Zobrazeno 1 - 10
of 87
pro vyhledávání: '"R. K. Gartia"'
Autor:
Moirangthem Nara Singh, R. K. Gartia
Publikováno v:
ADVANCED MATERIALS AND RADIATION PHYSICS (AMRP-2020): 5th National e-Conference on Advanced Materials and Radiation Physics.
In this paper we present the physical basis of persistence luminescence in CaAl2O4 lattice based afterglows phosphors. We demonstrate that the inherent presence of a set of three discrete trap levels at 0.65±0.01 eV, 0.70±0.01 eV and 0.77 ± 0.00 e
Publikováno v:
AIP Conference Proceedings.
Autor:
Ngangbam Chandrasekhar, R. K. Gartia
Publikováno v:
Journal of Alloys and Compounds. 745:773-778
Whenever one over simplifies a physical phenomenon or even any concept, misconceptions are bound to occur. This seems to be true in the case of use of thermoluminescence (TL) in the study of materials by non-specialists. The fact that most semiconduc
Autor:
R. K. Gartia, Moirangthem Nara Singh
Publikováno v:
Optik. 248:168048
Deconvolution of thermoluminescence(TL) curve has evolved as a subject of its own merit and has attained a mature state. Unfortunately, even with the availability of multiple methods id analysis and numerous deconvolution software, the pitfalls are m
Autor:
R. K. Gartia, Ngangbam Chandrasekhar
Publikováno v:
Journal of Alloys and Compounds. 683:157-163
The physical basis of persistent luminescence in terms of the color of emission as well as the useful afterglow time is discussed for a commercial red-emitting Ca1−xSrxS:Eu phosphor. The discussion is based on the results of excitation/emission spe
Publikováno v:
AIP Conference Proceedings.
Autor:
R. K. Gartia, L. Lovedy Singh
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 346:45-52
The Wright Omega function has been employed in the simplification of the OSL differential equation, which may, in turn, be employed in the evaluation of OSL curves. The new equation will help in analyzing the zone between the First Order and the Seco
Autor:
R. K. Gartia
Publikováno v:
Defect and Diffusion Forum. 357:193-215
Thermoluminescence (TL) is basically a super-sensitive phenomenon exhibit ted practically by all semiconductors/ insulators upon suitable excitation. The occurrence of TL peaks during the thermal scan of a previously excited material gives rise to a
Autor:
R. K. Gartia, Ngangbam Chandrasekhar
Publikováno v:
Defect and Diffusion Forum. 357:171-191
Persistent luminescence as well as Thermoluminescence (TL), both the phenomena are nothing but long-period afterglow having lifetime (τ) in the broad range of few minutes to few days. Therefore, it is nothing but natural that all persistent luminesc
Autor:
R. K. Gartia, L. Lovedy Singh
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 319:39-43
A novel method of analyzing thermoluminescence TL glow curves is presented here. This method is based on the recently derived simplified OTOR equation. It employs the Hybrid Genetic Algorithm for the extraction of the TL parameters. This method has b