IN9800957 BAKC/1997/P/004 s2o o 1 RADIOCHEMISTRY DIVISION BIENNIAL PROGRESS REPORT: 1995-1996 Compiled and Edited by B. S. Tomar, P. K. Pujari, J. N. Mathur, P. K. Mohapatra, M. S. Murali, V. Natarajan and M. L. Jayanthakumar Radiocheinistry Division 1997 BARC/1997/P/004 § GOVERNMENT OF INDIA O* ATOMIC ENERGY COMMISSION u < CO RADIOCHEMISTRY DIVISION BIENNIAL PROGRESS REPORT: 1995-1996 Compiled and Edited by B.S. Tomar, P.K. Pujari, J.N. Mathur, P.K. Mohapatra, M.S. Murali, V. Natarajan and M.L. Jayanthakumar Radiochemistry Division BHABHA ATOMIC RESEARCH CETNRE MUMBAI, INDIA 1997 BARC/1997/P/004 BIBLIOGRAPHIC DESCRIPTION SHEET F,DR TECHNICAL REPORT (as per IS : 9400 - 19S0) 01 Security classification : Unclassified 02 Distribution : External 03 Report status : New 04 Series : BARC External 05 Report type : Progress Report 06 Report No. : BARC/1997/P/004 07 Part No. or Volume No. : 08 Contract No. : 10 Title and subtitle : Radiochemistry Division biennial progress report: 1995-96 11 Collation : 130 p., figs., tabs. 13 Project No. : 20 Personal author (s) : B.S. Tomar; P.K. Pujari; J.N. Mathur; P.K. Mohapatra; M.S. Muralij V. Natarajan; M.L. Jayanthakumar (eds.) 21 Affiliation of author (s) a Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 22 Corporate author<s> : Bhabha Atomic Research Centre, Mumbai-400 08S 23 Originating unit : Radiachernistry Division, BARC, Mumbai 24 Sponsor<s> Name : Department of Atomic Energy Type : Government 30 Date of submission : October 1997 31 Publication/Issue date November 1997 contd. 40 Publisher/Distributer : Head, Library and Information Division, Bhabha Atomic Research Centre, Mumbai 42 Form of distribution : Hard Copy 50 Language o-f text : English 51 Language of summary : English 52 No. of references : refs. 53 Given data on : 60 Abstract : The research and development activities of Radiochemistry Division during 1995-96 are briefly described under the headings : (1) nuclear chemistry; (2) actinide chemistry; <3> spectroscopy and (4) instrumentation. Nuclear chemistry work deals with the areas of nuclear reactions, nuclear spectroscopy, nuclear probes And radiaanalytical techniques. The research programme in actinide chemistry centered on development of novel procedures for the separation of actinides, guest-host chemistry of lanthanides, actinides and fission products and extractants for solvent extraction. Spectroscopy section activities are summarised under (1) basic research in the solid state chemistry; (2) development of analytical spectroscopic methods for the trace metal determination in nuclear materials; (3) chemical quality control of plutonium 239, uranium 233 and thorium based nuclear fuels. Instrumentation group deals mainly with servicing and maintanance electronic instruments and allied systems A list of publications, by the scientific staff of the Divisions is also included. 