INDC(IND)-35G - IAEA Nuclear Data Services

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- 39 - 1w W.Scholfyssek et al.. Physics Investigations of Sodium Cooled Fast Reactors, SNEAK Assembly 9C, Report KFK 2361 (1977). 2. G.E.Hansen an
- 40 - The Program 'REX1 for Accurate Generation of Multigroup Infinite Dilution Cross Sections. Elastic and Inelastic Transfer Matrices and the Program 'RBX2* for Accurate Calculation of Self Shielding Factors in the Resolved Resonance Region for Fast Reactor Applications (V.Gopalakrishnan and S.Ganesan) 1 2 The computer programs REX1 and REX2 are two parts of RAMBHA , a nuclear data processing code system for fast reactor applications, developed at RRC to obtain multigroup cross u section data using the basio library in the ENDF/B-TV format. REX1: This program is intended for multigrouping point data available in the ENDF/B-IV format* The program expects the cross sections to be directly specified as point data without parameterization through resonance formalisms. If the actual cross sections are represented by a combination of resonance parameters and floor corrections in some energy region and as point data in other energy regions, then, one has to use the preprocessing codes LINEAR -RECENT before using REX1 for multigrouping. In addition to group cross sections, the program calculates the multigroup transfer matrices for elastic scattering by Bucholz' method and the multigroup transfer matrices for inelastic scattering by the method followed in MIGROS-3 8 . The program follows any interpolation scheme specified according to ENDF/B-XV conventions and uses Gauss' quadrature whenever numerical integrations are needed. Standard fast reactor flux spectra expressed in a functional form in various energy regions are utilised for weighting. REX2: The resolved resonance has been extended considerably for many isotopes of interest in reactor design by means of high resolution cross section measurements. The improved quality of data in the resonance region hes called for faithful multi-
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Page 5 and 6: PREFACE -i- CONTENTS I. HUCLEAR PIS
Page 7 and 8: -lii- II.8. Generation of Doppler b
Page 9 and 10: - 1 — I. NUCLEAR FISSION MASS. EN
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Page 13 and 14: - 5 - Cumulative yields cf rare-ear
Page 15 and 16: • 7 " laotoplc yield attribution
Page 17 and 18: - 9 _ Effeot of excitation energy o
Page 19 and 20: - 11 - Studies on fragaent angular
Page 21 and 22: - 13 - Stadias on fragment angular
Page 23 and 24: - 15 - Cumulative yielda of short-l
Page 25 and 26: - 17 - TABIE 1 Fission Products Yie
Page 27 and 28: HEUTRON CAPTURE CROSS -SECTION OF 2
Page 29 and 30: and extracted the value of E for ev
Page 31 and 32: - 23 - MDMIOROUP PHOTON INTERACTION
Page 33 and 34: - 25 - iBAHC35-A35 GROUP CROSS-SECT
Page 35 and 36: - 27 - 1. D.B. Cullen, SUMMIT of Pr
Page 37 and 38: - 29 - Generation of Activation Cro
Page 39 and 40: -31- (2) The emission of the first
Page 41 and 42: -33- iB level density parameter giv
Page 43 and 44: -34 A- References 1. M.L. Jhingan,
Page 45 and 46: - 36 - two multigroup Infinite dilu
Page 47: - 38 - Multigroup Constanta for Gal
Page 51 and 52: - 42 - The self shielding factor la
Page 53 and 54: - 44 - energy region particularly 3
Page 55 and 56: - 46 - COMPLOT : A Prorrain for Com
Page 57 and 58: Analysis of ZPR-9 Assembly 31. the
Page 59 and 60: - 50 - A Programme of Evaluation. P
Page 61 and 62: - 52 - Participation in IAEA Code V
Page 63 and 64: - 54 - Generation of Broad Group Er

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