Solid-state track recorders

The second edition follows the same guidelines as the first—namely simplicity in writing and use of many examples. The main structural change is the elimination of Chap. 17 (Special Detectors and Spectrometers) and the relocation of the material in appropriate chapters. For example, rate meters and gas-filled detectors are now discussed in Chap. 5. Self-powered detectors are now included in Chap. 14 along with other neutron detectors. Chapter 16 deals with solid-state track recorders and thermoluminescent dosimeters. 

Gold R, Roberts JH, Ruddy F (1981) Annealing phenomena in solid state track recorders. Nucl Tracks 5 253-264... 

R. GOLD, R. J. ARMANI, and J. H. ROBERTS. Absolute Fission Rate Measurements with Solid State Track Recorders, Nucl. Sci. Eng., 34,13 (1968). 

The tracks formed can be directly observed by the naked eye in cloud and bubble chambers, but the tracks remain only for a short time before they fade. For a permanent record we must use photography. On the other hand, in solid state nuclear track detectors (SSNTD), of which the photographic emulsion is the most common variant, the tracks have a much longer lifetime during which they can be made permanent and visible by a suitable chemical treatment. Because of the much higher density of the absorber, the tracks are also much shorter and oft therefore not visible for the naked eye. Thus the microscope is an essential tool for studying tracks in solids. 

Aliev et al. reported the use of isothermal in situ solid-state NMR spectroscopy at 120, 130, and 140 °C to follow the synthesis of poly(hydroxyacetic acid) (polygly-colide) through the thermally induced solid-state polymerization reactions in sodium chloroacetate and sodium bromoacetate. Solid-state Na-NMR spectra recorded at 130 °C (in sodium bromoacetate) and 140°C (in sodium chloroacetate) were used to probe the sodium halogenoace-tate parent phase and the sodium halide (NaCl, NaBr) formed in the reactions. The experiments tracked the sodium ions as... 

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