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Atomic and molecular

Like the geometry of Euclid and the mechanics of Newton, quantum mechanics is an axiomatic subject. By making several assertions, or postulates, about the mathematical properties of and physical interpretation associated with solutions to the Scluodinger equation, the subject of quantum mechanics can be applied to understand behaviour in atomic and molecular systems. The fust of these postulates is ... [Pg.5]

A 1.2.2 QUANTUM THEORY OF ATOMIC AND MOLECULAR STRUCTURE AND MOTION... [Pg.54]

Traditionally one categorizes matter by phases such as gases, liquids and solids. Chemistry is usually concerned with matter m the gas and liquid phases, whereas physics is concerned with the solid phase. However, this distinction is not well defined often chemists are concerned with the solid state and reactions between solid-state phases, and physicists often study atoms and molecular systems in the gas phase. The tenn condensed phases usually encompasses both the liquid state and the solid state, but not the gas state. In this section, the emphasis will be placed on the solid state with a brief discussion of liquids. [Pg.86]

This expression is not orbitally dependent. As such, a solution of the Hartree-Fock equation (equation (Al.3.18) is much easier to implement. Although Slater exchange was not rigorously justified for non-unifonn electron gases, it was quite successfiil in replicating the essential features of atomic and molecular systems as detennined by Hartree-Fock calculations. [Pg.95]

The Hamiltonian considered above, which connmites with E, involves the electromagnetic forces between the nuclei and electrons. However, there is another force between particles, the weak interaction force, that is not invariant to inversion. The weak charged current mteraction force is responsible for the beta decay of nuclei, and the related weak neutral current interaction force has an effect in atomic and molecular systems. If we include this force between the nuclei and electrons in the molecular Hamiltonian (as we should because of electroweak unification) then the Hamiltonian will not conuuiite with , and states of opposite parity will be mixed. However, the effect of the weak neutral current interaction force is mcredibly small (and it is a very short range force), although its effect has been detected in extremely precise experiments on atoms (see, for... [Pg.170]

Koide A, Meath W J and Allnatt A R 1981 Second-order charge overlap effects and damping functions for isotropic atomic and molecular interactions Chem. Phys. 58 105... [Pg.216]

Stroscio J A and Eigler D M 1991 Atomic and molecular manipulation with the scanning tunneling microscope Science 254 319... [Pg.319]

Nikitin E E 1974 Theory of Elementary Atomic and Molecular Processes In Gases (Qxford Ciarendon)... [Pg.797]

Dalgarno A and Lepp S 1996 Applications of atomic and molecular physics to astrophysics Atomic, Moiecuiar, and Opticai Physics Handbook ed G W F Drake (Woodbury, NY AlP)... [Pg.828]

Sooies G (ed) 1988 Atomic and Molecular Beam Methods vo s 1 and 2 (New York Oxford University Press)... [Pg.881]

In many kinds of atomic and molecular collision problem the wavefunction has many oscillations because the... [Pg.985]

Massey H S W 1979 Atomic and Molecular Collisions (London Taylor and Francis)... [Pg.1002]

Murrell J N and Bosanac S D 1989 introduction to the Theory of Atomic and Molecular Collisions (New York Wiley)... [Pg.1002]

Miller W H 1971 Semiclassical nature of atomic and molecular collisions Accounts Chem. Res. 4 161-7 Miller W H 1974 Classical-limit quantum mechanics and the theory of molecular collisions Adv. Chem. Phys. 25 69-177... [Pg.1004]

Some of the internal (rovibronic) energy of the atomic and molecular collision partners is transfomred into extra translational energy AE = (or consumed, if A E is negative). If one averages over a thennal... [Pg.1047]

Novick S, Leopold K and Klemperer W 1990 Atomic and Molecular Olusters ed E Bernstein (New York Elsevier) p 359-91 (the clusters listing presented here is now maintained electronically by S Novick)... [Pg.1261]

Many of the fiindamental physical and chemical processes at surfaces and interfaces occur on extremely fast time scales. For example, atomic and molecular motions take place on time scales as short as 100 fs, while surface electronic states may have lifetimes as short as 10 fs. With the dramatic recent advances in laser tecluiology, however, such time scales have become increasingly accessible. Surface nonlinear optics provides an attractive approach to capture such events directly in the time domain. Some examples of application of the method include probing the dynamics of melting on the time scale of phonon vibrations [82], photoisomerization of molecules [88], molecular dynamics of adsorbates [89, 90], interfacial solvent dynamics [91], transient band-flattening in semiconductors [92] and laser-induced desorption [93]. A review article discussing such time-resolved studies in metals can be found in... [Pg.1296]

Figure Bl.7.12. A schematic diagram of a typical selected-ion flow (SIFT) apparatus. (Smith D and Adams N G 1988 The selected ion flow tube (SIFT) studies of ion-neutral reactions Advances in Atomic and Molecular Physics vol 24, ed D Bates and B Bederson p 4. Copyright Academic Press, Inc. Reproduced with pennission.)... Figure Bl.7.12. A schematic diagram of a typical selected-ion flow (SIFT) apparatus. (Smith D and Adams N G 1988 The selected ion flow tube (SIFT) studies of ion-neutral reactions Advances in Atomic and Molecular Physics vol 24, ed D Bates and B Bederson p 4. Copyright Academic Press, Inc. Reproduced with pennission.)...
Engel T and Rieder K H 1982 Structural studies of surfaces with atomic and molecular beam diffraction Structural Studies of Surfaces With Atomic and Molecular Beam Scattering (Springer Tracts in Modern Physics vol 91) (Berlin Springer) pp 55-180... [Pg.1827]

McDaniel E W and Mansky E J 1994 Guide to bibliographies, books, reviews and compendia of data on atomic collisions Advances in Atomic and Molecular Physics vol 33, ed B Bederson and FI Walther p 389... [Pg.2058]

Bates D R and Estermann I (eds) 1965 Advances in Atomic and Molecular Physics vol 1... [Pg.2058]

Bederson B and Dalgarno A (eds) 1994 Advances in Atomic Molecular and Optical Physics vol 32 Bederson B and Walther FI (eds) 1994 Advances in Atomic Molecular and Optical Physics vol 33 Bederson B and Walther FI (eds) 1998 Advances in Atomic Molecular and Optical Physics vol 38 Scoles G (ed) 1988 Atomic and Molecular Beam Methods (New York Oxford University Press)... [Pg.2058]

Valentin J J, Coggiola M J and Lee Y T 1977 Supersonic atomic and molecular halogen nozzle beam source Rev. Sc/. Instrum 48 58-63... [Pg.2086]


See other pages where Atomic and molecular is mentioned: [Pg.310]    [Pg.9]    [Pg.33]    [Pg.35]    [Pg.53]    [Pg.898]    [Pg.1777]    [Pg.1823]    [Pg.1824]    [Pg.1957]    [Pg.2058]    [Pg.2086]   
See also in sourсe #XX -- [ Pg.43 , Pg.44 , Pg.45 , Pg.46 , Pg.47 ]




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