Chemical reactivity from the vibrational ground-state level. The role of the tunneling path in the tautomerization of urea and derivatives

2020 ◽  
Vol 22 (43) ◽  
pp. 24951-24963
Author(s):  
Irea Mosquera-Lois ◽  
David Ferro-Costas ◽  
Antonio Fernández-Ramos
Keyword(s):  
Low Temperature ◽  
Ground State ◽  
Chemical Reactivity ◽  
State Level ◽  
Chemical Processes ◽  
Vibrational Ground State ◽  
Recent Developments ◽  
Ground State Level

Recent developments of low-temperature techniques are providing valuable knowledge about chemical processes that manifest in the quantum regimen.

scholarly journals Hyperfine level structure in nitrogen-vacancy centers near the ground-state level anticrossing

2019 ◽  
Vol 100 (7) ◽  
Author(s):  
Marcis Auzinsh ◽  
Andris Berzins ◽  
Dmitry Budker ◽  
Laima Busaite ◽  
Ruvin Ferber ◽  
...  
Keyword(s):  
Ground State ◽  
Level Structure ◽  
State Level ◽  
Nitrogen Vacancy ◽  
Nitrogen Vacancy Centers ◽  
Ground State Level

ABSORPTION SPECTRA OF C3 AND C3H2 FROM THE FLASH PHOTOLYSIS OF DIAZOPROPYNE

1967 ◽  
Vol 45 (12) ◽  
pp. 4103-4111 ◽  
Author(s):  
A. J. Merer
Keyword(s):  
Absorption Spectrum ◽  
Free Radical ◽  
Ground State ◽  
Time Delays ◽  
Flash Photolysis ◽  
State Level ◽  
Vibrational Structure ◽  
Absorption Bands ◽  
Text Component ◽  
Ground State Level

The flash photolysis of diazopropyne (HC2∙CHN2) provides a particularly strong absorption spectrum of the free C3 radical. About 40 μs after the photolysis flash, the appearance of the [Formula: see text] (4 050 Å) system of C3 is similar to that obtained in the flash photolysis of diazomethane by Gausset, Herzberg, Lagerqvist, and Rosen, though much more intense. The intensity of the spectrum has permitted a study of the l-type doubling effect in the ground-state level 6ν2, of which the [Formula: see text] component has been found to lie at 458.2 cm−1. At shorter time delays [Formula: see text] the spectrum is complicated by bands arising from the levels ν1″ (1 224.5 cm−1) and 2ν1″ (2 436.0 cm−1).Below 3 700 Å the C3 spectrum is overlapped by absorption bands belonging to a new free radical, which has been identified from the intensity alternation in the rotational structure as the HCCCH radical. The vibrational structure of this system is exceptionally complex, and analysis has not been possible. The bands extend to about 3 100 Å, but are predissociated below 3 450 Å.

scholarly journals Наблюдение когерентного пленения населенности в ансамблях NV-центров в алмазе в условиях антипересечения уровней основного состояния

2019 ◽  
Vol 127 (8) ◽  
pp. 260
Author(s):  
Р.А. Ахмеджанов ◽  
И.В. Зеленский ◽  
Л.А. Гущин ◽  
В.А. Низов ◽  
Н.А. Низов ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Ground State ◽  
State Level ◽  
Coherent Population Trapping ◽  
Crystal Axis ◽  
Trapping Effect ◽  
Population Trapping ◽  
Ground State Level ◽  
Nv Centers

We realize the coherent population trapping effect in ensembles of diamond NV-centers in the ground state level anticrossing regime when the sample is placed into a strong external magnetic field along the [111] crystal axis.

Visible Luminescence of Eu3+ Ions in Lithium Barium Borate Glass

2016 ◽  
Vol 702 ◽  
pp. 66-70
Author(s):  
Keerati Kirdsiri ◽  
Benchaphorn Damdee ◽  
Jakrapong Kaewkhao
Keyword(s):  
Excited States ◽  
Ground State ◽  
Room Temperature ◽  
State Level ◽  
Barium Borate ◽  
Absorption Bands ◽  
Visible Luminescence ◽  
Barium Borate Glass ◽  
Quench Method ◽  
Ground State Level

Europium doped lithium barium borate glasses were fabricated by conventional melt-quench method and were analyzed their physical, optical and luminescence properties through absorption, excitation, emission and decay analysis at room temperature. The experimental data revealed that the five discrete absorption bands peaking at 393, 464, 532, 2032 and 2212 nm due to the transitions from 7F0 ground state level to various excited states of Eu3+ ions. The luminescence of Eu3+ in visible bands were observed under 394 nm pumping.

scholarly journals Ground-state level spin systems within Bernasconi model

2017 ◽  
Vol 161 ◽  
pp. 02013
Author(s):  
A.N. Leukhin ◽  
V.I. Bezrodnyi ◽  
A.A. Voronin ◽  
N.A. Kokovikhina
Keyword(s):  
Ground State ◽  
State Level ◽  
Spin Systems ◽  
Ground State Level
Sign in / Sign up

Export Citation Format

Share Document