Spectra of coupled electron-ripplon oscillation of two-dimensional (2D) Wigner crystal with the surface electron density n s =6.4Γ10 8 cm Γ2 (melting temperature of 0.58 K) are measured under conditions of both complete and noncomplete screening of the holding electric field in temperature range 0.0
42. Measurements of the temperature dependence of the excitation spectrum of liquid helium
β Scribed by J. Yarnell Bendt; E.C. Kerr; Arnold
- Publisher
- Elsevier Science
- Year
- 1958
- Weight
- 70 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0031-8914
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π SIMILAR VOLUMES
New measurements on the vapour pressure curve of helium were made. They gave temperatures which throughout are slightly higher than those calculated according to the formulae which form the basis of the temperature scale 1932, to a maximum of 0.026 degree for helium II at 1.6 ~ K, and of 0.015 degre
Some years ago Dr. H y 1 1 e r a a s suggested to us to measure the intensity-ratio of heliumlines, in order to check the results of a planned calculation of probabilities of transition. The comparison of theory and observation is simplest when the lines correspond to transitions from a common initi