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Second, efforts should be devoted to the understanding of the data systematics, viz., the trends of cross sections for a series of molecules. First, methods of absolute cross-section measurements both for electron and ionic collisions must be thoroughly reviewed so that sources of systematic errors may be identified and corrected. There are three areas to which major efforts should be directed. More recent studies concern the determination of the analytic expression most suitable for fitting the data on the oscillator-strength distribution or the energy distribution of secondary electrons from ionizing collisions of charged particles. Development and use of these data constraints, first more » put forth by Platzman, can now be demonstrated in many examples. For example, the Bethe theory indicates a close connection between photoabsorption and energy absorption by glancing collisions. One practical approach to the cross-section determination is to test experimental data with general criteria. Current experimental data of the cross sections are far from being complete or even satisfactory for tentative applications. Authors: Inokuti, Mitio Publication Date: Research Org.: Argonne National Lab., IL (USA) Sponsoring Org.: DOE/ER OSTI Identifier: 6234013 Report Number(s): CONF-9009267-2 ON: DE91004475 TRN: 90-036209 DOE Contract Number: W-31109-ENG-38 Resource Type: Conference Resource Relation: Conference: Physical and chemical mechanisms in molecular radiation biology conference, Woods Hole, MA (USA), 3- Country of Publication: United States Language: English Subject: 74 ATOMIC AND MOLECULAR PHYSICS 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ATOM COLLISIONS CHARGED-PARTICLE TRANSPORT THEORY ELECTRON COLLISIONS ION COLLISIONS MOLECULE COLLISIONS ABSORPTION EXCITATION SOLID STATE PHYSICS COLLISIONS ENERGY-LEVEL TRANSITIONS PHYSICS TRANSPORT THEORY 640304* - Atomic, Molecular & Chemical Physics- Collision Phenomena 640302 - Atomic, Molecular & Chemical Physics- Atomic & Molecular Properties & Theory 656002 - Condensed Matter Physics- General Techniques in Condensed Matter- (1987-)Ī large volume of data of these cross sections are required for solving problems of radiological physics and dosimetry, as well as for detailed analysis of the earliest stage of radiation actions on matter (including the biological cell and substances constituting it).