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Author Reimer, L.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language German
Subject Keyword CHEMISTRY ♦ AMINO ACIDS ♦ ANTHRACENE ♦ BEAMS ♦ CRYSTALS ♦ DECOMPOSITION ♦ DIFFRACTION ♦ DYES ♦ ELECTRON MICROSCOPY ♦ ELECTRONS ♦ ORGANIC ACIDS ♦ ORGANIC COMPOUNDS ♦ RADIATION DOSES ♦ RADIATION EFFECTS
Abstract In vapor-deposited layers of organic materials the decomposition of the crystalline structure in irradiation with 60-kv electrons results at such low irradiation intensities that heating of the layers does not occur. The electron microscopic dark field image from interference schlieren, the decrease of the scattering contrast with the irradiation dose, and the electron diffraction was investigated in paraffin layers. In other layers (stearic acid, glycocol, leucin, anthracene, indigo, and phthalocyanine) the decrease of the intensity of the Debye-Scherrer lines with increasing irradiation doses was followed with electron diffraction. Under the irradiation conditions occurring in practical work all substances have lost their crystalline structure in a short time. Remarkable variations in the critical irradiation dose in aliphatic and aromatic compounds were obtained. Whereas, for instance, glycocol exhibits an amorphous diffraction diagram after an irradiation dose of 10/sup -3/ amp-sec/ cm/sup 2/ Cu phthalocyanine needs 3 amp-sec/cm/sup 2/. (tr-auth)
ISSN 03729516
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-05-01
Journal Zeitschrift fuer Naturforschung
Volume Number 15a
Organization Universitat, Munster, Ger.


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