Ivan O. Antonov
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View article: Experimental Capabilities of The Laboratory Apparatus for Simulation of Solid-state Astrochemical Reactions
Experimental Capabilities of The Laboratory Apparatus for Simulation of Solid-state Astrochemical Reactions Open
Formation of complex organic molecules (COM) in the interstellar medium is a fundamental scientific problem, the solution of which requires an integrated interdisciplinary approach based on a combination of laboratory experiments, theoreti…
View article: Processing of methane and acetylene ices by galactic cosmic rays and implications to the color diversity of Kuiper Belt objects
Processing of methane and acetylene ices by galactic cosmic rays and implications to the color diversity of Kuiper Belt objects Open
Kuiper Belt objects exhibit a wider color range than any other solar system population. The origin of this color diversity is unknown, but likely the result of the prolonged irradiation of organic materials by galactic cosmic rays (GCRs). …
View article: Complex Reactive Acids from Methanol and Carbon Dioxide Ice: Glycolic Acid (HOCH<sub>2</sub>COOH) and Carbonic Acid Monomethyl Ester (CH<sub>3</sub>OCOOH)
Complex Reactive Acids from Methanol and Carbon Dioxide Ice: Glycolic Acid (HOCH<sub>2</sub>COOH) and Carbonic Acid Monomethyl Ester (CH<sub>3</sub>OCOOH) Open
The formation of complex organic molecules by simulated secondary electrons generated in the track of galactic cosmic rays was investigated in interstellar ice analogs composed of methanol and carbon dioxide. The processed ices were subjec…
View article: Efficiency of financial management of energy companies as a component of ensuring the financial stability of the industry
Efficiency of financial management of energy companies as a component of ensuring the financial stability of the industry Open
The management of financial resources of energy companies is one of the key aspects that ensure the efficiency of such companies, as a result of which the energy industry in the Russian Federation is more sustainable. The author analyzes t…
View article: Features of Molecular Structure Beneficial for Optical Pumping
Features of Molecular Structure Beneficial for Optical Pumping Open
Fast and efficient state preparation of molecules can be accomplished by optical pumping. Molecular structure that most obviously facilitates cycling involves a strong electronic transition, with favorable vibrational branching (diagonal F…
View article: Dramatic Conformer-Dependent Reactivity of the Acetaldehyde Oxide Criegee Intermediate with Dimethylamine <i>Via</i> a 1,2-Insertion Mechanism
Dramatic Conformer-Dependent Reactivity of the Acetaldehyde Oxide Criegee Intermediate with Dimethylamine <i>Via</i> a 1,2-Insertion Mechanism Open
The reactivity of carbonyl oxides has previously been shown to exhibit strong conformer and substituent dependencies. Through a combination of synchrotron-multiplexed photoionization mass spectrometry experiments (298 K and 4 Torr) and hig…
View article: Precisely spun super rotors
Precisely spun super rotors Open
Improved optical control of molecular quantum states promises new applications including chemistry in the quantum regime, precision tests of fundamental physics, and quantum information processing. While much work has sought to prepare gro…
View article: Cooling of a Zero-Nuclear-Spin Molecular Ion to a Selected Rotational State
Cooling of a Zero-Nuclear-Spin Molecular Ion to a Selected Rotational State Open
We demonstrate rotational cooling of the silicon monoxide cation via optical pumping by a spectrally filtered broadband laser. Compared with diatomic hydrides, SiO^{+} is more challenging to cool because of its smaller rotational interval.…
View article: Sensitive Mass Spectrometer for Time-Resolved Gas-Phase Chemistry Studies at High Pressures
Sensitive Mass Spectrometer for Time-Resolved Gas-Phase Chemistry Studies at High Pressures Open
We report a new experimental apparatus for direct time-resolved probing of high-pressure gas-phase chemical reactions by photoionization mass spectrometry. The apparatus uses a laser photolysis flow reactor, capable of operating at P = 0.3…
View article: To Boldly Look Where No One Has Looked Before: Identifying the Primary Photoproducts of Acetylacetone
To Boldly Look Where No One Has Looked Before: Identifying the Primary Photoproducts of Acetylacetone Open
We investigate the gas-phase photochemistry of the enolone tautomer of acetylacetone (pentane-2,4-dione) following S2(ππ*) ← S0 excitation at λ = 266 and 248 nm, using three complementary time-resolved spectroscopic methods. Contrary to ea…
View article: Experimental and computational studies of Criegee intermediate reactions with NH<sub>3</sub>and CH<sub>3</sub>NH<sub>2</sub>
Experimental and computational studies of Criegee intermediate reactions with NH<sub>3</sub>and CH<sub>3</sub>NH<sub>2</sub> Open
The significance of removal of atmospheric ammonia and amines by reaction with Criegee intermediates is assessed by kinetic studies.
View article: CHARACTERIZING MOLECULAR IONS FOR LASER CONTROL
CHARACTERIZING MOLECULAR IONS FOR LASER CONTROL Open
Variation of fundamental constants would indicate physics beyond the Standard Model. Astronomical evidence and proposed theoretical models suggest a possible variation in the proton to electron mass ratio ($\\mu$). Detection of $\\mu$ vari…
View article: SPECTOSCOPY OF SiO AND SiO+ IN SUPPORT OF ULTACOLD MOLECULE STUDIES
SPECTOSCOPY OF SiO AND SiO+ IN SUPPORT OF ULTACOLD MOLECULE STUDIES Open
Our group has been studying the reactions of hydrogen atoms (H atoms) with various molecules (NO, N$_{2}$O, CH$_{3}$OH) in solid hydrogen for the last several years.\\footnote{F.M. Mutunga, S.E. Follett, D.T. Anderson, \\textit{J. Chem. Ph…
View article: Products of Criegee intermediate reactions with NO<sub>2</sub>: experimental measurements and tropospheric implications
Products of Criegee intermediate reactions with NO<sub>2</sub>: experimental measurements and tropospheric implications Open
The reactions of Criegee intermediates with NO2 have been proposed as a potentially significant source of the important nighttime oxidant NO3, particularly in urban environments where concentrations of ozone, alkenes and NOx are high. Howe…
View article: Pressure-Dependent Competition among Reaction Pathways from First- and Second-O<sub>2</sub> Additions in the Low-Temperature Oxidation of Tetrahydrofuran
Pressure-Dependent Competition among Reaction Pathways from First- and Second-O<sub>2</sub> Additions in the Low-Temperature Oxidation of Tetrahydrofuran Open
We report a combined experimental and quantum chemistry study of the initial reactions in low-temperature oxidation of tetrahydrofuran (THF). Using synchrotron-based time-resolved VUV photoionization mass spectrometry, we probe numerous tr…