منابع مشابه
The nuclear microprobe: a unique instrument
There are several features characterising high-energy ion interactions with matter which enables techniques which utilise the high-energy ion beam to have unique or advantageous characteristics. (i) The lack of primary particle bremsstrahlung enables Particle Induced X-ray Emission (PIXE) to be carried out with very little X-ray background, and therefore correspondingly high analytical sensitiv...
متن کاملNew Generation Nuclear Microprobe Systems
Over the past 20 years, the minimum probe size for nuclear microscopy has stayed around 1 micrometre. No breakthroughs in nuclear microprobe design have been forthcoming to produce dramatic improvements in spatial resolution. The difficulties of breaking the constraints that are preventing reduction of the probe size have been well recognised in the past. Over the past 5 years it has become cle...
متن کاملA Flexible Data Acquisition Board for Nuclear Detectors
For two-dimensional scintillation detectors based on position-sensitive photomultipliers, a new PCI or cPCI unit has been developed. It aims at fast signal and data processing by the usage of advanced technologies like digital signal processors and field-programmable gate arrays. The main features of this design are described in this paper. Digital test measurements were carried out showing tha...
متن کاملControl and data acquisition software for high-density CMOS-based microprobe arrays implementing electronic depth control.
This paper presents the NeuroSelect software for managing the electronic depth control of cerebral CMOS-based microprobes for extracellular in vivo recordings. These microprobes contain up to 500 electronically switchable electrodes which can be appropriately selected with regard to specific neuron locations in the course of a recording experiment. NeuroSelect makes it possible to scan the elec...
متن کاملThe mutual diffusion coefficient for (meth)acrylate monomers as determined with a nuclear microprobe.
The value of the mutual diffusion coefficient DV of two acrylic monomers is determined with nuclear microprobe measurements on a set of polymer films. These films have been prepared by allowing the monomers to diffuse into each other for a certain time and subsequently applying fast ultraviolet photo-polymerization, which freezes the concentration profile. The monomer diffusion profiles are stu...
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ژورنال
عنوان ژورنال: IEEE Transactions on Nuclear Science
سال: 1981
ISSN: 0018-9499
DOI: 10.1109/tns.1981.4331431