EN IS0 13304-2 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHE NORM December 2022 ICS 13.280; 17.240 English Version Radiological protection - Minimum criteria for electron paramagnetic resonance (EPR) spectroscopy for retrospective dosimetry of ionizing radiation - Part 2: Ex vivo human tooth enamel dosimetry (Is0 13304-2:2020) Radioprotection - Criteres minimaux pour la Strahlenschutz - Mindestanforderungen an die Elektronenspinresonanz (EPR-Spektroskopie) fur die spectroscopieparrésonanceparamagnétique électronique (RPE) pour la dosimétrie retrospective retrospektive Dosimetrie ionisierender Strahlung - Teil desrayonnementsionisants-Partie2:Dosimétrieex 2: Ex-vivo-Dosimetrie des menschlichen vivo a partir de I'émail dentaire humain (IS0 13304- Zahnschmelzes (IS013304-2:2020) 2:2020) This European Standard was approved by CEN on 18 December 2022. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhich stipulatetheconditionsforgivingthis European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENmembers arethenational standardsbodies of Austria,Belgium,Bulgaria, Croatia, Cyprus, CzechRepublic, Denmark, Estonia Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,Portugal,Republic ofNorth Macedonia, Romania, Serbia, Slovakia, Slovenia,Spain,Sweden, Switzerland, Turkiyeand United Kingdom. cen EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHESKOMITEEFURNORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels @2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13304-2:2022 E worldwide for CEN national Members. EN IS0 13304-2:2022 (E) European foreword The text of IS0 13304-2:2020 has been prepared by Technical Committee IS0/TC 85 "Nuclear energy, nuclear technologies, and radiological protection" of the International Organization for Standardization (IS0) and has been taken 0ver as EN IS0 13304-2:2022 by Technical Committee CEN/TC 430 “Nuclear energy, nuclear technologies, and radiological protection" the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2023, and conflicting national standards shall be withdrawn at the latest by June 2023. Attention is drawn to the possibility that some of the elements of this document may be the subject of Any feedback and questions on this document should be directed to the users' national standards body. AcompletelistingofthesebodiescanbefoundontheCENwebsite. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkiye and the United Kingdom. Endorsement notice The text of IS0 13304-2:2020 has been approved by CEN as EN IS0 13304-2:2022 without any modification Contents Page Foreword ..V Introduction ..vi 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Apparatus .5 4.1 Specifications for EPR spectrometer .5 .5 4.2 Spectrometer sensitivity 4.3 Microwave bridge. .5 4.4 ..5 Magnetic field. Microwave resonator 4.5 .6 5 Preparation of tooth enamel samples .6 5.1 General 5.2 Applicable grain size. .7 Measurement of the EPR spectrum. .7 6 6.1 Description of spectrum 6.2 Applicable measure