Annual Report 1985-86

CONTENTS

PREFACE	v-viii
DIVISION OF STANDARDS
Physico Mechanical Standards
Standards of Length	1
Dimensional Metrology	2
Microscience Metrology	2
Standards of Mass, Volume & Density	2
Standards of Force & Hardness	3
Standards of Pressure	3
Standards of Vacuum	4
Standards of Temperature	5
Optical Radiation Standards	6
Infra-Red Radiation Standards	6
Standards of Acoustics	7
Ultrasonic Standards	7
Electrical & Electronic Standards
Standards of Time & Frequency	8
Standards of D C Electromotive Force. Resistance and Current	9
Capacitance. Inductance and AC Resistance Standards	9
A.C., L.F. & H.F. Standards	9
Microwave Standards of Power. Frequency, Noise Attenuation & Impedance	10
Josephson Voltage Standards	11
Low Dimensional Coulomb Systems	11
MATERIALS CHARACTERIZATION DIVISION
Characterisation of Materials Regarding Purity and Composition	12
Chemical Methods	12
FTIR Absorption and Uv-Visible Emission Spectroscopy	12
EPR Spectroscopy	13
Characterisation of Materials Regarding Crystal Structure	13
X-ray Diffraction Methods	13
Electron Microscopy and Electron Diffraction Techniques	14
Characterization of Materials Regarding Perfection	15
High Resolution Xray Diffractometric and Topographic Techniques	15
Surface Area and Porosity Measurements	16
MATERIALS DIVISION
Polycrystalline Silicon	17
Beta Alumina Tubes for Sodium Sulphur Battery	18
Ultrasonic Transducer Materials and Devices	18
Carbon-carbon Composites	19
Carbon Fibres	20
Glassy Carbons	21
Aviation Grade Brushes	21
Carbon Products	22
Luminescent Materials and Devices	22
RADIO SCIENCE DIVISION
Indian Middle Atmosphere Programme	23
Tropospheric and Ionospheric Communications	25
Sross Aeronomy Satellite	29
Radio and Atmospheric Physics	29
Atmospheric Chemistry	36
CRYOGENICS & SUPERCONDUCTIVITY
Cryogenic Systems and Devices	37
Superconductivity and Superconducting Materials	37
A-15 Superconductors Through in Situ Technique	38
Theoretical Investigations in Condensed Matter Physics (Exploratory)	39
APPLIED PHYSICS PROJECTS
Utilisation of Solar Energy-Thermal Conversion	40
Xero Radiography	40
Thin Film & Amorphous Materials	41
Display Devices	42
High Pressure Physics and Technology	44
SERVICE SECTIONS
Workshop	46
Glass Technology Workshop	46
Works and Services	46
Library	46
Computer Facility	47
Photography Section	47
APPENDICES
Papers Published	48
Research Reports	54
List of Govt. Deptts./Private Organisations which got Items Calibrated/Tested	57
Staff Strength	59
Personnel	60
Growth of Total Scientific Manpower	63
Visits Abroad	64
Patents	66
Premia & Royalties	67
Expedition to Antarctica	67
XIX General Assembly of I.A.U.	68
Receipts of Testing/Calibration Charges	69
Processes Released	69
Membership of Research Advisory Council	70
Membership of Executive Committee	71
Honours & Awards	71
Advice/Consultancy	72
Collaboration with other Institutions/Agencies	72
Symposia/Seminars/Workshops/Training Courses	72