Australian Journal of Physics Astrophysical Supplements

TL Landecker; R Wielebinski

doi:10.1071/ph700957

Australian Journal of Physics Astrophysical Supplements

Australian Journal of Physics ◽

10.1071/ph700957 ◽

1970 ◽

Vol 23 (6) ◽

pp. 957 ◽

Cited By ~ 1

Author(s):

TL Landecker ◽

R Wielebinski

Keyword(s):

Computer Program ◽

Australian Journal ◽

Brightness Temperatures ◽

Absolute Measurements ◽

Aerial Temperature

A survey of the sky between S + 25� and S - 25� at 85 and 150 MHz is described, made with aerial beams 3.8� X 3.5� and 2.2� X 2.2�. Absolute measurements of aerial temperature are tabulated for points spaced 2�. A computer program is described which has enabled these results to be reduced to brightness temperatures, which are tabulated for the same points.

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A general computer program for the extended plate overlap algorithm

International Astronomical Union Colloquium ◽

10.1017/s0252921100074236 ◽

1978 ◽

Vol 48 ◽

pp. 287-293 ◽

Cited By ~ 1

Author(s):

Chr. de Vegt ◽

E. Ebner ◽

K. von der Heide

Keyword(s):

Computer Program ◽

Simultaneous Determination ◽

General Computer Program ◽

General Computer

In contrast to the adjustment of single plates a block adjustment is a simultaneous determination of all unknowns associated with many overlapping plates (star positions and plate constants etc. ) by one large adjustment. This plate overlap technique was introduced by Eichhorn and reviewed by Googe et. al. The author now has developed a set of computer programmes which allows the adjustment of any set of contemporaneous overlapping plates. There is in principle no limit for the number of plates, the number of stars, the number of individual plate constants for each plate, and for the overlapping factor.

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Structures and crystallization of vacuum-deposited amorphous Se and Sb films

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100173832 ◽

1990 ◽

Vol 48 (4) ◽

pp. 140-141

Author(s):

Makoto Shiojiri ◽

Toshiyuki Isshiki ◽

Tetsuya Fudaba ◽

Yoshihiro Hirota

Keyword(s):

Monte Carlo ◽

Electron Microscope ◽

Monte Carlo Method ◽

Computer Program ◽

Radial Distribution ◽

Film Formation ◽

Amorphous State ◽

Two Dimensional ◽

Amorphous Films ◽

Binding Condition

In hexagonal Se crystal each atom is covalently bound to two others to form an endless spiral chain, and in Sb crystal each atom to three others to form an extended puckered sheet. Such chains and sheets may be regarded as one- and two- dimensional molecules, respectively. In this paper we investigate the structures in amorphous state of these elements and the crystallization.HRTEM and ED images of vacuum-deposited amorphous Se and Sb films were taken with a JEM-200CX electron microscope (Cs=1.2 mm). The structure models of amorphous films were constructed on a computer by Monte Carlo method. Generated atoms were subsequently deposited on a space of 2 nm×2 nm as they fulfiled the binding condition, to form a film 5 nm thick (Fig. 1a-1c). An improvement on a previous computer program has been made as to realize the actual film formation. Radial distribution fuction (RDF) curves, ED intensities and HRTEM images for the constructed structure models were calculated, and compared with the observed ones.

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