ISO 12721:2000

Non-destructive testing — Thermal neutron radiographic testing — Determination of beam L/D ratio

Publication date: 6 pri 2000

General information

Current stage: 90.20 Effective date: 15 pri 2026

Originator: ISO

Owner: ISO/TC 135/SC 5

Type: International Standard

ICS: 19.100

Gjuha: anglisht frëngjisht

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Statusi: Publikuar

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Scope

This International Standard defines an empirical technique for the measurement of the effective collimation ratio
and effective L/D of thermal neutron radiography beams for values between 20 and 1 000. The technique is based
upon analysis of a neutron radiographic image and is independent of measurements and calculations based on
physical dimensions of the collimator system. The device described in this International Standard has been
developed and tested using Gd foil converters with a single emulsion, high resolution film in vacuum cassettes.

Life cycle

NOW

PUBLISHED
ISO 12721:2000
90.20 Standard under periodical review
15 pri 2026

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