Space weathering simulations through controlled growth of iron nanoparticles on olivine

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F14%3A10284741" target="_blank" >RIV/00216208:11310/14:10284741 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985831:_____/14:00430060 RIV/61989592:15310/14:33151792

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0019103514001961" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0019103514001961</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.icarus.2014.04.004" target="_blank" >10.1016/j.icarus.2014.04.004</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Space weathering simulations through controlled growth of iron nanoparticles on olivine

Popis výsledku v původním jazyce

Airless planetary bodies are directly exposed to space weathering. The main spectral effects of space weathering are darkening, reduction in intensity of silicate mineral absorption bands, and an increase in the spectral slope towards longer wavelengths(reddening). Production of nanophase metallic iron (npFe(0)) during space weathering plays major role in these spectral changes. A laboratory procedure for the controlled production of npFe(0) in silicate mineral powders has been developed. The method isbased on a two-step thermal treatment of low-iron olivine, first in ambient air and then in hydrogen atmosphere. Through this process, a series of olivine powder samples was prepared with varying amounts of npFe(0) in the 7-20 nm size range. A logarithmic trend is observed between amount of npFe(0) and darkening, reduction of 1 gm olivine absorption band, reddening, and 1 gm band width. Olivine with a population of physically larger npFe(0) particles follows spectral trends similar to o

Název v anglickém jazyce

Space weathering simulations through controlled growth of iron nanoparticles on olivine

Popis výsledku anglicky

Airless planetary bodies are directly exposed to space weathering. The main spectral effects of space weathering are darkening, reduction in intensity of silicate mineral absorption bands, and an increase in the spectral slope towards longer wavelengths(reddening). Production of nanophase metallic iron (npFe(0)) during space weathering plays major role in these spectral changes. A laboratory procedure for the controlled production of npFe(0) in silicate mineral powders has been developed. The method isbased on a two-step thermal treatment of low-iron olivine, first in ambient air and then in hydrogen atmosphere. Through this process, a series of olivine powder samples was prepared with varying amounts of npFe(0) in the 7-20 nm size range. A logarithmic trend is observed between amount of npFe(0) and darkening, reduction of 1 gm olivine absorption band, reddening, and 1 gm band width. Olivine with a population of physically larger npFe(0) particles follows spectral trends similar to o

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Icarus

ISSN

0019-1035

e-ISSN

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Svazek periodika

237

Číslo periodika v rámci svazku

15 July 2014

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

75-83

Kód UT WoS článku

000337556400008

EID výsledku v databázi Scopus

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