matrix isolation technique to study the radiation-driven evolution of this system at molecular level in order to get new mechanistic insight. The 1:1 C2H2∙∙∙H2O complexes were prepared in various solid noble-gas matrices (Ar, Kr, Xe) and these icy matrices were subjected to X-ray irradiation at 5 K. Decomposition of initial complex and formation of products were monitored by FTIR spectroscopy. It was found that complexation with H2O resulted in significant enhancement of the radiolytic decay of C2H2 molecules and provided new channels for its radiation-induced transformations. Ketene (both isolated H2CCO and in the form of H2CCO–H2 pair), ketenyl radical (HCCO), carbon monoxide (CO) and methane (CH4) were observed as main products of the C2H2∙∙∙H2O radiolysis. In addition, vinyl alcohol (CH2CHOH) was detected in an Ar matrix. The mechanistic interpretation (reaction routes leading to formation of these products) is discussed on the basis of consideration of kinetic dependencies and matrix effects. Conversion of C2H2∙∙∙H2O to CH4 is a prominent example of water-mediated cleavage of the C≡C triple bond, which may occur under prolonged irradiation in rigid media. Possible astrochemical implications of the obtained results are highlighted.

scholarly journals Formation of Potential Interstellar Noble Gas Molecules in Gas and Adsorbed Phases

ACS Omega ◽  
2016 ◽  
Vol 1 (5) ◽  
pp. 765-772 ◽  
Author(s):  
Gerald T. Filipek ◽  
Ryan C. Fortenberry
Keyword(s):  
Noble Gas ◽  
Gas Molecules

Stability analysis of the neutral noble gas molecules FNgX and their anions FNgX−(Ng = He, Ar, Kr; X = O, S)

2009 ◽  
Vol 109 (4) ◽  
pp. 782-789 ◽  
Author(s):  
Yun Li ◽  
Hongqi Ai ◽  
Zhongnan Qi ◽  
Wei He ◽  
Liang Zhang
Keyword(s):  
Stability Analysis ◽  
Noble Gas ◽  
Gas Molecules

A Commentary on Recent Developments in X-RAY Detectors and Ancillary Instrumentation and Data Extraction Algorithms

1990 ◽  
Vol 48 (2) ◽  
pp. 106-107
Author(s):  
Charles E. Fiori ◽  
Carol R. Swyt
Keyword(s):  
Electron Microscope ◽  
Matrix Effects ◽  
Data Extraction ◽  
Quantitative Information ◽  
Scanning Transmission Electron Microscope ◽  
Theoretical Understanding ◽  
X Ray ◽  
Scanning Transmission ◽  
Recent Developments ◽  
Instrumental Development

When a lithium-drifted silicon, Si(Li), energy dispersive X-ray detector is attached to a scanning electron microscope or a scanning transmission electron microscope, it becomes possible to perform an assay of the elemental composition of a localized region of a specimen. This capability has existed now for almost 20 years. During this time, the quality of the analytical results has slowly improved with the availability of better instrumentation and increased understanding of the physical basis of measurement and matrix effects. During the last few years, the pace in both instrumental development and theoretical understanding has picked up dramatically. What seemed like a maturing and ever more mundane field has now been reinvigorated. We will catalog here and comment on several of the developments which have occurred in x-ray detectors and in the hardware and software used to process the resulting x-ray signals into quantitative information.Although the Si(Li) x-ray spectrometer has dominated the field of x-ray microanalysis for many years, recent developments in intrinsic germanium (IG) detectors have produced spectrometers which, in several important characteristics, rival or exceed those of the Si(Li) spectrometer.

Absorption studies of excimer transitions in Cs-noble-gas and Rb-noble-gas molecules

1976 ◽  
Vol 14 (1) ◽  
pp. 349-358 ◽  
Author(s):  
G. Moe ◽  
A. C. Tam ◽  
W. Happer
Keyword(s):  
Noble Gas ◽  
Absorption Studies ◽  
Gas Molecules
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