Articles written in Pramana – Journal of Physics
Volume 1 Issue 6 December 1973 pp 247-259 Solids
The structure of the aminoacid, Ls-threonine [NH3+ CH(CHOHCH3)COO−], space group
Volume 10 Issue 3 March 1978 pp 289-302 Experimental Techniques And Instrumentation
The design and fabrication of an indigenous on-line computer controlled four-circle neutron diffractometer at the CIRUS reactor in Trombay are described. The diffractometer has an 18 in dia full-circle crystal-orienter which is sturdy enough to carry a cryostat. Three crystal orientation angles χ, φ and ω and the detector angle 2θ can be set to an accuracy of 0·01°. The four angle shafts are driven through precision worm-gears by SCR-controlled DC motors and their instantaneous positions sensed by optical digitizers. The diffractometer is interfaced to an ECIL TDC-312 computer system consisting of the CPU with 4K-memory, ASR-35 teletype, X-Y plotter and the digital input/output system (DIOS). The DIOS which operates under program control is a real-time peripheral device used to exchange information in digital form between the computer and the diffractometer. A software package consisting of over 40 useroriented teletype commands has been developed for on-line control and automatic data-acquisition.
Volume 24 Issue 1-2 January 1985 pp 245-258 Nuclear Physics
The phenomenology of the Pokaran
Volume 25 Issue 1 July 1985 pp 75-79 Solid State Physics
An experimental program has been started to study polymorphic phase transitions under pressure in organic solids using the Be gasketing technique developed by us. This allows us to obtain x-ray diffraction patterns of low symmetry organic solids with high resolution, employing CuK
Volume 27 Issue 6 December 1986 pp 835-839 Solid State Physics
X-ray diffraction experiments on
Volume 29 Issue 1 July 1987 pp 93-101 Condensed Matter Physics
Shock Hugoniot calculations are carried out for lead (Pb) using both solid and liquid state theories. The Hugoniots in solid and liquid cases are in mutual agreement within the experimental uncertainties. However, the shock temperatures are quite different as computed from solid and liquid state theories. This fact can perhaps be used to detect melting along the shock Hugoniot provided the shock temperatures are accurately measured.
Volume 31 Issue 6 December 1988 pp 519-522 Condensed Matter Physics
The results of electrical resistance (
Volume 35 Issue 2 August 1990 pp 177-180
AlPO4 has been compressed to pressures of 16 GPa in a diamond anvil cell and its X-ray diffraction pattern studied by the energy-dispersive technique. The compound is observed to become amorphous at ∼ 12 GPa. This explains the loss of Raman spectrum of AlPO4 reported by Jayaraman and coworkers (1987).
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