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Some heterocycles from dehydro-L-ascorbic ACID
Joint Authors
Ata, Kamal F.
al-Sikili, Muhammad Ali
Mancy, Suhaylah H.
Source
The Arabian Journal for Science and Engineering
Issue
Vol. 20, Issue 1 (31 Jan. 1995), pp.145-152, 8 p.
Publisher
King Fahd University of Petroleum and Minerals
Publication Date
1995-01-31
Country of Publication
Saudi Arabia
No. of Pages
8
Main Subjects
Abstract EN
Tests have been performed to examine the effects of y-exposure on opto-electronic components that can be used in digital fiber optic data links.
The response of fiber wave guides to ionizing radiation has been studied.
Measurements of the growth and decay of the radiation induced loss at 850 nm and 1300 nm have revealed that fibers are sensitive to y-dose.
In addition, a linear dependence of short circuit current on y-dose rate, up to 380 rad / sec, for the photodiode was shown.
At very high dose levels, permanent damage is noticed in the diode characteristics and its current decreases, where a value of 1600 μA, measured at light intensity level of 8000.0 lux, dropped to 1200, 950, 820, 700, 600, and 550 μA after y-exposure up to 2.0, 16, 38, 70, 105, and 140 Mrad respectively.
Also, the forward current gain factor of phototransistors, measured as a function of operating collector current, shows a severe decrease due to y- exposure.
The damage effect has minima that usually corresponds to the lower and higher ends of the operating collector current range of a device.
Finally, proposals using photodiodes for gamma dose- and dose rate-dosimetry are given, tested, and proved to be quite satisfactory.
American Psychological Association (APA)
Mancy, Suhaylah H.& Ata, Kamal F.& al-Sikili, Muhammad Ali. 1995. Some heterocycles from dehydro-L-ascorbic ACID. The Arabian Journal for Science and Engineering،Vol. 20, no. 1, pp.145-152.
https://search.emarefa.net/detail/BIM-597782
Modern Language Association (MLA)
Mancy, Suhaylah H.…[et al.]. Some heterocycles from dehydro-L-ascorbic ACID. The Arabian Journal for Science and Engineering Vol. 20, no. 1 (Jan. 1995), pp.145-152.
https://search.emarefa.net/detail/BIM-597782
American Medical Association (AMA)
Mancy, Suhaylah H.& Ata, Kamal F.& al-Sikili, Muhammad Ali. Some heterocycles from dehydro-L-ascorbic ACID. The Arabian Journal for Science and Engineering. 1995. Vol. 20, no. 1, pp.145-152.
https://search.emarefa.net/detail/BIM-597782
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 152
Record ID
BIM-597782