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INTS-mf—12647 1*4660 BHABHA ATOMIC RESEARCH CENTRE /—< HIGHLIGHTS'88 GOVERNMENT OF INDIA BHABHA ATOMIC RESEARCH CENTRE TROMBAY, BOMBAY-000 085. HIGHUGHTS'88 MARCH 1989 Published by Library & Information Services, Bhabha Atomic Research Centre, Trombay. Bombay - 400 085. Printed at, Sudarshan Art Printing Press. Bombay - 400 031. FOREWORD Work done in the Bhabha Atomic Research Centre covers a wide spectrum of activities ranging from basic research in physics, chemistry, and biology to applied research and development needed to provide support to the nuclear programme. Some of the work is in frontier areas such as high temperature superconductivity and inertial confinement fusion. A substantial part of the effort is related to nuclear power reactor technology and the different stages of nuclear fuel cycle. Basic and applied research in life sciences carried out at Trombay ranges from investigations on the origin of life to developing improved varieties of groundnut, rice, etc., and application of new techniques for speedier propagation of economically important plant species through the technique of tissue culture. As a part of the basic research, a number of sophisticated instruments such as neutron diffractometer and spectrometers are also being developed at Trombay. Development of new methods for fabricating fuel elements, setting up of highly sophisticated facilities to test complex reactor components, development of computational techniques in order to carry out theoretical investigations on the performance of reactor components, are all part of the work being done at Trombay. Though an account of the work being done at Trombay is given in the regular annual reports, BARC Highlights '88 presents a few selected topics and accomplishments during 1988.1 hope this report will be found useful and informative by the scientific community. P.K. Iyengar Director CONTENTS PHYSICAL SCIENCES Observation of Anomalous Behaviour in Deep Sub-Barrier Fission of Uranium 1 Equilibration of Collective Degrees of Freedom in Nuclear Fission 3 A New Type of Phase Transition 4 Quasicrystals of Exceptional Stability 6 Novel Technique for the Measurement of ken- of Highly Subcritical Systems 8 Pelletron Accelerator Completes Performance Tests 11 Use of Dynamic Programming Methods in the Physics Design of Reactor Cores 12 Development of Argon Ion Laser 13 Development of Optical Thin Film Devices for Lasers 15 Identification of Laser Photo-Ionization Features by Pump-Probe Technique 17 Laser Spectroscopic Studies of Alkali Vapours : Photoexcitation, Photodissociation 19 and Excitation Energy Transfer Time-of-Flight Analyser based on IBM-PC 21 Bhatsa Seismic Network 23 Palaeoclimatic Study of the Kashmir Valley Using Multielement Data and Pattern 24 Recognition Technique Very High Energy Gamma-Ray Signals from CYGNUS X-3 and AM-HERCUL1S 25 A Quasi-Molecular Heavy Ion Resonance at High Excitation in 28Si. 27 REB-Plasma Interaction Studies with KALI-200 System 28 Transport of Gigawatt Pulsed Relativistic Electron Beams in Low Pressure Neutral 30 Gases Automated and Remotised Ultrasonic Testing Systems 32 33 High-Tc Superconductors : How Different from the Conventional? High-Temperature Oxide Superconductors 35 High Temperature YBa2Cu3Ox Superconducting Wires 38 CHEMICAL SCIENCES Study of Fast Reactions with Electron Accelerator 39 Zr-Fe-H System : New Hydride Phases 41 FeTi as a Catalyst for Hydrogenation Reactions 42 Molecular Beam Chemiluminescence 43 Removal of Turbidity by a Chemical Method from Moderator / Coolant of Dhruva 44 Reactor Sol-Gel Process and SGMP Route for Fabrication of Ceramic Nuclear Fuels 46 Synergistic Extraction of Actinides 50 Ultratrace Analysis Facility for Characterisation of Pure Materials 51 MATERIALS AND MATERIALS SCIENCE Extraction Process Developments for Calcium, Tantalum and Boron 53 Tin Extraction from Indian Cassiterite 54 Production of "Grogs" from Beach Sand Sillimanite 55 Diffusion in Amorphous Alloys Diffusion Bonding of Zircaloy-2 with Stainless Steel Fracture and Fatigue Research Optimization of Fabrication Parameters of Zr-25 Nb Pressure Tubes In Service Microstructural Stability of Inconel 625 Shape Memory Alloys Special Ceramics Materials Development Beryllium Pilot Plant & Development of Beryllium Technology Upgrading Plant for HWP (Thai) Goes on Stream RADIOISOTOPES Enzyme Immunoassay (EIA) A Novel 99Mo-99mTC Generator Immuno Radiometric Assay of TSH Development of Neonatal Thyroxine (T4) RIA for Dried Blood Samples on Filter Paper JONAKI-Labelled Biomolecules Laboratory. Hyderabad High Resolution Radiography A New Industrial Radiography Technique : Development from the New Concept of Spectral Superimposition and Technique Modalities Groundwater Salinity Studies