ZIB

1

Digitale Medien

Strontium-90 in the Australian Environment, 1957–58 (1959)

BRYANT, F. J. ; DWYER, L. J. ; MARTIN, J. H. ; [weitere]

[s.l.] : Nature Publishing Group

Nature 184 (1959), S. 755-760

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Introduction DURING the past four or five years a considerable effort has been made, notably in the United States and the United Kingdom, to gain precise information on the world-wide distribution of radioactive fallout from nuclear weapon tests. Results of such measurements to about mid-1957 were ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/184755a0

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2

Digitale Medien

Measurements of Strontium-90 in the Australian Environment up to December 1960 (1962)

BRYANT, F. J. ; DWYER, L. J. ; STEVENS, D. J. ; [weitere]

[s.l.] : Nature Publishing Group

Nature 193 (1962), S. 188-189

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] Between July 1 and December 31, 1960, 361 specimens of human bone tissue were collected in the five capital cities and compounded for analysis according to the methods discussed previously2. A comparison of the present results with those from previous periods shows that the levels of strontium-90, ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/193188a0

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3

Digitale Medien

Time delays in lead-salt semiconductor diode lasers (1984)

Qadeer, A. ; Reed, J. ; Bryant, F. J.

Springer

Applied physics 33 (1984), S. 181-182

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ISSN: 1432-0630

Schlagwort(e): 42.80

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau , Physik

Notizen: Abstract Time delays of typically 15–17μ have been measured directly for PbS1−xSex, Pb1−xSnxSe and Pb1−xSnxTe diode lasers at injection levels just above threshold in each case. The corresponding minority carrier lifetimes, as determined using the one-carrier injection model, were typically 2–4μ.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00618753

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4

Digitale Medien

Strontium-90 in Fall-Out and in Man in Australia, January 1959—June 1960 (1961)

BRYANT, F. J. ; DWYER, L. J. ; STEVENS, D. J. ; [weitere]

[s.l.] : Nature Publishing Group

Nature 190 (1961), S. 754-757

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ISSN: 1476-4687

Quelle: Nature Archives 1869 - 2009

Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik

Notizen: [Auszug] EARLY in 1956 a network of stations established by the Atomic Weapons Tests Safety Committee commenced to monitor radioactivity in fall-out over Australia from weapon tests at the Monte Bello Islands and at Maralinga, as well as from those held overseas1-7. The number of stations operative, as well ...

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1038/190754a0

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5

Digitale Medien

Vapour-deposited CdS films and their dependence on the source material (1987)

Bryant, F. J. ; Hariri, A. ; Scott, C. G.

Springer

Journal of materials science 22 (1987), S. 3745-3748

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ISSN: 1573-4803

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract An investigation has been made of the conditions required for the formation of vapour-deposited CdS thin films with reproducible characteristics suitable for use in photovoltaic solar cells. Cathodoluminescence spectroscopy has been used to provide information on differences in composition between the deposited films and the source material from which they were produced, and particular consideration has been given to the influence of the source material structure and stoichiometry on the electrical properties of the resultant films. Under identical deposition conditions, four different high-purity sources were shown to produce films with very different electrical characteristics, but by selecting appropriate deposition conditions (substrate temperature and deposition rate) it was found that each material was capable of generating films with the required characteristics.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01161488

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6

Digitale Medien

Blue light emitting ZnS diodes (1986)

Abdel-Kader, A. ; Bryant, F. J.

Springer

Journal of materials science 21 (1986), S. 3227-3230

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ISSN: 1573-4803

Quelle: Springer Online Journal Archives 1860-2000

Thema: Maschinenbau

Notizen: Abstract Low resistivity n-type ZnS single crystals of about 103Ω cm and 102Ω cm were achieved by firing the as-grown high resistivity ZnS single crystals using quartz ampoules and graphite crucible, respectively. Schottky diodes fabricated from sample I gave stable blue emission in reverse bias while sample II gave blue emission in forward bias. The characteristics of these diodes were studied and presented. Carrier concentrations were estimated from the capacitance-voltage measurements of the two types of diodes. Electroluminescence spectra as well as cathodoluminescence spectra of both samples are presented. The blue emission peak was ascribed to the donor-acceptor pairs transition.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00553360

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