1、Designation:E230403(Reapproved 2011)Standard Practice forUse of a LiF Photo-Fluorescent Film Dosimetry System1This standard is issued under the fixed designation E2304;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the handling,testing,and procedurefor using a lithium fluoride(LiF)-based photo-fluorescent filmdosimetry s
3、ystem to measure absorbed dose(relative to water)in materials irradiated by photons or electrons.Other alkalihalides that may also exhibit photofluorescence(for example,NaCl,NaF,and KCl)are not covered in this practice.Althoughvarious alkali halides have been used for dosimetry for yearsutilizing th
4、ermoluminescence,the use of photoluminescence isrelatively new.1.2 This practice applies to photo-fluorescent film dosim-eters(referred hereafter as photo-fluorescent dosimeters)thatcan be used within part or all of the following ranges:1.2.1 Absorbed dose range of 5 10-2to 3 102kGy(1-3).21.2.2 Abso
5、rbed dose rate range of 0.3 to 2 104Gy/s(2-5).1.2.3 Radiation energy range for photons of 0.05 to 10 MeV(2).1.2.4 Radiation energy range for electrons of 0.1 to 10 MeV(2).1.2.5 Radiation temperature range of-20 to+60C(6,7).1.3 The values stated in SI units are to be regarded asstandard.No other unit
6、s of measurement are included in thisstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulato
7、ry limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3E170 Terminology Relating to Radiation Measurements andDosimetryE275 Practice for Describing and Measuring Performance ofUltraviolet and Visible SpectrophotometersE925 Practice for Monitoring the Calibration of Ultraviolet-Visible
8、 Spectrophotometers whose Spectral Bandwidthdoes not Exceed 2 nm2.2 ISO/ASTM Standards:51204 Practice for Dosimetry in Gamma Irradiation Facili-ties for Food Processing51261 Guide for Selection and Calibration of DosimetrySystems for Radiation Processing51431 Practice for Dosimetry in Electron and B
9、remsstrahl-ung Irradiation Facilities for Food Processing51608 Practice for Dosimetry in an X-ray(Bremsstrahlung)Facility for Radiation Processing51649 Practice for Dosimetry in an Electron Beam Facilityfor Radiation Processing at Energies between 300 keV and25 MeV51702 Practice for Dosimetry in a G
10、amma Irradiation Facil-ity for Radiation Processing51707 Guide for Estimating Uncertainties in Dosimetry forRadiation Processing51818 Practice for Dosimetry in an Electron Beam Facilityfor Radiation Processing at Energies between 80 keV and300 keV51956 Practice for Thermoluminescence-Dosimetry(TLD)S
11、ystems for Radiation Processing2.3 International Commission on Radiation Units and Mea-surements(ICRU)Reports:4ICRU Report 14 Radiation Dosimetry:X-rays and Gammarays with Maximum Photon Energies Between 0.6 and 50MeVICRU Report 17 Radiation Dosimetry:X-rays Generated atPotentials of 5 to 150 kVICRU
12、 Report 34 The Dosimetry of Pulsed RadiationICRU Report 35 Radiation Dosimetry:Electron Beams withEnergies Between 1 and 50 MeVICRU Report 60 Fundamental Quantities and Units forIonizing Radiation1This practice is under the jurisdiction of ASTM Committee E61 on RadiationProcessingand is the direct r
13、esponsibility of Subcommittee E61.02 on DosimetrySystems.Current edition approved Nov.1,2011.Published November 2011.Originallyapproved in 2003.Last previous edition approved in 2003 as E2304-03.DOI:10.1520/E2304-03R11.2The boldface numbers in parentheses refer to the list of references at the end o
14、fthis standard.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.4AvailablefromInternationalCommissiononRadiationUni
15、tsandMeasurements,7910 Woodmont Ave.,Suite 800,Bethesda,MD 20814,USA.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.Terminology3.1 Definitions:3.1.1 absorbed dose,Dquantity of ionizing radiation en-ergy imparted per unit mass of a spec
16、ified material.The SI unitof absorbed dose is the gray(Gy),where 1 gray is equivalentto the absorption of 1 joule per kilogram of the specifiedmaterial(1 Gy=1 J kg-1).The mathematical relationship is thequotient of d by dm,where d is the mean incremental energyimparted by ionizing radiation to matter of incremental massdm(see ICRU 60).D 5ddm3.1.1.1 DiscussionAbsorbed dose is sometimes referred tosimply as dose.For a photon source under conditions ofcharged particle-equilibrium,the absorbed dose,