1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS A ISO 12789 2 2: KS A ISO 12789 2:2012 2012 12 12 http:/www.kats.go.krKS A ISO 12789 2:2012 : ( ) ( ) () ( ) : () () () ( ) () () () () ( ) () () : (http:/www.standard.go.kr) : :2012 12 12 2012-0698 : :() ( 02-509-7270) (http:/www.kats.go.kr). 10 5 , . KS
2、 A ISO 12789 2:2012 i ii . iii 1 1 2 .1 3 .4 4 .5 5 5 6 9 A( ) 12 14 KS A ISO 12789 2:2012 ii . . , , . , , . KS A ISO 12789 2:2012 iii 2008 1 ISO 12789 2, Reference radiation fields Simulated workplace neutron fields Part 2: Calibration fundamentals related to the basic quantities , . KS A ISO 1278
3、9 2:2012 2: Reference radiation fields Simulated workplace neutron fieldsPart 2: Calibration fundamentals related to the basic quantities 1 KS A ISO 12789 1 . . . , . . 2 , . 2.1 M 1 . , , , . 2 . ISO/IEC Guide 99:2007, 4.1 2.2 1 ( “ ” ), gn 9.806 65 m s 2 2 KJ 90 483 597.9 GHz V 1KS A ISO 12789 2:2
4、012 2 3 m 100.003 47 g 1 “ ” , . 2 . 3 0 . ISO/IEC Guide 99:2007, 2.12 2.3 dN da , dN da . (1) . aNdd= (1) SI m 2 . 2.4 d dt , d dt . (2) . taNt ddddd2= (2) 1 SI m 2 s 1 . 2 . 2.5 Ed E E dE , d dE , (3) . EEdd = (3) SI m 2 J 12.6 E,d E E dE d , d dE d , (4) . ddd2,EE= (4) SI m 2J 1sr 1KS A ISO 12789
5、 2:2012 3 2.7 10 mm H*(10) , ICRU 10 mm SI (J kg 1) , (Sv) . 2.8 10 mm Hp(10) 10 mm 1 SI J kg 1 (Sv). 2 ICRU report 47 , ICRU ICRU d . , Hp(10) ICRU 10 mm , (30 cm30 cm15 cm parallelepiped) hp,slab(10) . 2.9 h , H , (5) . Hh = (5) - h* hp,slab . 2.10 R . (6) “ ” MR = (6) (7) “ ” . HMRH= (7) M , H ,
6、. 2.11 KS A ISO 12789 2:2012 4 N , M . 2.12 R(E) E R 2.13 RH(E) E H R 2.14 2.15 3 E nE E, E h - - h*(E) E - hp,slab (E,) , E - H H*(10) 10 mm Hp(10) 10 mm Hp,slab(10) ICRU 10 mm kf M ( ) tr/ N Qn 2 R RH RH(E) , 2.13 R R (E) , 2.12 E KS A ISO 12789 2:2012 5 4 , (: ) . . , . , , , 1 . KS A ISO 8529 1
7、KS A ISO 8529 2 , KS A ISO 12789 1 , 2 . KS A ISO 12789 1 (H2O), (D2O), , , , . ( ) . ICRU 10 mm . A , . , , . Hp(10) , ICRU 10 mm . 5.4.2 . . , . . . , . 5 5.1 H*(10) Hp(10) . 4. , . 5.2 KS A ISO 12789 2:2012 6 . 1. . . 10 . . . MeV . , . ( , :STAYSL, MAXED, SAND II, GRAVEL, LOUHI, BUNKI) . RSICC N
8、EA . , . 1 . , . ( ) ( 50 keV 20 MeV) / . - ( 10 keV 1 MeV) , 50 keV . , . 1,3. , . 6 4, . . . . MCNPTM1) . . (: 5) . 4. , 1)MCNPTM . . KS A ISO 12789 2:2012 7 ICRU 10 mm . 5.3 H*(10) E( ) . (operational quantity) h* , (8) . *)10(* hH = (8) =EEEEhhd)(* (9) E: h*(E) : E . A - 4 , . 5.4 Hp,slab(10) 5.
9、4.1 Hp,slab(10) . . Hp,slab(10) . . , (5.4.2) . (5.4.3) ( ) . , A . 5.4.2 . ( , ICRU 10 mm ) . 2 LET , (10) 6. EgEEEkEQHEEEEd)1)(d)()()10(trnnfnnslapp,nn += (10) nE : Qn: 2 7kf: KS A ISO 12789 2:2012 8 E: tr/ : g : (bremsstrahlung radiation) 2 5.4.3 , , A , - . / , . . (11) hp,slab . Hp,slab(10); (1
10、1) =EEEEhhdd),(,slabp,slabp, (12) E,: hp, slab (E,) : A E - - (log-log four point Lagrangian) . 5.5 , , . . 2 . 2 . . . 2 , , Geiger Mller 1. 5.6 , . . . KS A ISO 12789 2:2012 9 . 5.7 , . , . , . , , . . , . 1 , . . (cross check) , . , . , . , . 6 6.1 ( ) . ISO/IEC Guide 98 8. (coverage factor) k 1 k 2 . ( ) 68 %, 95 % . k 1 . 6.2 6.2.1 6.2.6 .