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  1. No Access

    Chapter

    Carbonaceous Onion-Like Particles: A Possible Component of the Interstellar Medium

    A carbonaceous material formed from a hydrocarbon plasma called quenched carbonaceous composite (QCC) is shown to have functional groups that approximate the positions of the interstellar 217.5 nm absorption a...

    Setsuko Wada, Alan T. Tokunaga in Natural Fullerenes and Related Structures … (2006)

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    Chapter and Conference Paper

    Chemical, Optical, and Infrared Properties of Quenched Carbonaceous Composites (QCCS)

    Quenched carbonaceous composite (QCC) was synthesized by quenching the plasma of methane gas. Chemical properties as well as optical and infrared spectra of the QCC and “oxidized” QCC were measured. Good agree...

    Akira Sakata, Setsuko Wada in Interstellar Dust (1989)

  3. No Access

    Article

    Does a 2,200 Å hump observed in an artificial carbonaceous composite account for UV interstellar extinction?

    The 2,200 Å hump in the interstellar extinction curve has attracted much attention since its discovery by Stecher1. Graphitic2,3 and carbonaceous grains4 and MgO (ref. 5) have been considered as possible candidat...

    Akira Sakata, Setsuko Wada, Yoshiji Okutsu, Haruo Shintani, Yoshikazu Nakada in Nature (1983)