70 Keywords/Descriptors : THORIUM COMPLEXES; URANIUM COMPLEXES; THORIUM; URANIUM; AMERICIUMj ANGULAR DISTRIBUTION; BARC; EXCITATION FUNCTIONS; FISSION FRAGMENTS; FISSION YIELD; HIGH-TC SUPERCONDUCTORS; NUCLEAR CHEMISTRY; NUCLEAR FUELS; PLUTONIUM OXIDES; PROGRESS REPORT; RADIATION EFFECTS; RESEARCH PROGRAMS; THORIUM OXIDES; URANIUM OXIDES 71 INIS Subject Category : B1300 99 Supplementary elements : CONTENTS Page No. 1 NUCLEAR CHEMISTRY 1 1.1 NUCLEAR FISSION 1 1.1.1 MASS DISTRIBUTION 1 1.1.1.1 Mass Distribution in 19F,nB and 12C induced fission of 232Th 1 1.1.1.2 Absolute Fission yields in the fast neutron fission ofactinides 4 1.1.2 CHARGE DISTRIBUTION 5 1.1.2.1 Charge distribution in 125 MeV 19F induced fission of232Th. 5 1.1.2.2 Systematics of charge distribution in low-energy fission of actinides 6 1.1.3 FRAGMENT ANGULAR MOMENTUM 8 1.1.3.1 Systematics of fragment angular momentum in low energy fission of actindes 8 1.1.3.1 Effect of odd-Zfissioning system on fragment angular momentum 10 1.1.4 MASS RESOLVED ANGULAR DISTRIBUTION 12 1.1.4.1 Mass resolved angular distribution in alpha induced fission of 24®Pu \2 1.2 NUCLEAR REACTIONS 14 1.2.1 Study of incomplete fusion in ^F + 93Nb reaction 14 1.2.2 Study of incomplete fusion in heavy ion reactions with heavy ions with A>20 16 1.2.3 Excitation functions in 37Cl + 45Sc 17 1.2.4 Angular Momentum distribution in subbarrier fusion of ^2C with &9Y 19 1.2.5 Recoil ranges of nuclei produced in alpha-induced reactions 20 1.3 NUCLEAR SPECTROSCOPY 22 1.3.1 K-captureprobability in the decay of 143Pm and 144Pm 22 1.3.2 Continuum electron capture decay rate of ?Be 22 1.4 NUCLEAR PROBES 23 1.4.1 Probing the microstructure ofnafion-117 using positron annihilation spectroscopy 23 1.4.2 Positron annihilation studies on tetragonal CaLaBaCujOfcsS superconducto 24 1.4.3 Low temperature phase transition in Nafion-117: a positron study 25 1.4.4 Surface Characterisation ofMFJ Type Zeolites Using Positron Annihilation Spectroscopy 26 1.4.5 Compton Scattering Studies in Niobium Carbide and Vanadium Carbide 26 1.4.6 Electron capture after effects of ^hn - l^Cd decay in semiconductors: Perturbed angular correlation study 27 1.5 RADIOANALYTICAL TECHNIQUES 28 1.5.1 Diffusion ofCs* andZn2* through Nafion-117 ion exchange membrane 28 1.5.2 KQNAA method for elemental analysis in various matrices 3 0 1.5.2.1 Multielemental analysis of natural ruby samples using Ko method 31 1.5.2.2 Study of Serpentines in the asbestos mines in the Cuddapah basin 33 1.5.2.3 Analysis of sediment samples 35 1.5.2.4 Multielement analysis of biological materials (leaves) 36 1.5.3 Solid State Nuclear Track Detectors (SSNTDs) 37 1.5.3.1. Measurement of alpha to fission branching ratio ofplutonium isotopes using SSNTDs 37 1.5.3.2 Estimation of uranium in solution medium using spark counting of alpha tracks in LR-115 38 1.5.3.3 Direct determination ofmicrogram quantities of uranium in organic phase by the fission track method 38 1.5.3.4 Effect of gamma irradiation on the thermal degradation of lexan polycarbonate polymer 39 1.5.3.5 Chemical etching of fission fragment tracks in Tuff ok polycarbonate nuclear track detector 39 1.5 .4 Radiochemicalseparations 40 1.5.4.1 Study ofanion exchange behaviour of Te and Sbfor the development of U8Te-U8sb generator 40 1.6 NUCLEAR DATA PROCESSING 41 1.6.1 Application of digital processing and Modified Discrete Fourier Transform to gamma and alpha spectrometry 41 2. ACTTNIDE CHEMISTRY 43 2.1 BASIC STUDIES « 43 2.1. 