Results 241 to 250 of about 261,370 (287)
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International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1986
Abstract The time dependence of the track response of Bristol CR-39 to alpha-particles is investigated. The behaviour of the plastic with time is of importance in low-level alpha activity applications such as lung alpha-autoradiography which requires CR-39 to be stored for long periods of time, and in neutron spectrometry where the accumulation of ...
T Portwood, DL Henshaw, J Stejny
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Abstract The time dependence of the track response of Bristol CR-39 to alpha-particles is investigated. The behaviour of the plastic with time is of importance in low-level alpha activity applications such as lung alpha-autoradiography which requires CR-39 to be stored for long periods of time, and in neutron spectrometry where the accumulation of ...
T Portwood, DL Henshaw, J Stejny
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Radiation Protection Dosimetry, 2023
Abstract CR-39 (PADC) nuclear track detectors are among the most widespread devices used for personal neutron dosimetry; however, some issues related to the variable material quality of the CR-39 polymer hinder the performance of CR-39-based dosemeters. For this reason, the Working Group 2 (WG2) of the European Radiation Dosimetry Group (
Matteo Bolzonella +4 more
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Abstract CR-39 (PADC) nuclear track detectors are among the most widespread devices used for personal neutron dosimetry; however, some issues related to the variable material quality of the CR-39 polymer hinder the performance of CR-39-based dosemeters. For this reason, the Working Group 2 (WG2) of the European Radiation Dosimetry Group (
Matteo Bolzonella +4 more
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Electrochemical etching of CR-39
Nuclear Tracks, 1981ABSTRACT An extensive study of the ECE of CR-39 has been carried out. The influence of various parameters such as temperature, reagent concentration, frequency, field strength, pre-etching… is reported.
Lferde, Z., Monnin, M.
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International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1986
Abstract Studies have been performed to determine the proton response of several types of CR-39 used at the University of San Francisco. Detectors were exposed to monoenergetic beams of protons of energy 7.2–16 MeV, both at normal incidence and at varying dip angles.
K. Ogura +3 more
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Abstract Studies have been performed to determine the proton response of several types of CR-39 used at the University of San Francisco. Detectors were exposed to monoenergetic beams of protons of energy 7.2–16 MeV, both at normal incidence and at varying dip angles.
K. Ogura +3 more
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Durability of Coated CR-39 Industrial Lenses
Optometry and Vision Science, 2003To study the effect of coatings on the resistance of CR-39 industrial plano lenses to ballistic impacts and abrasion from fine particles.Twelve groups of CR-39 lenses with various scratch-resistant (SR) or combinations of scratch-resistant and antireflective (SR-AR) coatings were mounted in metal industrial spectacle frames.
B Ralph, Chou, Jeffery K, Hovis
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Radiographic characteristics of CR-39 detector
Nuclear Tracks, 1981ABSTRACT Two parameters, signal-exposure and spatial resolution characteristics, of radiography with CR-39 detector were investigated. The signal exposure characteristic was quoted in terms of optical density versus exposure, which was defined as the product of the average visible track area and track density.
R. Ilić +3 more
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136Xe and 197Au ion track registration response in CR-39 and CR-39 (DOP) detectors
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1994Abstract Samples of CR-39 and CR-39 (DOP) plastic track detectors were exposed to 136Xe ions (11.56 MeV n ) and 197Au ions (13.92 MeV n ) at an angle of 45° from UNILAC, GSI, Darmstadt, Germany, to study the track registration parameters, viz. variation of track length (L) with etching temperature (55°, 65°, 70° and 80°C) using 6N NaOH as
Ashavani Kumar, Rajendra Prasad
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Light particle discrimination using CR-39
International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1986Abstract A method of light particle identification is proposed to simplify measurements on the products of nuclear reactions. The method is based on etch pit radius measurements in the phase of track development Vgt1. An appropriate calibration for CR-39 is given. Application of the proposed method was made on the products of negative pion absorption
M. Zamani, S. Charalambous
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NEUTRON DOSIMETRY STUDIES USING CR-39 PLASTIC
Nuclear Tracks, 1981ABSTRACT The response of CR-39 plastic to monoenergetic neutrons when irradiated behind several different radiators has been studied using conventional pre-etching, followed by electrochemical etching, to reveal tracks as enlarged spots. The effects of varying the electrochemical-etching voltage and pre-etching time were also investigated.
K.G. Harrison, C.A. Perks
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