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Browsing by Author "Domingo Beltran, Manuel"

Now showing items 1-20 of 20

A Fast, Direct Procedure to Estimate the Desorption Energy for Various Molecular Ices of Astrophysical Interest

Luna Molina, Ramón; Luna-Ferrándiz, Ramón; Millán Verdú, Carlos; Domingo Beltran, Manuel; Muñoz-Caro, Guillermo; Santonja Moltó, Mª Del Carmen; Satorre, M. Á. (American Astronomical Society, 2017-06-14)

[EN] Desorption energy is a relevant parameter when studying the desorption kinetics of an ice under astrophysical conditions. Values reported are generally calculated using at least a desorption experiment and a further ...
An experimental test for effective medium approximations (EMAs) Porosity determination for ices of astrophysical interest

Millán Verdú, Carlos; Santonja Moltó, Mª Del Carmen; Domingo Beltran, Manuel; Luna Molina, Ramón; Satorre, M. Á. (EDP Sciences, 2019)

[EN] Aims. The effective medium approximations (EMAs), or the Lorentz-Lorenz, Maxwell-Garnett, and Bruggeman models, largely used to obtain optical properties and porosities of pure and ice mixtures, have been experimentally ...
Caracterización de hielos de interés astrofísico

Luna Molina, Ramón; Satorre, M. Á.; Domingo Beltran, Manuel; Millán Verdú, Carlos; Santonja Moltó, Mª del Carmen; Blanes Nadal, Georgina (Compobell, S.L., 2013-11-12)

[ES] El objetivo del presente trabajo es mostrar el equipamiento experimental que dispone nuestro grupo de investigación sobre hielos de interés astrofísico en Alcoy. Dicho equipo experimental está diseñado para intentar ...
Densities and refractive indices of ethane and ethylene at astrophysically relevant temperatures

Satorre, M. Á.; Millán Verdú, Carlos; Molpeceres, Germán; Luna Molina, Ramón; Maté, Belén; Domingo Beltran, Manuel; Escribano, Rafael; Santonja Moltó, Mª Del Carmen (Elsevier, 2017)

[EN] We report the density and refractive index, at 633 nm, of ethane and ethylene ices at temperatures from 13 to 65 K, measured by double laser interferometry and a cryogenic quartz crystal microbalance in a high vacuum ...
Densities, infrared band strengths, and optical constants of solid methanol

Luna Molina, Ramón; Molpeceres, Germán; Ortigoso, Juan; Satorre, M. Á.; Domingo Beltran, Manuel; Maté, Belén (EDP Sciences, 2018-09)

[EN] Contact. The increasing capabilities of space missions like the James Webb Space Telescope or ground-based observatories like the European Extremely Large Telescope demand high quality laboratory data of species in ...
Density and refractive index of binary CH4, N2 and CO2 ice mixtures

Luna Molina, Ramón; Satorre Aznar, Miguel Ángel; Domingo Beltran, Manuel; Millán Verdú, Carlos; Santonja Moltó, Mª del Carmen (Elsevier, 2012)

In this work we present the results of a series of laboratory experiments performed to obtain the density and the real part of the refractive index of binary mixtures of ices of astrophysical interest. Densities of CO 2:CH ...
Density and Refractive Index of Carbon Monoxide Ice at Different Temperatures

Luna Molina, Ramón; Millán, Carlos; Domingo Beltran, Manuel; Santonja Moltó, Mª Del Carmen; Satorre, M. Á. (American Astronomical Society, 2022-08-01)

[EN] This paper is intended to study the density and the refractive index of the solid carbon monoxide in the interval 13-28 K to improve our understanding of the dynamics in the astrophysical environments where they are ...
Desviaciones de la idealidad del índice de refracción y densidad de mezclas de compuestos binarios en estado sólido

Luna Molina, Ramón; Satorre, M. Á.; Domingo Beltran, Manuel; Millán Verdú, Carlos; Santonja Moltó, Mª del Carmen (Compobell, S.L., 2013-11-12)

[ES] En este trabajo se presentan los resultados de experimentos de laboratorio enfocados a obtener la densidad y el índice de refracción (parte real) de mezclas de compuestos binarios en estado sólido. La densidad de las ...
Determinación del índice de refracción de películas delgadas crecidas en condiciones crioscópicas por medio de la medida de reflectancia a un ángulo de incidencia

Satorre, M. Á.; Luna Molina, Ramón; Santonja Moltó, Mª del Carmen; Domingo Beltran, Manuel; Millán Verdú, Carlos (Compobell, S.L., 2013-11-12)

En el presente trabajo se presenta un nuevo método de obtención de índices de refracción y espesores de películas delgadas, desarrollado por el grupo de astrofísica del Centro de Tecnologías Físicas: Acústica, Materiales ...
Diseño de un sistema de adquisición de datos integrado en un ordenador partiendo de un instrumento analógico clásico

Bosch Calvo, Miguel (Universitat Politècnica de València, 2017-06-30)

[ES] El trabajo realizado consiste en la digitalización de un instrumento analógico mediante la captación de una imagen del mismo con una cámara de vídeo. Dicha imagen será tratada para poder localizar el indicador de este ...
Double Laser for Depth Measurement of Thin Films of Ice

