Fission Product Yield Data for the Transmutation of Minor Actinide ...

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FIG.4.5.2. Experimental relative mass yield Y(M), average total kinetic energy of fragments E k (M), and variance of kinetic energy s 2 E (M) for seven independent measurements of the 235 U + p (10.3 MeV) reaction. TABLE 4.5.1. AVERAGE TOTAL KINETIC ENERGY (Ek ), TOTAL KINETIC ENERGY VARIANCE (s 2 E ), AND MASS DISTRIBU- TION VARIANCE (s 2 M) AT PROTON ENERGY Ep = 10.3 MeV Compound nucleus E k (MeV) s 2 E (MeV)2 s 2 M (amu)2 233 Pa 163.8 95 494 234 Np 169.8 128 391 236 Np 168.9 128 391 237 Np 170.8 122 411 239 Np 169.3 125 410 239 Am 174.0 141 371 240 Am 173.7 140 372 241 Am 174.3 140 377 243 Am 175.5 141 373 245 Bk 177.6 156 366 189
190 TABLE 4.5.2. AVERAGE TOTAL KINETIC ENERGY (Ek), TOTAL KINETIC ENERGY VARIANCE (s 2 E ), AND MASS DISTRIBU- TION VARIANCE (s 2 M ) AT PROTON ENERGY Ep = 22.0 MeV Compound nucleus E k (MeV) s 2 E (MeV)2 s 2 M (amu)2 233 Pa 162.6 124 384 234 Np 167.2 157 318 236 Np 166.4 159 338 237 Np 166.8 147 342 239 Np 167.9 147 358 240 Am 173.6 169 322 241 Am 173.6 172 329 243 Am 173.7 174 334 TABLE 4.5.3. AVERAGED TOTAL KINETIC ENERGY (E k ), TOTAL KINETIC ENERGY VARIANCE (s 2 E), AND MASS DISTRIBUTION VARIANCE (s 2 M ) FROM FISSION OF 233 Pa Proton energy (MeV) E k (MeV) s 2 E (MeV)2 s 2 M (amu)2 7.4 164.5 85 520 12.5 163.0 107 460 13.5 162.8 108 440 16.5 163.7 108 451 18.0 163.2 115 429 20.0 162.9 119 401 24.0 162.2 126 390 26.0 162.2 126 387 28.0 161.4 135 378 30.0 161.3 137 370 TABLE 4.5.4. AVERAGE TOTAL KINETIC ENERGY (E k ), TOTAL KINETIC ENERGY VARIANCE (s 2 E), AND MASS DISTRIBU- TION VARIANCE (s 2 M ) FROM FISSION OF 236 Np Proton energy (MeV) E k (MeV) s 2 E (MeV) 2 s 2 M (amu) 2 7.4 170.3 110 445 12.5 168.0 139 386 13.5 167.6 141 375 15.0 167.1 146 367 16.5 167.1 149 356 18.0 167.8 153 352 28.0 166.1 164 326 30.0 166.0 164 323
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Fission Product Yield Data for the
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AFGHANISTAN ALBANIA ALGERIA ANGOLA
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COPYRIGHT NOTICE All IAEA scientifi
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CONTRIBUTING AUTHORS Denschlag, J.-
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3.2.1. Introduction . . . . . . . .
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6. BENCHMARK EXERCISE . . . . . . .
