摘要:

Measurements of the de Haas—van Alphen effect in copper, silver and gold suggest strongly that the Fermi surfaces of these metals make contact with the hexagonal faces of the Brillouin zone. The areas of cross section of the main part of the Fermi surface and of the contact have been determined. Some provisional values of effective masses have also been obtained.

ISSN:0031-8086    

DOI:10.1080/14786436008243292

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

It is shown that the magnetoresistance measurements of Alekseevskii and Gaidukov on single crystals of copper, silver and gold are consistent with the Fermi surfaces of these metals proposed on the basis of anomalous skin effect and de Haas-van Alphen effect measurements.

ISSN:0031-8086    

DOI:10.1080/14786436008243293

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

A theory of theg-factor of conduction electrons is developed which is valid for low symmetry and arbitrary strength of spin-orbit coupling. Application to bismuth shows thatm≡2/g≃m0for most orientations, wherem0is the effective mass entering the cyclotron frequency. Thusgis 260 whenHis in the direction of smallestm0. Further, the lifting of the spin degeneracy by the magnetic field introduces a factor cos τπm0/m8into therth oscillatory term in the susceptibility. This explains the apparent phase shift of τπ observed in the de Haas-van Alphen oscillations of Bi.

ISSN:0031-8086    

DOI:10.1080/14786436008243294

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

Measurements of the absorption of p-type semiconducting diamonds have been made at temperatures in the range 450 to 600°k and over the wavelength range between 6 and 45 μ. The major effect observed is an absorption, which is present only in hot semiconducting diamonds, which increases with increasing wavelength and temperature. The increase with temperature is similar to that of the increase in carrier concentration as determined from measurements of the Hall effect.

ISSN:0031-8086    

DOI:10.1080/14786436008243295

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

Damping capacity measurements have been carried out on copper-silicon alloy specimens before and after internal oxidation and the results compared with those for oxygen free, high conductivity copper specimens given the same treatment. High damping values have been noted for the fully internally oxidized copper-silicon material and it is suggested that this is caused, to some extent, by the generation of relatively free dislocations around the silica particles during the growth and subsequent cooling of these inclusions.

ISSN:0031-8086    

DOI:10.1080/14786436008243296

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

The important design features of a 10 in. hydrogen bubble chamber, its magnet and the associated control circuitry are presented.

ISSN:0031-8086    

DOI:10.1080/14786436008243297

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

An investigation has been made of the dependence of systematic track distortion in a 10 in. diameter liquid hydrogen bubble chamber upon track position in the chamber, beam entry time and flash delay.

ISSN:0031-8086    

DOI:10.1080/14786436008243298

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

The stress field of a sharply angular dislocation is calculated by Burgers' method. It is shown that more complicated configurations may be composed of angular dislocations, and the corresponding stress fields deduced by adding the fields of the components. Some examples are given, including the triangle, hexagon and tetrahedron.

ISSN:0031-8086    

DOI:10.1080/14786436008243299

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

Equations are derived for the rate of precipitation from an initially homogeneous solid solution on the assumptions that the process involves growth of existing nuclei and that the rate of growth is controlled by diffusion. Various forms of precipitate are considered. Impingement of the zones of the parent solution depleted in solute is allowed for by multiplying the diffusion potential by (1 -y) whereyis the fraction of the total precipitation which has occurred. The results are appreciably different from the equations currently used to analyse kinetic data.

ISSN:0031-8086    

DOI:10.1080/14786436008243300

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor

摘要:

The theoretical study of ideal crystal lattices is considerably strengthened when use can be made of experimental values for the thermodynamic properties of the solidified inert gases (Dobbs and Jones 1957) and in an earlier paper (Debbset al, 1956) experimental values of the density and expansivity of solid argon were reported. In the present note we give the corresponding figures for krypton.

ISSN:0031-8086    

DOI:10.1080/14786436008243301

出版商:Taylor & Francis Group    

年代:1960

数据来源: Taylor