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(e,2e) & Related Processes : NATO SCIENCE SERIES SERIES C: MATHEMATICAL AND PHYSICAL SCIENCES - Colm T. Whelan

(e,2e) & Related Processes

NATO SCIENCE SERIES SERIES C: MATHEMATICAL AND PHYSICAL SCIENCES

By: Colm T. Whelan (Editor), H. R. J. Walters (Editor), Azzedine Lahmam-Bennani (Editor), H. Ehrhardt (Editor)

Hardcover Published: 31st August 1993
ISBN: 9780792324584
Number Of Pages: 436

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An (e,2e) experiment is the measurement of an electron impact ionization process where both the exiting electrons are detected in coincidence. Such measurements are almost at the limit of what can be known, in quantum mechanical terms, and its description presents a substantial theoretical challenge. There are at least two very good reasons for studying (e,2e) and related processes. In the first place we are now only beginning to understand the dynamics of the collision process. The range and sophistication of present experiments allow us to identify kinematic regimes where delicate and subtle effects can be observed, stretching current theories to their limit. Secondly, the multiple coincident technique offers us the possibility of an analytical tool that could be used to probe the structure of the target, be it atom, molecule, thin film or surface. Measurements are now being performed at threshold on H, on the inner shell levels of Au and Ag using projectiles at relativistic energies, with spin-polarized electrons on Li, on a myriad of molecules in symmetric, noncoplanar kinematics, and on He in a multitude of different geometries. The technique has recently been extended to excitation ionization (e,3e) and (gamma,2e) experiments. Major theoretical advances have also been made, but much still remains to be done.
This volume contains the invited papers that were presented at the Workshop on (e,2e) and related processes which took place in September/October 1992 in Cambridge, UK. The three major review papers which it contains together form an excellent introduction to this new and rapidly expanding area of physics and set the scene for the wide range of research contributions, both experimental and theoretical, from the leading scientists in the field.

Preface
(e,2e), effective charges, distorted waves and all that!p. 1
Directions in (e,2e) and related processesp. 33
Near threshold (e,2e) ionisation of helium and atomic hydrogenp. 75
Does asymmetric (e,2e) approach the dipolar limit at intermediate energies?p. 83
Knockout reactions to study atomic and molecular electronic structure: the futurep. 91
Absolute experimental cross sections for symmetric coplanar (e,2e) collisions of 45 to 500eV electrons with heliump. 101
Recoil ion momentum spectroscopy: a complementary technique to (e,2e) and (e,3e)p. 119
Arbitrary charged particle-impact ionisation of H and He: scaling properties of the cross sectionsp. 131
Electron impact ionisation-excitation of helium: calculations using coupled channel parametric potential wavefunctionsp. 145
Democratic parameters for (e,2e) and (e,3e) kinematicsp. 165
Asymptotically exact distorted wave calculationsp. 171
New experiments needed in (e,2e)p. 185
New trends: electron impact ionisation of laser excited atoms and double ionisation by electron and photon impactp. 201
Laser-assisted (e,2e) collisionsp. 211
(e,2e) calculations using a correlated final statep. 223
Solid state perspective in the theory of the Auger decayp. 237
High-performance computers in (e,2e) and (e,3e) interactions with atomsp. 259
Energy loss and (e,2e) studies of molecules on surfacesp. 265
Influence of Coulomb forces on the angular momenta of products in three or more fragmentary reactionsp. 273
Multiconfiguration Hartree-Fock calculation of the autoionisation resonance parameters in the (e,2e) reaction on helium atomp. 281
Near threshold ([gamma], 2e) experiments in the perpendicular planep. 297
Multicoincidence investigation of ionisation dynamicsp. 307
Coupling the coplanar (e,2e) geometry to the perpendicular plane geometryp. 327
Double ionisation of noble gases by electron impactp. 341
Coulomb-Born approximation for the calculation of (e,2e) cross-sectionsp. 357
In Memorium Wolfgang Hinkp. 381
Processes other than simple outer shell ionisationp. 383
Investigation of the angular dependence of post collision interaction effects using coincidence techniquesp. 393
Relativistic (e,2e) processes under Bethe ridge conditionsp. 403
Distorted-wave calculations of triple differential cross section for inner shell ionisationp. 409
Participantsp. 423
Contributorsp. 428
Indexp. 435
Table of Contents provided by Blackwell. All Rights Reserved.

ISBN: 9780792324584
ISBN-10: 0792324587
Series: NATO SCIENCE SERIES SERIES C: MATHEMATICAL AND PHYSICAL SCIENCES
Audience: Professional
Format: Hardcover
Language: English
Number Of Pages: 436
Published: 31st August 1993
Publisher: Springer
Country of Publication: NL
Dimensions (cm): 24.77 x 17.15  x 3.18
Weight (kg): 0.93