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However, this CRP entered an entire
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‘Provisional masses’ are determ
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Three scientists were invited to pa
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8 (d) Prompt or delayed neutron emi
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[2.1.40] ITKIS, M.G., OGANESSIAN, Y
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[2.1.96] PATE, B.D., et al., Distri
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[2.1.152] JACOBS, E., et al., Produ
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16 2.2. MEASUREMENTS OF THE ENERGY
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FIG. 2.2.3. 94 Sr: best experimenta
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FIG. 2.2.15. 132 Te: best experimen
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FIG. 2.2.27. 146 Ba: best experimen
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3. EVALUATIONS 3.1. ACTINIDE NUCLEO
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3.1.2. Statistical model At least t
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J Â K=-J 2 2 2 ^ sym Krot ( U, J)
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nuclei with N > 144. However, for h
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neutron number. The observed fissio
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FIG. 3.1.6. 235 U(n,f) fission cros
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FIG. 3.1.10. 237 Np(n,f) fission cr
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from higher fission chances [3.1.43
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[3.1.48] DUSHIN, V.N., et al., Stat
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where Y S is our new standard, and
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TABLE 3.2.2. EVALUATED REFERENCE FI
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TABLE 3.2.2. EVALUATED REFERENCE FI
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TABLE 3.2.3. EVALUATED REFERENCE YI
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TABLE 3.2.3. EVALUATED REFERENCE YI
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The comparisons of our evaluated da
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TABLE 3.2.4. COMPARISON OF RECOMMEN
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TABLE 3.2.8. COMPARISON OF THE UNCE
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REFERENCES TO SECTION 3.2 [3.2.1] I
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where N C , N U are the modified an
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activities were recorded with a pro
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3.3.4. Results and discussion The r
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FIG. 3.3.10. Li Ze et al. data: com
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96 Annex 3.3.1 EVALUATED EXPERIMENT
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Li Ze et al. [3.3.8] Thierens et al
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100 Annex 3.3.3 EVALUATED DATA SET
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The range of target nuclides availa
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condensation of cross-sections by t
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(h) REFERENCE (C,80KIEV,171,1980) i
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uncertainties of the calculation. T
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4. SYSTEMATICS AND MODELS FOR THE P
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FIG. 4.1.2. 235 U total cross-secti
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FIG. 4.1.9. Total and mode separate
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4.2. SYSTEMATICS OF FISSION PRODUCT
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A - = (PA - NT)/2 (4.2.1b) 4.2.2.3.
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FIG. 4.2.4(a). 238 U + 5.5 MeV n, L
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FIG. 4.2.8(a). U238 + 300 MeV p, LS
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TABLE 4.2.1. EQUATIONS FOR SYSTEMAT
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values (points) and the derived fun
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distributions. Values of N(A) seldo
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FIG. 4.2.19. Systematic Z P paramet
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FIG. 4.2.21. Systematic Z P paramet
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FIG. 4.2.23. Nuclear charge displac
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FIG. 4.2.24. Number of protons emit
Page 150 and 151: epresenting model values and thus s
Page 152 and 153: FIG. 4.2.36. n T(A) for CF249T. FIG
Page 154 and 155: FIG. 4.2.41. U235T, line: model; po
Page 156 and 157: The FAST subroutine in the CYFP pro
Page 158 and 159: [4.2.28] BELHAFAF, D., et al., Kine
Page 160 and 161: 4.3. FIVE GAUSSIAN SYSTEMATICS FOR
Page 162 and 163: Derived from measured data Fitted r
Page 164 and 165: FIG. 4.3.7. Mass distribution of 23
Page 166 and 167: FFIG. 4.3.12. Mass distribution of
Page 168 and 169: 4.4. PHENOMENOLOGICAL MODEL FOR FRA
Page 170 and 171: where = 2mE is the wavelength, E
Page 172 and 173: FIG. 4.4.4. Fragment mass distribut
Page 176 and 177: fragment mass distributions are des
Page 180 and 181: FIG. 4.4.10. Fragment mass distribu
Page 182 and 183: P LD È Ê * E - 44. 7ˆ ˘ = Í1 +
Page 184 and 185: FIG. 4.4.13. Pre-neutron emission m
Page 186 and 187: FIG. 4.4.15. Post-neutron emission
Page 188 and 189: FIG. 4.4.17. Post-neutron emission
Page 190 and 191: fragment mass and charge distributi
