title: Microscopic track structure of heavy ions videoelectronically measured.
abstract: The track of an ionizing particle in a track detector, such as silver-chloride or nuclear emulsion, contains two measurable parameters, the "track width"--which corresponds to the integrated lateral energy deposition dE/dtau(x,r) over r along dx (dE/dx or LET)--and the lateral distribution of the track density along r, the radial structure of the track. A videoelectronic device consisting of a computer-controlled microscope, developed in Frankfurt, automatically reads out consecutive lateral profiles of the optical density of a preset track, following it through the depth of the detector. For a given track length (100 microns, 400 profiles for instance) the system evaluates the mean track width MTW and the variance sigma 2 . Both quantities are correlated so that a given MTW (LET) belongs to different values of sigma 2 depending on the charge of the particle. Videosystem and results are presented.
authors.affiliation: Institut fur Kernphysik der Universitat Frankfurt, FRG.
authors.forename: H G
authors.initials: HG
authors.lastname: Baumgardt
authors.forename: B
authors.initials: B
authors.lastname: Baican
authors.forename: E
authors.initials: E
authors.lastname: Schopper
mesh_terms: D020450:Heavy Ions; D007091:Image Processing, Computer-Assisted; D007501:Iron; D018499:Linear Energy Transfer; D018715:Microscopy, Video; D009356:Neon; D009584:Nitrogen; D009686:Nuclear Physics; D010758:Phosphorus; D011874:Radiometry
chemical_list: D010758:Phosphorus; D009356:Neon; D007501:Iron; D009584:Nitrogen