Dose-response parameters and microdosimetric quantity [3]

Neutrons
Neutrons
Laboratory Source Reference Types of Mean energy Linear term (Dics/cell/Gy)** Quadratic term (Dics/cell/Gy2)** Maximum RBE***
neutrons E (MeV) α/Gy ± S.E. Fixed at β=k=5.355×10-2 RBEm ± S.E.
1 HU-T(d,n)He K1 Monoenergetic 14.1 0.229 ± 0.020 5.355×10-2 14.136 ± 1.235
1 NIRS-Be(d,n)B K1, K2 Monoenergetic 2.03 0.566 ± 0.094 5.355×10-2 34.938 ± 5.802
1 KUR-Nth K2 Thermal 2.50E-08 0.920 ± 0.028 5.355×10-2 56.815 ± 1.747
1 TKY-GH K3, K4 Fission 1.354 1.197 ± 0.023 5.355×10-2 73.889 ± 1.432
1 TKY-TC K3, K4 Fission 0.477 1.219 ± 0.024 5.355×10-2 75.235 ± 1.506
1 TKY-MD K3, K4 Fission 0.009 1.164 ± 0.045 5.355×10-2 71.852 ± 2.778
1 TKY-BL K3 Fission (filtered) 0.21 1.237 ± 0.033 5.355×10-2 76.358 ± 2.006
1 TKY-M12 K3 Fission (filtered) 0.045 1.123 ± 0.039 5.355×10-2 69.296 ± 2.380
1 TKY-M27 K3 Fission (filtered) 0.017 1.056 ± 0.019 5.355×10-2 65.165 ± 1.186
1 KUR-U K4 Fission 1.985 1.172 ± 0.070 5.355×10-2 72.315 ± 4.314
1 KUR-B1 K3 Fission (filtered) 0.06 1.195 ± 0.019 5.355×10-2 73.740 ± 1.186
1 UTR-Air K3, K4 Fission 0.101 1.132 ± 0.044 5.355×10-2 69.888 ± 2.723
1 UTR-Bi K3 Fission (filtered) 0.138 1.028 ± 0.084 5.355×10-2 63.467 ± 5.214
1 UTR-Fe K3, K4 Fission (filtered) 0.196 0.992 ± 0.038 5.355×10-2 61.239 ± 2.374
1 UTR-PE K3, K4 Fission (filtered) 0.1 1.015 ± 0.078 5.355×10-2 62.644 ± 4.845
2 GSF-QM G1, G8 Quasimonoenergetic 0.144 0.786 ± 0.066 5.355×10-2 66.610 ± 5.593
2 GSF-QM G2, G8 Quasimonoenergetic 0.565 0.813 ± 0.052 5.355×10-2 68.898 ± 4.407
2 T(d,n) G3 Monoenergetic 14.5 0.204 ± 0.017 5.355×10-2 17.288 ± 1.441
2 T(d,n) G4 Monoenergetic 15.0 0.127 ± 0.025 5.355×10-2 10.763 ± 2.119
2 Nth G5 Thermal 2.50E-08 0.517 ± 0.023 5.355×10-2 43.814 ± 1.949
2 Q-M G6 Quasimonoenergetic 41 0.146 ± 0.016 5.355×10-2 12.373 ± 1.356
2 Q-M G6 Quasimonoenergetic 60 0.115 ± 0.026 5.355×10-2 9.746 ± 2.203
2 MEDAPP G7 Monoenergetic 1.9 0.332 ± 0.020 5.355×10-2 28.136 ± 1.695
2 7Li(p,n)7Be G8 Monoenergetic 0.036 0.664 ± 0.098 5.355×10-2 56.271 ± 8.305
2 7Li(p,n)7Be G8 Monoenergetic 0.385 0.935 ± 0.073 5.355×10-2 79.237 ± 6.186
2 T(p,n)3He G8 Monoenergetic 1.151 0.458 ± 0.041 5.355×10-2 38.814 ± 3.475
2 D(d,n)3He G8 Monoenergetic 4.85 0.320 ± 0.024 5.355×10-2 27.119 ± 2.034
2 T(d,n)4He G8 Monoenergetic 14.6 0.162 ± 0.015 5.355×10-2 13.729 ± 1.271
2 Fission G9, G8 Fission 1.6 0.400 ± 0.020 5.355×10-2 33.898 ± 1.695
2 Fission G10, G8 Fission 1.6 0.370 ± 0.020 5.355×10-2 31.356 ± 1.695
3 Filtered H1, H2 Filtered fission 0.024 0.821 ± 0.031 5.355×10-2 66.802 ± 2.522
3 Filtered H3 Filtered fission 0.024 0.872 ± 0.032 5.355×10-2 70.952 ± 2.604
3 Fission H4 Fission 0.7 0.835 ± 0.010 5.355×10-2 67.933 ± 0.838
3 Fission H4 Fission 0.9 0.728 ± 0.024 5.355×10-2 59.211 ± 1.912
3 Be(d,n) H-4 Monoenergetic 7.6 0.478 ± 0.033 5.355×10-2 38.885 ± 2.718
3 T(d,n) H-4 Monoenergetic 14.7 0.262 ± 0.040 5.355×10-2 21.286 ± 3.222
3 252Cf H-5 Fission 2.13 0.600 ± 0.010 5.355×10-2 48.820 ± 0.814
3 T(d,n) H-6 Monoenergetic 14.9 0.195 ± 0.018 5.355×10-2 15.867 ± 1.465
3 Fe filtered H-1 Filtered fission 0.024 0.759 ± 0.026 5.355×10-2 61.758 ± 2.116
4 Fission O-2 Fission 0.4 0.896 ± 0.069 5.355×10-2 75.932 ± 5.847
4 Fission O-1 Fission 0.21 1.216 ± 0.092 5.355×10-2 75.062 ± 5.660
4 d(16)+Be O-3 Quasimonoenergetic 6.5 0.416 ± 0.038 5.355×10-2 16.378 ± 1.476
4 d(33)+Be O-3 Quasimonoenergetic 14 0.184 ± 0.092 5.355×10-2 7.232 ± 3.638
4 d(50)+Be O-3 Quasimonoenergetic 21 0.139 ± 0.024 5.355×10-2 5.472 ± 0.961
*) [1]: RBC, Kyoto University, Japan (K). [2]: GSF, Munchen, Germany (G). [3]: NRPB, Harwell, UK (H). [4]: Other laboratories (O)
**) Dose-response of dicentrics was fitted to Y=(αg+βgDg)Dg+(αn+βnDn)Dn, βg=βn=k=5.355×10-2/Gy2. Subscript (g) denotes γ-rays and (n) denotes neutrons. Parameters were obtained by iteratively reweighted ML method.
***) Maximum RBE, RBEm=αn/αg. The linear term (αg) for reference radiation (60Co γ-rays) was obtained for the laboratory pooled data.
It was 0.0162/cell/Gy for RBC, 0.0118/cell/Gy for GSF and 0.0123/cell/Gy for NRPB. That of other laboratories was author dependent, where head-to-head experiment is performed for reference radiation.


References
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