Page 192 and 193: of the energy dependence of the fus
Page 194 and 195: 4.5. MODAL APPROACH TO THE DESCRIPT
Page 196 and 197: This information was used for the p
Page 198 and 199: two neighbouring isotopes at differ
Page 202 and 203: Frequently, the yields Y i (M) are
Page 204 and 205: the nine optimum description parame
Page 206 and 207: TABLE 4.5.6. RELATIVE CONTRIBUTIONS
Page 208 and 209: TABLE 4.5.8. RELATIVE CONTRIBUTIONS
Page 210 and 211: Extracted values of s 2 M,S demonst
Page 212 and 213: FIG. 4.5.10. Fission fragment charg
Page 214 and 215: FIG. 4.5.12. Unchanged charge densi
Page 216 and 217: FIG. 4.5.16. Mass yield variance fo
Page 218 and 219: FIG. 4.5.20. Experimental mass yiel
Page 220 and 221: [4.5.24] GOVERDOVSKII, A.A., MITROF
Page 222 and 223: TABLE 4.6.1. FISSION PRODUCT YIELD
Page 224 and 225: TABLE 4.6.2. FIT PARAMETER VALUES O
Page 226 and 227: FIG. 4.6.2. Charge distributions fo
Page 228 and 229: model which is elucidated elsewhere
Page 230 and 231: the agreement is better. The observ
Page 232 and 233: inner barrier is much lower than th
Page 234 and 235: e determined in a self-consistent m
Page 236 and 237: FIG. 4.6.11. Overview of the coupli
Page 238 and 239: cross-section also has to be incorp
Page 240 and 241: FIG. 4.6.16. Same as Fig. 4.6.15, b
Page 242 and 243: FIG. 4.6.20. Pre-neutron emission m
Page 244 and 245: present have a reasonable contribut
Page 246 and 247: TABLE 4.6.5. ACCURACIES OBTAINED FR
Page 248 and 249: [4.6.7] BEIJERS, J.P.M., et al., Se
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5. NEW MODELS AND SYSTEMATICS: DEFI
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therefore his benchmark calculation
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mass distributions and practically
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5.2. BENCHMARK EXERCISE 5.2.1. Benc
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thorough and detailed analysis of t
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the fissioning nucleus and the numb
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should be undertaken — such a stu
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experimental method in order to der
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256 Valley heights and peak-to-vall
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FIG. 6.2.3. Benchmark exercise, par
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260 Wahl uncert. margins Wahl uncer
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264 Wahl uncert. margins (adj. Wahl
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Wahl (1.6-160 MeV): Distributions a
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TABLE 6.2.2. 238 U PRE-NEUTRON EMIS
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as most features are very similar t
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FIG. 6.2.14. Benchmark exercise, pa
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278 REFERENCES TO SECTION 6 [6.1] B
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As mentioned above, the mass distri
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I.3.2.6. Liu Conggui et al. [I.8] M
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after prompt-neutron emission, and
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286 Zöller (1995) 89-110 MeV, post
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(1) Data were linearly interpolated
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1. 290 Annex to Appendix I RECOMMEN
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1.2. E n = 5.5 MeV 292 Nagy et al.
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1.3. E n ª 8 MeV 294 Chapman (1978
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1.5. E n = 14-15 MeV 296 Daroczy et
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1.7. E n = 27.5 (22-33) MeV, Zölle
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1.9. E n = 99.5 (89-110) MeV, Zöll
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3. 302 239 Pu NEUTRON INDUCED FISSI
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Appendix II DATA ADJUSTMENT FOR MAS
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Vivès [II.8], Zöller [II.7] and
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Annex 1 to Appendix II ADJUSTED DAT
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Zöller (1995) [II.7] E n = 13 (11.
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E n = 50 (45-55) MeV Post-neutron e
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Äystö et al. (1998) [II.9] E p =
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E n = 1.60 MeV Pre-neutron emission
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E n = 27.5 (22-33) MeV Post-neutron
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E n = 99.5 (89-110) MeV Post-neutro
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Appendix III FISSION YIELD SYSTEMAT
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FIG. III.6. Dependence of chain yie
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TABLE III.2. Ln(y)-LINEAR(E) FIT CO
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FIG. III.14. Dependence of paramete
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FIG. III.26. Comparison of the mass
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FIG. III.38. Comparison of the mass
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TABLE III.3. QUADRATIC FUNCTION FIT
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Uncertainty ratio or uncertainty Ad
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CONTENTS OF THE CD-ROM The attached
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This publication reports on a coord
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