Zobrazeno 1 - 10
of 16
pro vyhledávání: '"L. V. Bershov"'
Publikováno v:
International Kimberlite Conference Extended Abstracts: 1998.
Publikováno v:
Physics and Chemistry of Minerals. 17:24-26
The electron spin-lattice relaxation time (T1e) of the paramagnetic radical-ion center SO3−in a naturally occurring single crystal of barite was studied in the temperature range 10–300 K by the pulse saturation recovery technique. The changes in
Publikováno v:
Physics and Chemistry of Minerals. 20
Electron paramagnetic resonance (EPR) spectra of CO33−molecule-ions stabilized by Sc3+ in natural calcite were identified and studied at X-band frequencies and room temperature. The principal values of the g-tensor (gx′x′= 1.9997, gy′y′ = 2
Publikováno v:
Physics and Chemistry of Minerals. 9:95-101
The electron paramagnetic resonance (EPR) spectrum of Cr3+ in synthetic crystals of forsterite consists primarily of lines of Cr3+ “isolated” at the M1 and M2 positions in a “perfect” crystal environment without local charge compensation. In
Publikováno v:
Physics and Chemistry of Minerals. 10:21-26
Electron paramagnetic resonance (EPR) measurements of natural anhydrite CaSO4, celestite SrSO4 and barite BaSO4 have revealed the presence of PO 3 2− and SO 3 − radicals. Hyperfine structure from33S has been detected and measured for the first ti
Autor:
L. V. Bershov, A. S. Marfunin
Publikováno v:
International Geology Review. 24:359-362
Electron nuclear double resonance is used to identify the organosilicon polysilane radical in bitumens from Devonian limestones in the central Urals. The radical is extremely stable and breaks down only above about 525/sup 0/C.The singlet spectra of
Autor:
L. V. Bershov
Publikováno v:
Theoretical and Experimental Chemistry. 6:326-329
Autor:
A. S. Marfunin, L. V. Bershov
Publikováno v:
International Geology Review. 9:30-38
Elements such as titanium, vanadium, zirconium, niobium, hafnium, tantalum, and to some extent molybdenum and tungsten cannot be seen in their common valency states by the electron paramagnetic method; all other valency states of these elements are p
Publikováno v:
Physica Status Solidi (b). 44:505-512
EPR has been used to study yttrium-stabilised electron-hole centres of natural anhydrites. Geometrical models have been constructed by measuring the main directions of the tensors of the spectroscopic constants accurately and by correlating them with
Publikováno v:
Physica Status Solidi (b). 46:745-752
For the first time, an EPR spectrum of Mo3+ ions in yttrium-aluminium garnet has been obtained. The ions isomorphously replace Al3+ ions in the trigonally distorted oxygen octahedra of the garnet. The spectrum may be described by an axial spin-Hamilt