Collision physics

Moseley J T 1984 Determination of ion molecular potential curves using photodissociative processes Applied Atomic Collision Physics ed H S W Massey, E W McDaniel and B Bederson (New York Academic)... 

Fluestis D L 1982 Introduotion and overview Applied Atomic Collision Physics, Vol 3, Gas Lasersed FI SW Massey, E W MoDaniel, B Bederson and W L Nighan (New York Aoademio)... 

McDaniel E W and McDowell M R C (eds) 1969 Case Studies in Atomic Collision Physics (Amsterdam North-Flolland) vol 1... 

The relativistic regime differs fundamentally from what has been discussed so far, in that the cross sections for Coulomb scattering are not the same in quantum as in classical mechanics. Therefore, with the exception of the Fermi density effect -which is classical as far as the collision physics is concerned - classical arguments are less powerful in this regime. 

M. A. Biondi, in Applied Atomic Collision Physics. Academic Press, New York, 1982, p. 173. 

The experimental positron physics group at University College London was initiated by Professor T.C. Griffith and Dr G.R. Heyland at the instigation of the late Sir Harrie Massey. We wish to record our gratitude to these three pioneers for their seminal contributions to positron collision physics and for introducing us to this fascinating subject. 

I. Lingren and A. Rosen, Case Studies in Atomic Collision Physics 4 93 (1975). 

Kel85] Kelly HP 1985 Many body calculations in atomic physics, in Fundamental processes in atomic collision physics (Santa Flavia, Italy, 1984), NATO ASI Series B, Physics 134, eds. H Kleinpoppen, JS Briggs and HO Lutz (Plenum Press, New York) p. 239. 

The mechanisms of a single particle-wall collision are given in Chapter 2. A particle-wall collision in pneumatic transport systems is a complex process. The bouncing characteristics depend on many parameters, including impact angle, translational and rotational velocities of the particle before collision, physical properties of the wall and particles, and wall roughness and particle shape. 

Gatland IR (1974) In McDaniel EW, McDowell MRC (eds) Case studies in atomic collision physics. North-Holland, Amsterdam, vol 4, p 369... 

R.W.P. McWhirter, H.P. Summers Atomic radiation from low density plasma. In Applied Atomic Collision Physics, Vol. 2, Plasmas, ed. by C.F. Barnett, M.F.A. (Acadademic Press, London)... 

This summary of applications from chemical calculations to heavy-ion collision physics shows that DV-Xa calculations are an important tool in all of these fields and thus shows the usefulness of this method. 

Crossed-beam techniques must also be used when the targets are chemically unstable systems, such as hydrogen atoms. These techniques are now being used in many laboratories and have become indispensable in atomic collision physics. 

Knowledge of the collision physics is also an important source of information on the dynamical properties of the meteor. In principle, the initial... 

Steiner, B. Photodetachment cross sections and electron affinities, in Case studies in atomic collision physics II. by McDaniel, E. W., McDowell, M. R. C. (eds.). Amsterdam North-HoUand Publishing Company 1972, pp. 483-545 Steinmetz, H., Hettich, A. Z. anorg. Chem. 167, 75 (1927)... 

In the next section we will discuss the approach we have developed for obtaining the molecular Hartree-Fock continuum orbitals. We will discuss how our approach is based on the Schwinger variational method and how in its present form it can be viewed as a hybrid method that uses both the basis-set expansion techniques of quantum chemistry and the numerical single-center expansion techniques of atomic collision physics. We will then discuss the results of applications of this approach to study shape resonances in the photolonlzatlon of several molecules, e.g., N2, CO, CO2, C2H2, and C2N2. These results will also be compared with available experimental data and with the results of studies of these same systems by different methods and models. 

Theoretical and experimental investigations of relativistic and QED effects in atomic physics and chemistry have increased continuously during the last decade. As a consequence of this interest in various relativistic phenomena and in their empirical manifestations a diverse field of research has developed linking together widespread activities ranging from high-energy heavy-ion collision physics, atomic or molecular physics and chemistry of heavy elements to solid-state physics. 

Nucleation is a crucial step in the whole process of carbonaceous particle formation. According to Frenklach and Wang (1990, 1994), nucleation is controlled mainly by the sticking of PAH sheets during their collisions. Physically bound clusters of PAH are then formed and successively evolve toward aerosol, solid particles and crystallites. As shown in Fig. 25, different polycyclic aromatic layers can form more or less regularly ordered graphite structures, all of which have interlayer distances of about 0.35 nm. These two to four-layer structures are assumed as the threshold of the formation of the solid phase particle inception typically takes place at molecular masses of 1,000-2,000 amu. 

Collisions with atomic clusters represent a relatively new branch of collision physics as compared to the well established fields of ion-atom collisions [1] and ion-solid interaction [2]. The study of cluster collisions is of particular interest and importance because it offers the possibility, to tackle bridge-building questions (like the transition from individual excitations in the elementary ion-atom collision to the macroscopic stopping power in solids) as well as fundamental problems (like phase transitions in finite systems). 

McDaniel E W and McDowell M R C (eds) 1972 Case Studies in Atomic Collision Physics (Amsterdam North-Holland) vol 2 McDaniel E W, rmak V, Dalgarno A, Ferguson E E and Friedman L (eds) 1970 Ion-Molecule Reactions (New York Wiley) Bates D R (ed) 1962 Atomic and Molecular Processes (New York Academic)... 

At high energies, on the other hand, one can expect that the collision physics will simplify considerably with the projectile moving much faster than the molecular electrons, correlation and identity of particles (i.e., polarization and exchange effects) become less important, and the potential energy of interaction... 

Some New Experimental Methods in Collisions Physics, R. F. Stebbings Atomic Collision Processes in Gaseous Nebulae, M. J. Seaton Collisions in the Ionosphere, A. Dalgamo The Direct Study of Ionization in Space,... 

The construction of such a TDMEP was in harmony with femtosecond experiments of "transition state spectroscopy" that had been done in the late 1980s [58, 59]. It is also relevant to phenomena in current ultracold collision physics that go under the name "photoassociation" [60]. 

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