Formation of a stable bivalent state of yb ions in na4y 6f22:Ce3+, yb3+ crystal under intense UV irradiation

The evolution dynamics of absorption spectra induced in samples of Na 4Y6F22:Ce3+, Yb3+ crystal by radiation resonant with 4f-5d transitions of Ce3+ ions was studied and analyzed. It was found that at least two types of color centers with different life times are induced in the studied crystal. It is established that the group of absorption bands in the UV spectral range that demonstrate long-term stability after excitation is caused by the 4f 13-4f 125d transitions of bivalent ytterbium ions. The sequence of processes that lead to the reduction of ytterbium ions from the trivalent to the bivalent state is proposed. © Pleiades Publishing, Ltd., 2011

Spectroelectrochemistry: ESR of Paramagnetic Intermediates in the Electron Transfer Series [Cr(bpy)<inf>3</inf>]ⁿ (n = 3+, 2+, 1+, 0, 1-)

© 2015 Elsevier Ltd. All rights reserved. A new method of cyclic voltammetry with simultaneous ESR spectra multiple recording (CV-MRESR) has been proposed and implemented. Along with cyclic voltammetry (CV) and electron spin resonance (ESR), the combined method involving cyclic voltammetry and ESR (CV-ESR) has been used for the study of electron transfer in a series of complexes [Cr(bpy)3]n (n = 3+, 2+, 1+, 0, 1-)

Rapid method of recording transmission spectra of pumped active media samples

The application of the phenomenon of a laser-induced spark for spectroscopy is described. The characteristics of such a light source, its advantages are given. Examples of using the source in real experiments on measuring absorption from the excited state of various materials are given

Formation of a stable bivalent state of yb ions in na4y 6f22:Ce3+, yb3+ crystal under intense UV irradiation

The evolution dynamics of absorption spectra induced in samples of Na 4Y6F22:Ce3+, Yb3+ crystal by radiation resonant with 4f-5d transitions of Ce3+ ions was studied and analyzed. It was found that at least two types of color centers with different life times are induced in the studied crystal. It is established that the group of absorption bands in the UV spectral range that demonstrate long-term stability after excitation is caused by the 4f 13-4f 125d transitions of bivalent ytterbium ions. The sequence of processes that lead to the reduction of ytterbium ions from the trivalent to the bivalent state is proposed. © Pleiades Publishing, Ltd., 2011

Rapid method of recording transmission spectra of pumped active media samples

The application of the phenomenon of a laser-induced spark for spectroscopy is described. The characteristics of such a light source, its advantages are given. Examples of using the source in real experiments on measuring absorption from the excited state of various materials are given

Formation of a stable bivalent state of yb ions in na4y 6f22:Ce3+, yb3+ crystal under intense UV irradiation

The evolution dynamics of absorption spectra induced in samples of Na 4Y6F22:Ce3+, Yb3+ crystal by radiation resonant with 4f-5d transitions of Ce3+ ions was studied and analyzed. It was found that at least two types of color centers with different life times are induced in the studied crystal. It is established that the group of absorption bands in the UV spectral range that demonstrate long-term stability after excitation is caused by the 4f 13-4f 125d transitions of bivalent ytterbium ions. The sequence of processes that lead to the reduction of ytterbium ions from the trivalent to the bivalent state is proposed. © Pleiades Publishing, Ltd., 2011

Formation of a stable bivalent state of yb ions in na4y 6f22:Ce3+, yb3+ crystal under intense UV irradiation

The evolution dynamics of absorption spectra induced in samples of Na 4Y6F22:Ce3+, Yb3+ crystal by radiation resonant with 4f-5d transitions of Ce3+ ions was studied and analyzed. It was found that at least two types of color centers with different life times are induced in the studied crystal. It is established that the group of absorption bands in the UV spectral range that demonstrate long-term stability after excitation is caused by the 4f 13-4f 125d transitions of bivalent ytterbium ions. The sequence of processes that lead to the reduction of ytterbium ions from the trivalent to the bivalent state is proposed. © Pleiades Publishing, Ltd., 2011

Spectroelectrochemistry: ESR of Paramagnetic Intermediates in the Electron Transfer Series [Cr(bpy)<inf>3</inf>]ⁿ (n = 3+, 2+, 1+, 0, 1-)

© 2015 Elsevier Ltd. All rights reserved. A new method of cyclic voltammetry with simultaneous ESR spectra multiple recording (CV-MRESR) has been proposed and implemented. Along with cyclic voltammetry (CV) and electron spin resonance (ESR), the combined method involving cyclic voltammetry and ESR (CV-ESR) has been used for the study of electron transfer in a series of complexes [Cr(bpy)3]n (n = 3+, 2+, 1+, 0, 1-)

Spectroelectrochemistry: ESR of Paramagnetic Intermediates in the Electron Transfer Series [Cr(bpy)<inf>3</inf>]ⁿ (n = 3+, 2+, 1+, 0, 1-)

© 2015 Elsevier Ltd. All rights reserved. A new method of cyclic voltammetry with simultaneous ESR spectra multiple recording (CV-MRESR) has been proposed and implemented. Along with cyclic voltammetry (CV) and electron spin resonance (ESR), the combined method involving cyclic voltammetry and ESR (CV-ESR) has been used for the study of electron transfer in a series of complexes [Cr(bpy)3]n (n = 3+, 2+, 1+, 0, 1-)

Spectroelectrochemistry: ESR of Paramagnetic Intermediates in the Electron Transfer Series [Cr(bpy)<inf>3</inf>]ⁿ (n = 3+, 2+, 1+, 0, 1-)

© 2015 Elsevier Ltd. All rights reserved. A new method of cyclic voltammetry with simultaneous ESR spectra multiple recording (CV-MRESR) has been proposed and implemented. Along with cyclic voltammetry (CV) and electron spin resonance (ESR), the combined method involving cyclic voltammetry and ESR (CV-ESR) has been used for the study of electron transfer in a series of complexes [Cr(bpy)3]n (n = 3+, 2+, 1+, 0, 1-)