Published January 1963
| Version v1
Book
The Frequencies of the Normal Modes of Aluminium
Description
The results of Larsson, Dahlborg and Holmryd, who have measured the frequencies of about 300 normal modes of aluminum in the 001 symmetry plane, have been analysed on the basis of the Born-von Karman theory of lattice vibrations. The calculation shows that at least seventh neighbour forces are necessary in order to fit the data. Each time the model is extended to take account of forces due to the next set of neighbours, the values of the previously determined force constants change appreciably. The values finally obtained are therefore of doubtful significance. (author)
Abstract (French)
Les resultats obtenus par Larsson, Dahiborg et Holmryd qui ont mesure les frequences d'environ 300 modes normaux de l'aluminium dans le plan de symetrie [001], ont ete analyses en partant de la theorie de Born-von Karman sur les vibrations de reseaux. Les calculs montrent que, pour expliquer ces donnees, il faut tenir compte pour le moins des forces exercees par le septieme atome voisin. Or, chaque fois que l'on etend le modele pour prendre en consideration les forces exercees par la serie suivante d'atomes voisins, les valeurs des constantes relatives a la force determinee auparayant sont modifiees de facon appreciable. Il s'ensuit que les valeurs finalement obtenues sont d'une utilite douteuse. (author)Abstract (Spanish)
El autor analiza segun a teoria de Born-von Karman relativa a las vibraciones reticulares, los valores medidos por Larssot , Dahlborg y Holmryd de las frecuencias de unos 300 modos normales del aluminio en el plano de simetria 001. Los calculos demuestran que para ajustar los datos es preciso recurrir a fuerzas que alcancen hasta el septimo atomo por lo menos. Cada vez que el modelo se ha ampliado para tomar en consideracion fuerzas debidas al grupo siguiente de atomos vecinos, los valores de las constantes de fuerzas determinadas anteriormente han cambiado de modo apreciable. Por tanto, los valores obtenidos en definitiva son de significacion dudosa. (author)Additional details
Additional titles
- Original title (English)
- Les frequences des modes normaux de l'aluminium; Kolebatel'nye chastoty normal'nykh urovnej alyuminiya; Frecuencias de los modos normales del aluminio
Publishing Information
- Publisher
- IAEA
- Imprint Place
- Vienna (International Atomic Energy Agency (IAEA))
- Imprint Title
- Inelastic Scattering of Neutrons in Solids and Liquids. V. II. Proceedings of the Symposium on Inelastic Scattering of Neurons in Solids and Liquids
- Imprint Pagination
- 360 p.
- Series
- Proceedings Series
- Journal Page Range
- p. 55-69
- ISSN
- 0074-1884
Conference
- Title
- Symposium on Inelastic Scattering of Neutrons in Solids and Liquids
- Dates
- 10-14 Sep 1962
- Place
- Chalk River (Canada)
INIS
- Country of Publication
- International Atomic Energy Agency (IAEA)
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 44053914
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALUMINIUM; BORN-VON KARMAN THEORY; CRYSTAL STRUCTURE; LATTICE VIBRATIONS; NEUTRON DIFFRACTION; SYMMETRY
- Descriptors DEC
- COHERENT SCATTERING; DIFFRACTION; ELEMENTS; METALS; SCATTERING
Optional Information
- Notes
- Abstract also available in Russian; 4 figs., 4 tabs., 11 refs. Imprint:In two volumes
- Secondary number(s)
- STI/PUB--62(v.2)