SCALE Software Coordinator
This topic has been migrated from the SCALE 6 notebook.
Date: Fri May 21 11:49:45 2010
Hello!
The N-16 photon yield of SCALE6 is different from that of other sources such as atom.kaeri.re.kr website.
There are greatly high yield below 1 MeV according to the N-16 photon yield of SCALE6.
But there are few yield below 1 MeV according to atom.kaeri.re.kr website
The following photon yield is from "http://atom.kaeri.re.kr/cgi-bin/decay?N-16%20B-"
N-16 Total E/disintigration = 4.49E+00
Energy Intensity
[KeV] [%]
787.20 3.00E-06
867.70 2.10E-04
986.93 0.0034
1067.50 3.00E-05
1754.90 0.121
1954.70 0.038
2741.50 0.82
2822.20 0.13
6048.20 0
6128.63 67
6915.50 0.038
7115.15 4.9
8869.30 0.076
If you know the reason of difference please let me know.
Young Tae Han
SCALE Software Coordinator
Dear Tae Han
Below is the x-ray and gamma ray line data used for n-16 (from text file mpdkxgam.data) which is derived from ENDF/B-VI evaluations. The major lines and total energy appear consistent with the KAERI evaluated data. The low energy photons in the ORIGEN spectrum are likely bremstrahlung (e.g., see brem library mphbruo2m.data). The master photon library on unit 26 has bremstrahlung added for a uo2 matrix. If you want the spectrum without bremstrahlung, you can read unit 23 (maphnobr). Unit 24 has bremstrahlung for betas in water.
I hope this addresses your questions.
Sincerely
Ian Gauld
5.1100E-012.3000E-038.6770E-011.0000E-079.8693E-013.4000E-05
1.7549E+001.2100E-031.9547E+003.8000E-042.7418E+008.2400E-03
2.8222E+001.3000E-056.1286E+006.7000E-016.9155E+003.8000E-04
7.1151E+004.9000E-028.8693E+007.6000E-04