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Abstract

AN ANALYSIS IS PRESENTED WHERE ELECTRON CAPTURE IN A(+Z) +H COLLISIONS, AS WELL AS FREE-BOUND DI-ELECTRONIC RECOMBINATION OF FREE ELECTRONS AND IONS, CAN BE PRECISELY DESCRIBED WITHIN CLASSICAL PHYSICS, PROVIDED THE CORRECT (FREE-FALL) ATOMIC MODEL IS USED. THE GREAT SPREAD OF EXPERIMENTAL DATA OBSERVED FOR Z>1 IN THE LOW ENERGY RANGE ORIGINATES IN THE RE-COMBINATION OF CHARGED IONS PRODUCED IN CHARGE TRANSFER COLLISIONS WITH BACKGROUND ELECTRONS - THE MAIN SOURCE OF WHICH IS THE TUNGSTEN OVERHEATED TO A VERY HIGH TEMPERATURE. IT SEEMS TO BE CERTAIN THAT THE FB-RECOMBINATION PROCESS BEING OUT OF CONTROL IS RESPONSABLE FOR THE SOMETIMES CONTRADICTORY NATURE OF MEASURED RESULTS - THEY SOMETIMES DIFFER BY ORDERS OF MAGNITUDE AND SHOW A HISTORICAL DEPENDENCE. THE FB-RECOMBINATION CROSS SECTION CAN REACH VERY LARGE VALUES BECAUSE IT IS SENSITIVE TO THE VELOCITY DISTRIBUTION OF BACK GROUND ELECTRONS.

Additional information

Authors: GRYZINSKI M INSTITUTE OF NUCLEAR STUDIES, SWIERK-OTWOCK, PL, INSTITUTE OF NUCLEAR STUDIES, SWIERK-OTWOCK, PL
Bibliographic Reference: REPORT JET-P(88)-23, 1988, AVAILABILITY: JET, ABINGDON, UK
Record Number: 1989126225300 / Last updated on: 1989-04-01
Category: PUBLICATION
Available languages: en