E
E. T. Arakawa
Researcher at Oak Ridge National Laboratory
Publications - 115
Citations - 3717
E. T. Arakawa is an academic researcher from Oak Ridge National Laboratory. The author has contributed to research in topics: Surface plasmon & Plasmon. The author has an hindex of 31, co-authored 115 publications receiving 3603 citations.
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Optical constants of organic tholins produced in a simulated Titanian atmosphere: From soft x-ray to microwave frequencies
TL;DR: In this paper, the real and imaginary parts of the complex refractive index of thin films of the dark reddish organic solids called tholins, produced by continuous D.C. discharge through a 0.9 N2/0.1 CH4 gas mixture at 0.2 mb, were determined from a combination of transmittance, specular reflectance, interferometric, Brewster angle, and ellipsometric polarization measurements.
Journal ArticleDOI
Amino acids derived from Titan tholins
Bishun N. Khare,Carl Sagan,Hiroshi Ogino,Bartholomew Nagy,Cevat Er,Karl H. Schram,E. T. Arakawa +6 more
TL;DR: The results suggest that episodes of liquid water in the past or future of Titan might lead to major further steps in prebiological organic chemistry on that body.
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Optical and dielectric properties of DNA in the extreme ultraviolet
TL;DR: In this article, the optical constants of dry films of deoxyribonucleic acid (sodium salt of calf thymus DNA) have been determined in the 2 −82 eV region of photon energy.
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Production and Optical Constants of Ice Tholin from Charged Particle Irradiation of (1:6) C2H6/H2O at 77 K
B. N. Khare,W. R. Thompson,L. Cheng,Christopher F. Chyba,C. Sagan,E. T. Arakawa,C. Meisse,P. S. Tuminello +7 more
TL;DR: In this article, 50 separate irradiations of a 6:1 mixture of H2O/C2H6 ice conducted over a 5-month period have yielded sufficient tholin for the determination of its physical constants in the 006 to 40 micron range while the imaginary part of the refractive index k was obtained by transmission measurements on thin-film samples and Kramers-Kronig analysis (KKA).
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Polycyclic aromatic hydrocarbons in the atmospheres of Titan and Jupiter.
Carl Sagan,Bishun N. Khare,W. R. Thompson,Gene D. McDonald,Michael R. Wing,Jeffrey L. Bada,Tuan Vo-Dinh,E. T. Arakawa +7 more
TL;DR: Incompletely characterized complex organic solids (tholins) produced by irradiating simulated Titan atmospheres reproduce well the observed UV/visible/IR optical constants of the Titan stratospheric haze.