Domingo Beltran, Manuel; Luna Molina, Ramón; Satorre, M. Á.; Santonja Moltó, Mª del Carmen; Millán Verdú, Carlos (MDPI, 2015-10)

The use of thin films is extensive in both science and industry. We have created an experimental system that allows us to measure the thicknesses of thin films (with typical thicknesses of around 1 μm) in real time ...
Evaluación de la termografía infrarroja para la medida de la temperatura alcanzada por componentes electrónicos

Santonja Moltó, Mª Del Carmen; Satorre, M. Á.; Luna Molina, Ramón; Domingo Beltran, Manuel; Millán Verdú, Carlos (Compobell, 2021-07-15)

[ES] El estudio del calentamiento de componentes electrónicos y de las posibles soluciones para eliminar el calor generado, es fundamental para su buen funcionamiento. Las cámaras infrarrojas son una opción rápida para la ...
Experimental Measurement of Carbon Dioxide Polarizability in the Solid State

Domingo Beltran, Manuel; Luna Molina, Ramón; Satorre, M. Á.; Santonja Moltó, Mª del Carmen; Millán Verdú, Carlos (Springer-Verlag, 2015)

[EN] We have experimentally determined the polarizability of using the Lorentz-Lorenz equation by simultaneously measuring the density and the refractive index. The conditions were solid phase, mbar pressure, and temperature ...
Experimental study of the frequency factor in the Polanyi-Wigner equation: the case of C2H6

Luna Molina, Ramón; Millán Verdú, Carlos; Domingo Beltran, Manuel; Santonja Moltó, Mª del Carmen; Satorre, M. Á. (Elsevier, 2015-12)

The C2H6 molecule has been used to determine experimentally, for the first time, the frequency factor present in the Polanyi-Wigner equation and to study how temperature influences this magnitude for a zeroth order desorption. ...
Experimental Vapor Pressure Determination for C2H4, C2H6, CH3OH, CH4, CO, CO2, H2O, and N2 Molecules for Astrophysical Relevant Temperatures. Implications for the Presence of Volatiles in Kuiper Belt Objects and Trans-Neptunian Objects

Millán Verdú, Carlos; Luna Molina, Ramón; Domingo Beltran, Manuel; Santonja Moltó, Mª Del Carmen; Satorre, M. Á. (American Astronomical Society, 2024-08-01)

[EN] Vapor pressure is a relevant quantity that is necessary in order to improve the study of the atmosphere dynamics that take place within astrophysical scenarios. The aim of this study was to obtain the vapor pressure ...
Lorentz-Lorenz Coefficient of Ice Molecules of Astrophysical Interest: N2, CO2, NH3, CH4, CH3OH, C2H4, and C2H6

Domingo Beltran, Manuel; Luna Molina, Ramón; Satorre, M. Á.; Santonja Moltó, Mª Del Carmen; Millán Verdú, Carlos (American Astronomical Society, 2021-01)

[EN] This work calculates the Lorentz-Lorenz coefficient with the refractive index and density values of various molecules in their solid phase measured in our laboratory under astrophysical conditions. This was completed ...
New experimental sublimation energy measurements for some relevant astrophysical ices

Luna Molina, Ramón; Satorre Aznar, Miguel Ángel; Santonja Moltó, Mª del Carmen; Domingo Beltran, Manuel (EDP Sciences, 2014-06)

Context. The knowledge of the sublimation energy of ices allows us to better understand the dynamics between surfaces and atmospheres of different environments of astrophysical interest where ices are present. Aims. ...
Study of the frequency factor in the thermal desorption of astrophysical ice analogs: CH4, C2H4, C2H6, CH3OH, CO, CO2, H2O and N2

Luna Molina, Ramón; Domingo Beltran, Manuel; Millán Verdú, Carlos; Santonja Moltó, Mª Del Carmen; Satorre, M. Á. (Elsevier, 2018)

[EN] In this work the frequency factor and the influence of the temperature on this parameter, for zeroth order desorption processes, has been experimentally determined for eight molecules of astrophysical interest. In the ...
Thermal desorption of methanol in hot cores. Study with a quartz crystal microbalance

Luna Molina, Ramón; Satorre, M. Á.; Domingo Beltran, Manuel; Millán Verdú, Carlos; Luna-Ferrándiz, Ramón; Gisbert-Pérez, Georgina María; Santonja Moltó, Mª Del Carmen (Oxford University Press, 2018)

[EN] The desorption process of methanol in the hot cores of massive young stars is addressed in this work. The study of pure methanol ice and when it is mixed or layered with water allows a better understanding of the ...
Upgraded sublimation energy determination procedure for icy films

Luna Molina, Ramón; Millán Verdú, Carlos; Domingo Beltran, Manuel; Santonja Moltó, Mª del Carmen; Satorre Aznar, Miguel Ángel (Elsevier, 2012-06-20)

A method to determine the sublimation energy of a bulk ice in high vacuum systems, allowing other simultaneous analysis techniques, is presented. Variation in frequency of a quartz crystal microbalance, due to sublimating ...