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Volumn 288, Issue 5464, 2000, Pages 313-316

Titanium carbide nanocrystals in circumstellar environments

Author keywords

[No Author keywords available]

Indexed keywords

GRAPHITE; ISOTOPE; NANOPARTICLE; TITANIUM CARBIDE;

EID: 0034646980     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.288.5464.313     Document Type: Article
Times cited : (134)

References (36)
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  • 5
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    • T. Le Bertre, A. Lèbre, C. Waelkens, Eds. (Astronomical Society of the Pacific, San Francisco, CA)
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    • note
    • Because of their metallicity, kinematics, and spatial distribution, population II stars are thought to be older stars formed early on in the formation of the Milky Way.
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    • note
    • These experiments use the new technique of infrared laser induced thermal ionization with a free-electron laser. Neutral clusters are irradiated by a pulsed IR laser. When the laser wavelength is resonant with an IR active mode, the cluster can be heated by multiple absorption of photons. When there is sufficient excess energy, dissociation may occur. However, in clusters with strong bonding and a relatively low ionization energy, as is the case for some metal-carbide clusters, electron emission can become competitive with, or even dominant over, dissociation. Tuning the laser while measuring the mass-analyzed ion yield produces an IR spectrum of the neutral cluster.
  • 20
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    • note
    • Based on ISO, European Space Agency (ESA) project with instruments funded by ESA Member States (especially the principal investigator countries: France, Germany, the Netherlands, and the United Kingdom) and with participation of ISAS and NASA.
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    • personal communication
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    • note
    • We greatly appreciate the skillful assistance of the FELIX staff in providing the required beam time on FELIX. This work is part of the research program of the Stichting voor Fundamenteel Onderzoek der Materie (FOM), which is supported financially by the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) and receives direct support from the NWO via PIONIER-grant 030-66-089. M.A.D. acknowledges support from the U.S. Air Force Office of Scientific Research grant F49620-97-1-0042. L.B.F.M.W. acknowledges support from NWO through PIONIER-grant 616-78-333


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.