Search Results - "Seperuelo Duarte, E"

Decomposition of the CO stretching vibration band of laboratory H2O–CO ices irradiated by heavy ions by Seperuelo Duarte, E, de Barros, A L F, da Silveira, E F, Domaracka, A, Boduch, P, Rothard, H

“…ABSTRACT H2O and CO molecules are the main constituents of the interstellar dust grain ice mantles. Infrared spectra of the ices in line of sights of young…”
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Chemical reactions in H2O:CO interstellar ice analogues promoted by energetic heavy-ion irradiation by de Barros, A L F, Mejía, C, Seperuelo Duarte, E, Domaracka, A, Boduch, P, Rothard, H, da Silveira, E F

“…ABSTRACT H2O:CO, at concentrations of (3:2) and (10:1), was condensed on CsI substrate at 15 K and irradiated with 46-MeV 58Ni11 + ion beam. Radiolysis induced…”
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Compaction of porous ices rich in water by swift heavy ions by Mejía, C., de Barros, A.L.F., Seperuelo Duarte, E., da Silveira, E.F., Dartois, E., Domaracka, A., Rothard, H., Boduch, P.

“…•We irradiated porous ices with heavy ions and monitored compaction by FTIR.•The OH dangling bonds decrease exponentially with projectile fluence.•The…”
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The Moon, a Disk or a Sphere? by Seperuelo Duarte, E, Mota, A. T, de Carvalho, J. R, Xavier, R. C, Souza, P. V. S

“…In this paper, we present a physical modeling activity whose objective is to allow students to determine the differences between a disk and a sphere using pure…”
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CHEMICAL PROCESSING OF PURE AMMONIA AND AMMONIA-WATER ICES INDUCED BY HEAVY IONS by Bordalo, V, da Silveira, E F, Lv, X Y, DOMARACKA, A, ROTHARD, H, DUARTE, E SEPERUELO, BODUCH, P

“…Cosmic rays are possibly the main agents to prevent the freeze-out of molecules onto grain surfaces in cold dense clouds. Ammonia (NH sub(3)) is one of the…”
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Destruction of CO ice and formation of new molecules by irradiation with 28 keV O6+ ions by de Barros, A.L.F., Seperuelo Duarte, E., Farenzena, L. S., da Silveira, E.F., Domaracka, Alicja, Rothard, Hermann, Boduch, Philippe

“…The effect of solar wind on cometary ice was studied by using oxygen ions with energy near to that corresponding to their maximum abundance in space for…”
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Destruction of CO ice and formation of new molecules by irradiation with 28keV O6+ ions by de Barros, A.L.F., Seperuelo Duarte, E., Farenzena, L.S., da Silveira, E.F., Domaracka, A., Rothard, H., Boduch, P.

“…Research highlights ao Laboratory simulation of CO ice exposed to solar wind. ao Molecular destruction and formation yields measured for 28 keV oxygen beams…”
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Infrared study of astrophysical ice analogues irradiated by swift nickel ions by Domaracka, A., Seperuelo Duarte, E., Boduch, P., Rothard, H., Ramillon, J.M., Dartois, E., Pilling, S., Farenzena, L.S., da Silveira, E.F.

“…Water, carbon oxide, carbon dioxide, and ammonia ices are known to be pervasive constituents of the solar system and the interstellar medium. These ices and…”
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The Moon, a disk or a sphere? by Duarte, E. Seperuelo, Mota, A. T, de Carvalho, J. R, Xavier, R. C, Souza, P. V. S

“…In this paper, we present a physical modeling activity whose objective is to allow students to determine the differences between a disk and a sphere using pure…”
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Electronic Sputtering Analysis of Astrophysical Ices by Farenzena, L S, Iza, P, Martinez, R, Fernandez-Lima, F A, Duarte, ESeperuelo, Faraudo, G S, Ponciano, C R, Homem, MGP, Brito, ANaves, Wien, K, Silveira, E F

“…Experimental results on fast ion collision with icy surfaces having astrophysical interest are presented. 252Cf fission fragments projectiles were used to…”
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Radiolysis of H2O:CO2 ices by heavy energetic cosmic ray analogs by Pilling, S, Duarte, E. Seperuelo, Domaracka, A, Rothard, H, Boduch, P, da Silveira, E. F

“…An experimental study on the interaction of heavy, highly charged, and energetic ions (52 MeV Ni^13+) with pure H2O, pure CO2 and mixed H2O:CO2 astrophysical…”
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Radiolysis of ammonia-containing ices by energetic, heavy and highly charged ions inside dense astrophysical environments by Pilling, S, Duarte, E. Seperuelo, da Silveira, E. F, Balanzat, E, Rothard, H, Domaracka, A, Boduch, P

“…Deeply inside dense molecular clouds and protostellar disks, the interstellar ices are protected from stellar energetic UV photons. However, X-rays and…”
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Destruction of CO ice and formation of new molecules by irradiation with 28 keV O 6+ ions by de Barros, A.L.F., Seperuelo Duarte, E., Farenzena, L.S., da Silveira, E.F., Domaracka, A., Rothard, H., Boduch, P.

“…► Laboratory simulation of CO ice exposed to solar wind. ► Molecular destruction and formation yields measured for 28 keV oxygen beams. ► Formation of new…”
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