using Environmental Isotope Geochemistry REACTORS. Graphics in Structural Analysis A New Design for Blow-out Panels Development of an Automatic Resistance Welding System for Fuel Rod Production Experimental Studies on Model Containment to Evaluate PHWR Containment Response during Maximum Credible Accident Compact Mechanical Snubber for PHWR Coolant Channels Rehabilitation of Raps I End Shield IAEA Sponsored Standard Problem Exercise A New Finite Element with Two Singular Points for the Analysis of Kinked Cracks Dynamic Analysis of the PHT System of a PHWR Following Power Failure Improved Reload Patterns for Tarapur Reactors MAPS Load Rejection Test-Analysis of System Behaviour and Comparison with Test Data Kamini Reactor Pressure Tube Gauging Equipment Computer Control of Fuel Handling System for On-Power Refuelling of PHWR-type Nuclear Reactors Dhruva Operates at Rated Power FUEL CYCLE An Integrated Process Flc-vsheet for Recovery of Uranium Values from Copper 105 Tailings Beneficiation of Low Grade Tungsten Ore from Degana. Rajasthan 106 Evolution of the Mundwara Alkali-Carbonatite Igneous Complex, Rajasthan 107 Uranium-233 Based Alloy Fuel for Kamini Reactor 108 Production Trials with Double Dished UO2 Pellets and Depleted UO2 110 Post-irradiation Examination of Dhruva Fuel 111 Reducing the Complexity and Cost of Reprocessing 112 Computer Adds a New Dimension to the Operation of Reprocessing Plants 113 Trombay Reprocessing Plant Crosses Yet Another Milestone 114 Kalpakkam Reprocessing Plant Project Makes Steady Progress 115 Tarapur Fuel Reprocessing Plant Meets the Additional Plutonium Requirement 116 for Fast Breeder Test Reactor (FBTR) Fluid-Bed Technology Development for Radwaste Treatment 117 RADIOLOGICAL SAFETY AND PROTECTION A New Dosimetric Technique for Radiation Processing Plants 118 A Microprocessor Based Water Phantom Dosimetry System for Radiation Field 120 Analysis of 60Co and Accelerator Beams PC Based Isodose Curves for NPP Sites 121 Background Radiation Measurements 122 A Novel X-ray Transmission Ionization Chamber Dosemeter for Patient Dose 124 Measurements in Diagnostic Radiology Biological Dosimetry for Assessment of Radiation Exposure 125 Bio Kinetics of Radionuclides 126 ELECTRONICS AND INSTRUMENTATION. Free Space Laser Communication Link 128 Video Frame Processor 130 Photon Counting System 131 Phonetic Code System for the Identification of Indian Citizens 132 Integrated Hospital Information System for Tata Memorial Hospital 134 Performance of Remote Back-up Relays in Interconnected E.H.V. Systems 136 A Microprocessor-Based Remote Environmental Dose Logging System Using VHF 137 Telemetry Text Processing in Devanagari 138 A Microprocessor Based X-ray Quality Assurance Dosimeter Using a Photovoltaic 139 Detector A Position-Sensitive Detector Based Neutron Diffractometer 140 Physical Protection System for Nuclear Installations 142 Ultrasonic Imaging Instrumentation 143 Expert System for Reactor Instruments' Maintenance 145 Nuclear Instrumentation for Kamini Reactor 147 BARC Dry Aerosol Generation / Inhalation System 149 IBM-PC Based Advanced 8K Multichannel Analyser 150 Image Analysis System 152 Meteorological Data Processor 153 HPD 4 K Multi-Channei Analyser 154 CAMAC Instrumentation 155 Portable Processor 156 A Microprocessor Based Air Analyser for Sub Parts per Billion Level Measure- 157 ments of Hydrogen Peroxide ENGINEERING SERVICES . Design and Development of Precision Goneometers for Neutron Spectrometers 159 Fabrication of Hadron Calorimeter Chambers for LEP 160 Design and Development of a Remote Tool for Cutting Thick Walled Tubes 161 Explosive Welding of Tube to Tube Plate 162 E.B. Welding of R.F. Resonator Assembly in OFHC Copper 163 Fabrication of Inconel Catalyst Tubes for Heavy Water Project 164 New Remote Handling Systems to Reduce the Hazards of Handling Radioactivity 165 LIFE SCIENCES— Genetic Transformation with Chimeric Plasmid DNA in Haemophtlus Influenzae : 166 Requirement for Recombination Amplification and Deamplification of DNA in Escherichia coli 167 Cloning and Characterization of a DNA Repair Gene in Haemophtlus influenzae 168 Isolation of Large Plasmids from Rhlzobtum meliloti 169 Initial Interactions in the Legume-Rhizobium Symbiosis 170 Construction of Pulse Field Gradient Gel Electrophoresis System for Separation of 171 Large DNA Molecules Computerised Genetic Sequence Databank 172 Structure Function Relationship of Ribulose Bisphosphate Carboxylase 173 Peripheral Micronucleated Erythrocytes : A Simple and Rapid Measure of Chromo- 174 somal Damage in Laboratory Mice Transmissible Genetic Damage Following Paternal Post-meiotic Exj. ..sure of Swiss 175 Mice Flow Cytometric Analysis of Testicular Cells shows Absence of Haploid Cells in 176 Severe Vitamin-A Deficient Rats Restriction Fragment