The purpose of this standard is to give, in table form, the quantities and units of nuclear reactions and ionizing radiation. When two symbols are given for the same quantity, without special dis inction, they can be used indifferently. SI units are given in bold; other units are given in common characters. The abbreviations "nI, de, en" mean "Dutch, German, Englis " respectively (is 639:1988). The definitions of the units are given in the NBN X 02-001 standard. SPECIAL REMARKS In this document, the term "particle" refers both to particles not having a rest mass and to particles having one. The dis ribution functions with respect to energy, speed, solid angle, etc., correspond to different quantities appearing in this document. The subscripts E, v and Ω are used as parts of the symbol to indicate that the quantity has the dimension of a derivative with respect to E, v and Ω, respectively. In general, these dis ribution functions are only mentioned in the "Definitions and remarks" column; see for example 12, 31 and 32. In the case of cross sections, some of these dis ribution functions have been given special names, and they appear in separate articles.
NBN X 02-110-1990 history
1990NBN X 02-110-1990 Quantifies and unit s of nuclear reactions and ionizing radiations