全部文献期刊会议图书|学者科研项目
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作者:V Kumar , S C Varma ...
来源:[J].Pramana(IF 0.562), 1978, Vol.11 (4), pp.479-489Springer
摘要:Abstract(#br)The pseudo-rapidity distribution has been studied for 50 GeV/c π − -colliding with various groups of target nuclei in emulsion. These data are compared with the published data on p-A collisions. It is observed that leading component multiplicity in π − -Em ...
作者:V Kumar , N S Verma ...
来源:[J].Pramana(IF 0.562), 1980, Vol.15 (3), pp.309-326Springer
摘要:Abstract(#br)The momenta and rapidity characteristics of the particles produced in 50 GeV/ c π − -collision with emulsion nuclei have been studied with an emulsion stack exposed under a pulsed magnetic field. The longitudinal rapidity plots suggest that leading pion is atten...
作者:V Kumar , S N Chatterjee , B N Roy
来源:[J].Pramana(IF 0.562), 1990, Vol.34 (5), pp.447-460Springer
摘要:Abstract(#br)K- and L-shell ionization cross sections of gold due to impact of proton and alpha particles have been calculated in the binary encounter approximation incorporating the effects of Coulomb deflection of the projectile, of increase in binding of the target electron, a...
作者:V Kumar , B N Roy , D K Rai
来源:[J].Pramana(IF 0.562), 1992, Vol.38 (1), pp.77-90Springer
摘要:Abstract(#br)We have calculated total and differential cross-sections for 1 s → ns ( n = 2, 3, 4) electron impact excitation of hydrogen and hydrogenic ions at various energies in Coulomb-projected Born approximation. Distortion due to static interactions, target polarizatio...
作者:V Kumar
来源:[J].Pramana(IF 0.562), 2007, Vol.68 (2), pp.141-142Springer
作者:V Kumar , S Ranganathan
来源:[J].Bulletin of Materials Science(IF 0.584), 2003, Vol.26 (1), pp.1-2Springer
作者:... U P Verma , A N Pandey , V Kumar
来源:[J].Pramana(IF 0.562), 1977, Vol.8 (1), pp.36-39Springer
摘要:Abstract(#br)Electron diffraction data have been used as a constraint in the determination of force field for Tl 2 F 2 having planar rhombic structure. The L-F approximation method, recently given by us, has also been applied to evaluate force constants for thallous halide dimers...
作者:V Kumar , M Husain
来源:[J].Pramana(IF 0.562), 1981, Vol.17 (2), pp.187-192Springer
摘要:Abstract(#br)A possible explanation is given of the chemical shifts of x-ray K-absorption edges of metals when they undergo a chemical combination and form compounds. It is proposed that when a metal forms a compound its Fermi edge changes. It explains the numerical order as well...
作者:R N Pande , V Kumar , D R Chaudhary
来源:[J].Pramana(IF 0.562), 1983, Vol.20 (4), pp.339-346Springer
摘要:Abstract(#br)The weighted geometric mean of resistors considered for determining the effective thermal conductivity K E of two-phase systems has been optimised. Solutions of the equations lead to a useful set of bounds. When compared with other bounds the present bounds give the ...

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