Density physics

Lee C, W Yang and R G Parr 1988. Development of the Colle-Salvetti Correlation Energy Formula into a Functional of the Electron Density. Physical Review B37 785-789. 

C. Lee, W. Yang and R. G. Parr, Development of the Colle-Salvetti correlation-energy formula into a functional of the electron density, Physical Review B, 37, 785 (1988). 

Carbon fibers have been produced with a range of stiffness, strength, and density—physical differences that appear to be related to variations in the... 

Among several techniques possible to design process measurement tools, those based on spectroscopic techniques such as near-infrared (NIR), infrared (IR), Raman, terahertz (THz), fluorescence and UV-Vis absorption offer obvious advantages for PAT owing to their speed, compactness and versatility. Spectroscopic assessment yields chemical information such as content of active pharmaceutical ingredient (API) or of the relative concentration of different ingredients in a suspension, a blend, a composite preparation/formulation. However, physical information may also be obtained that is directly or indirectly related to, for example, particle size, porosity and density. Physical information is particularly valuable in characterisation of manufacturing processes and for reliable prediction of finished product properties. 

Table 2.6 The chemical compositions, densities, physical and mechanical properties of several commercially available ceramic fibers...

B.G. Williams. The Experimental Determination of Electron Momentum Densities. Physics Scripta. 15 (1977). 69-79. 

Drake, P., (2005) High-Energy-Density Physics, ISBN-10 3-540-29314-0 Springer Berlin Heidelberg New York... 

If talking in terms of fractions of electrons seems strange, remember that these fractions refer to the probability distribution of the electron density. Physically, because electron repulsion is larger than the crystal field in weak field complexes, this repulsion forces some electron density into the orbitals. 

Vuletic, V., Chin, C., Kerman, A. L, and Chu, S. (1998). Degenerate Raman sideband cooling of trapped cesium atoms at very high atomic densities. Physical Review Letters, 81, 5768-5771. 

Lischka, H., Shepard, R., Pitzer, R. M., Shavitt, L, Dallos, M., Muller, T., Szalay, P. G., Seth, M., Kedziora, G. S., Yabushita, S., Zhang, Z. Y. (2001). High-level multireference methods in the quantum-chemistry program system COLUMBUS Analytic MR-CISD and MR-AQCC gradients and MR-AQCC-LRT for excited states, GUGA spin-orbit Cl and parallel Cl density. Physical Chemistry Chemical Physics, 3(5), 664-673. 

Introduction. This chapter discusses the methods used to detect and identify energetic materials. Almost all of the analytical chemistry techniques are used. Normally, identification involves a series of tests, each providing a clue to the identity of the compound. In addition to the techniques discussed in this chapter, identifying information can be obtained from physical properties such as melting point, crystalline structure, density, physical state, color, and indicies of refraction. 

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