BS EN ISO 20785-1:2017 pdf free.Dosimetry for exposures to cosmic radiation in civilian aircraft Part 1: Conceptual basis for measurements (ISO 20785-1:2012).
indication quantity value provided by a measuring instrument or a measuring system
Note 1 to entry: An indication can be presented in visual or acoustic form or can be transferred to another device. An indication is often given by the position of a pointer on the display for analogue outputs, a displayed or printed number for digital outputs, a code pattern for code outputs, or an assigned quantity value for material measures.
Note 2 to entry: An indication and a corresponding value of the quantity being measured are not necessarily values of quantities of the same kind.
2.1.4
reference conditions
conditions of use prescribed for testing the performance of a detector assembly or for comparison of results of measurements
Note 1 to entry: The reference conditions represent the values of the set o influence quantities for which the calibration result is valid without any correction.
Note 2 to entry: The value of the measurand may be chosen freely in agreement with the properties of the detector assembly to be calibrated. The quantity to be measured is not an influence quantity but may influence the calibration result and the response.
2.1.5
response
quotient of the indication, G, or the corrected indication, Gcorr, and the conventional quantity value to be measured
Note ito entry: To avoid confusion, it is necessary to specify which of the quotients, given in the definition of the response (to G or to Gcorr) is applied. Furthermore, it is necessary, in order to avoid confusion, to state the quantity to be measured, for example: the response with respect to fluence, R, the response with respect to kerma, RK, the response with respect to absorbed dose, RD.
Note 2 to entry: The reciprocal of the response under the specified conditions is equal to the calibration coefficient Ncoeg.
Note 3 to entry: The value of the response may vary with the magnitude of the quantity to be measured. In such cases the detector assembly’s response is said to be non-constani
Note 4 to entry: The response usually varies with the energy and direction distribution of the incident radiation. It is, therefore, useful to consider the response as a function, R(E,fl), of the radiation energy, E, and of the direction, c, of the incident monodirectional radiation. R(E) describes the energy dependence and R(fl) the “angle dependence” of response; for the latter, c may be expressed by the angle, a, between the reference direction of the detector assembly and the direction of an external monodirectional field.BS EN ISO 20785-1 pdf free download.
Tags: Dosimetry for exposures to cosmic radiation in civilian aircraft
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