Zobrazeno 1 - 10 of 14 pro vyhledávání: '"J. E. Espinosa"'
1
Characterizing a Mini Gamma Detector
Autor: J. E. Espinosa, Margarita Amaro Aranda, E. Marquez-Quintos, E. Moreno-Barbosa, R. Palomino Merino, Benito de Celis Alonso
Publikováno v: Journal of Nuclear Physics, Material Sciences, Radiation and Applications. 7:159-163
There are several types of gamma radiation detectors, which have different characteristics depending on its use. We designed and instrumented a gamma detector for low energies of a small and portable size to obtain spectrum from radioactive sources a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fd131e3be6c058ab12730371f28a701f
https://doi.org/10.15415/jnp.2020.72020
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2
Luminescent properties of a hybrid SiO2-PMMA matrix doped with terbium
Autor: J. De la Cruz, Enrique Soto, E. Moreno-Barbosa, R. Aceves Torres, J. J. Gervacio-Arciniega, R. Palomino Merino, P. Trejo-García, J. E. Espinosa
Publikováno v: Optical Materials. 87:42-47
Using the sol-gel technique a SiO2-PMMA hybrid matrix was synthesized by the simultaneous hydrolysis of tetraethyl orthosilicate (TEOS) and the polymerization of methyl methacrylate (MMA). The hybrid material was doped with terbium ions for it's lumi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::08d2b9d32596c7495412951582bdbe91
https://doi.org/10.1016/j.optmat.2018.06.007
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4
Thermoluminescent Characteristics of Li2B4O7 Doped with Mn2+ and Eu3+ Ions
Autor: R. Aceves, P. Trejo García, R. Palomino Merino, J. E. Espinosa, E. Cruz Zaragoza
Publikováno v: Journal of Nuclear Physics, Material Sciences, Radiation and Applications. 5:127-136
Analysis of thermoluminescent properties were made for two samples; Li2B4O7, Li2B4O7:Mn2+:Eu3+. These samples were prepared by melt quenching method. The glow curves of the samples show two broad peaks at 160o C and 245 oC, and a high peak at 130oC f
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::480290ee0a5577c40b0ef8c4dc89987e
https://doi.org/10.15415/jnp.2017.51012
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5
Study of the (Ca1–xSrx) RuO3 System with Nano-Crystals Prepared by the Solid-State Reaction Method
Autor: J. E. Espinosa, Elizabeth Chavira, R. Palomino-Merino, Ernesto E. Marinero, Valentin Garcia-Vazquez, Masaya Nishioka, Adolfo Quiroz
Publikováno v: Materials Sciences and Applications. :16-22
We present a study of their structure, morphology, electrical and magnetic properties on the (Ca1–xSrx) RuO3 system for x = 0.0, 0.07, 0.10, 0.15 and 1.0. The samples were prepared by the solidstate reaction method in air at ambient pressure and he
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::77b5525fee689c98664242156b6d472a
https://doi.org/10.4236/msa.2015.61003
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6
Luminescent Properties of Eu3+-Doped Hybrid SiO2-PMMA Material for Photonic Applications
Autor: Raul Aceves, Juan De la Cruz, J. E. Espinosa, E. Moreno-Barbosa, P. Trejo-García, R. Palomino-Merino, Oscar Portillo Moreno
Publikováno v: Micromachines
Volume 9
Issue 9
Micromachines, Vol 9, Iss 9, p 441 (2018)
Hybrid organic-inorganic materials are of great interest for various applications. Here, we report on the synthesis and optical characterization of silica-PMMA samples with different Eu3+ molar concentrations. The optical properties of this material
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48c308fd848dcce981eeef0265e570eb
https://doi.org/10.3390/mi9090441
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7
Two particles correlation in a one‐dimensional Fibonacci lattice within the generalized Hubbard model
Autor: J. E. Espinosa, A. Quiroz
Publikováno v: physica status solidi (c). 2:3641-3644
In this work we analyzed the ground-state symmetry for the cases of two particles in a linear Fibonacci chain, using the generalized Hubbard Hamiltonian and a previously developed real-space mapping method. The method is based on mapping the correlat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14ed1b0787fca9f8fe070616d11b121f
https://doi.org/10.1002/pssc.200461768
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8
[Untitled]
Autor: Oracio Navarro, J. E. Espinosa
Publikováno v: Journal of Low Temperature Physics. 117:307-311
The pairing problem of a three electrons system has been studied by using a real-space method and the generalized Hubbard Hamiltonian. This method includes the correlated hopping interactions as an extension of the previously proposed mapping method,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d6d371b7b79fb27e96f91f91321f370e
https://doi.org/10.1023/a:1022501229135
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10
Study of InxGa1-xN layers growth on GaN/Al2O3 by MOCVD at different pressures
Autor: C. Guarneros, J. E. Espinosa, V. M. Sánchez, U. López
Publikováno v: Instituto Politécnico Nacional
IPN
Redalyc-IPN
Benemérita Universidad Autónoma de Puebla
BUAP
Redalyc-BUAP
Superficies y vacío (México) Num.3 Vol.26
"We present the InxGa1-xN layers growth in a metalorganic chemical vapor deposition (MOCVD) system. First, we growth a GaN epitaxial layer on sapphire substrate, trimethylgallium (TMGa) and ammonia (NH3) are precursors of gallium and nitrogen, respec
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::4b0195cfe37bcfbd6f9977fce7bf7fb1
http://www.redalyc.org/articulo.oa?id=94229715006
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