1 COMPLEXATION / SEPARATION OF LANTHANIDES AND FISSION PRODUCTS USING MACROCYCLIC LIGANDS 43 2.1.1.1 Thermodynamics and dissociation kinetics of the complexes ofYflll) with ionisable macrocyclic ligands 43 2.1.1.2 Extraction of cesium from nitric acid medium using substituted crown ethers 44 2.1.1.3 Extraction of strontium from nitric acid medium by 4,4 '(5') di-t-butylcyclohexano 18 crown 6 (DTBCH18C6) employing solvent extraction as well as extraction chromatographic methods 45 2.1.1.4 Role of 18 crown 6 on the extraction of lanthanumflll) andytterbium(III) in the presenceof l-phenyl-3-methyl-4-benzoyl-5-pyrazolone 47 2.1.2 AKUFVE STUDIES ON EXTRACTION OF NEPTUNIUM 49 2.1.2.1 AKUFVE studies on extraction behaviour of neptunium in 30% TBP 49 2.1.3 PYRAZOLONES AND ISOXAZOLONES AS NOVEL EXTRACTANTS 51 2.1.3.1 Separation of americiumQH) from nitric acid medium using 3-phenyl-4-benzoyl-5- isoxazolone 51 2.1.3.2 Extraction of thorium(TV) by a mixture ofl-phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) and tri-n-octylphosphine oxide (TOPO) 53 2.1.4 EXTRACTION STUDIES WITH CMPO 54 2.1.4.1 The extraction behaviour off-elements and yttrium with octylfphenyl)- N,N- diisobutylcarbamoylmethylphosphine oxide (CMPO) 54 2.1.4.2 Utilization offerrocyanide ion for stripping ofactinides and lanthanidesfrom CMPO phase and aqueous complexing of these metal ions with ferrocyanide ion 56 2.1.5 NOVEL EXTRACTANTS FOR U(VI) AND Pu(IV) 57 2.1.5.1 Influence of the nature of some organic diluents on the extraction ofU(VI) andPu(IV) by tri-iso-amylphosphate (TAP) from nitric acid solutions 5 7 2.1.5.2 Di(2-ethyl hexyl) butyramide anddi(2-ethyl hexyl) isobutyramide as extractantsfor Uranium(VI) and Plutonium (IV) 59 2.1.6 LIQUID MEMBRANE STUDIES 60 2.1.6.1 Development of liquid membrane processes for decontamination ofradiotoxic actinides from acidic wastes 60 2.1.7 POLYETHYLENE GLYCOL BASED AQUEOUS BIPHASIC SYSTEMS 61 2.1.7.1 Partitioning of americium(III) in a PEG based aqueous biphasic system in presence of phosphotungstic acid 61 2.1.8 INORGANIC ION EXCHANGERS 63 2.1.8.1 Characterization and applications of some inorganic exchangers for fission product separations 63 2.2 APPLIED WORK 65 2 2.1ACTINIDE PARTITIONING BY CMPO 65 2.2.1.1 Partitioning of actinides from HLWsolutions 65 2.2.1.2 Degradation, clean up and reusability of CMPO during partitioning of minor actinides from HLW solutions 67 2.2.2 NOVEL REAGENTS FOR URANIUM-THORIUM SEPARATION 70 2.2.2.1 Tris(2-ethylhexyl)phosphate anddi(2-ethylhexyl) isobutyramide: new extractants for U-Th separation 70 2.2.3 SYNTHESIS OF DIAMEDES AND AMIDES FOR ACTINIDE PARTITIONING AS WELL AS U-Th SEPARATION 71 2.2.3.1 Synthesis of pentaalkylmalonamides 71 2.2.3.2 Synthesis ofN.N'dialkyl amides 74 2.2.4 PROCESS ANALYTICAL SEPARATIONS USING PMBP 75 2.2.4.1 Extraction of Pu(TV) in PUREXprocess samples using apyrazolone 75 2.2.4.2 Recovery of plutonium from oxalate supernatant using l-phenyl-3-methyl-4-benzoyl-5- pyrazolone 77 2.2.6 RECOVERY OF PLUTONIUM AND AMERICIUM FROM LABORATORY WASTES 78 2.2.6.1 Recovery of plutonium from assorted aqueous acidic, alkaline and organic laboratory wastes 78 2.2.6.2 Recovery of plutonium and americium from laboratory acidic waste solutions using tri- n-octylamine and octylphenyl-N-N-diisobutyl carbamqylmethylphosphine oxide 79 3.