Prof. Barun Kumar Chatterjee

 

Recent Submissions

  • Size distribution of drops in superheated drop detectors 

    Sarkar, R.; Chatterjee, Barun Kumar; Roy, Biva; Roy, Suprakash C. (PERGAMON-ELSEVIER SCIENCE LTD, 2004-10-01)
    [No abstract available]

  • Viscosity divergence and gelation 

    Chatterjee, Barun Kumar; Roy, Suprakash (PERGAMON-ELSEVIER SCIENCE LTD, 2005-12-01)
    A new model of gelation is presented in which the viscosity is observed to diverge without the introduction of shear elasticity when a critical concentration of suspended particles is reached. This viscosity divergence ...

  • Investigations on compton scattering: New directions 

    Chatterjee, Barun Kumar; LaJohn, L.A.; Roy, S.C. (PERGAMON-ELSEVIER SCIENCE LTD, 2006-12-01)
    Although inelastic (Compton) scattering of a photon off a free electron was well understood about 80 years ago, inelastic scattering off bound electrons remains an incompletely understood process. The availability of ...

  • Radiation detection by using superheated droplets 

    Sarkar, R.; Chatterjee, Barun Kumar; Roy, B.; Roy, S.C. (PERGAMON-ELSEVIER SCIENCE LTD, 2006-11-01)
    The superheated emulsion, a radiation detector consisting of superheated droplets dispersed in a gel or a solid matrix, has been in use for some time now. It was initially designed to detect neutrons but also has been ...

  • Ion Mobility Studies of Electronically Excited States of Atomic Transition Metal Cations: Development of an Ion Mobility Source for Guided Ion Beam Experiments 

    Iceman, C.; Rue, C.; Moision, R. M.; Chatterjee, Barun Kumar; Armentrout, P. B. (Elsevier B.V, 2007-07-01)
    The design of an ion mobility source developed to couple to a guided ion beam tandem mass spectrometer is presented. In these exploratory studies, metal ions are created continuously by electron ionization of the volatile ...

  • Asymmetry and the shift of the Compton profile 

    Chatterjee, Barun Kumar; Roy, S. C.; Suric, T.; LaJohn, L. A.; Pratt, R. H. (ELSEVIER SCIENCE BV, 2007-09-21)
    We show that the conventionally defined asymmetry of the Compton profile (CP) is, to a large extent, simply a shift of CP. Compton scattering is widely used in studying the electron momentum distribution (EMD) of complex ...

  • Limitations on the validity of impulse approximation in Compton scattering 

    Pratt, R. H.; LaJohn, L. A.; Suric, T.; Chatterjee, Barun Kumar; Roy, S. C. (ELSEVIER SCIENCE BV, 2007-08-01)
    The validity of impulse approximation (IA), which is commonly used in the description of Compton scattering of photons from atomic electrons, is discussed with particular attention to the kinematical region in which the ...

  • Observation of second metastable state in superheated emulsion detector 

    Sarkar, R.; Mondal, P. K.; Chatterjee, Barun Kumar (ELSEVIER SCIENCE BV, 2008-08-11)
    The superheated emulsion detector (SED), a well-known detector for neutrons, ions, electrons and photons. contains droplets of superheated liquid held in a viscoelastic gel. It is well known that these droplets are in a ...

  • An active device for volumetric measurement of drop nucleation in a superheated emulsion detector 

    Mondal, P. K.; Chatterjee, Barun Kumar (IOP PUBLISHING LTD, 2008-10-01)
    An active volumetric device for active detection and measurement of drop nucleation of superheated emulsions is described. The drop nucleation is detected by an optical arrangement using a pair of a laser and a light-dependent ...

  • On the Nature of Matter – 2500 Years of debate 

    Chatterjee, Barun Kumar (Indian Science News Association, 2008-07-01)
    The ancient Greeks left an extensive record of discussion regarding the nature of matter, and the debate has continued ever since. The ideas of atoms and forces were not especially popular, and they were only fairly recently ...

  • ASCENT OF SAP 

    Chatterjee, Barun Kumar (Indian Science News Association, 2008-11-01)
    The enigmatic rise of water (sap) through the xylem of various plants has been a topic of active research and controversy for several decades. Various models like the vital theory models (viz. the pulsatile pumping model ...

  • Compton scattering revisited 

    Pratt, R. H.; LaJohn, L. A.; Florescu, V.; Suric, T.; Chatterjee, Barun Kumar; Roy, S. C. (PERGAMON-ELSEVIER SCIENCE LTD, 2010-02-01)
    We review the standard theory of Compton scattering from bound electrons, and we describe recent findings that require modification of the usual understanding. noting the nature of consequences for experiment. The subject ...

  • A new method for measurement of droplet size distribution in superheated emulsions 

    Mondal, P. K.; Sarkar, R.; Chatterjee, Barun Kumar (IOP PUBLISHING LTD, 2010-04-01)
    Superheated emulsion contains micron-sized superheated liquid droplets suspended in a host liquid medium. The superheated droplets nucleate to vapor bubbles when energetic radiation deposits a sufficient amount of energy ...

  • Measurement of droplet size distribution in superheated emulsion 

    Mondal, P.K.; Sarkar, R.; Datta, M.; Chatterjee, Barun Kumar; Roy, B.; Roy, S.C. (Elsevier B.V, 2009)
    Superheated liquids nucleate to vapour as a result of radiation induced phase transition. Superheated emulsion detectors have been developed using this property of superheated liquid. The emulsion is prepared by shearing ...

  • Two-state modeling of the superheated emulsion detector 

    Mondal, P. K.; Chatterjee, Barun Kumar (ELSEVIER SCIENCE BV, 2009-06-11)
    he non-monotonic nature of the decay of superheated emulsions, observed when it is periodically exposed to ionising radiations, indicates presence of multiple decaying species in the emulsion. A simple two-state model of ...

  • Threshold collision-induced dissociation of Sr2+(H2O)(x) complexes (x=1-6): An experimental and theoretical investigation of the complete inner shell hydration energies of Sr2+ 

    Carl, D. R.; Chatterjee, Barun Kumar; Armentrout, P. B. (AMER INST PHYSICS, 2010-01-28)
    The sequential bond energies of Sr2+(H2O)(x) complexes, where x=1-6, are determined by threshold collision-induced dissociation using a guided ion beam tandem mass spectrometer equipped with an electrospray ionization ...

  • Flow of binary gas mixtures through small sampling orifices 

    Johnsen, Rainer; Chatterjee, Barun Kumar (A V S AMER INST PHYSICS, 2011-01)
    Species-dependent density changes in binary gas mixtures flowing through a small thin orifice (thickness similar to 10% of diameter) have been studied experimentally using an ion drift tube, covering a limited range of the ...

  • Energy dependence of gamma detection efficiency for SED R-12 

    Sarkar, R.; Chatterjee, Barun Kumar; Roy, S.C. (ELSEVIER SCIENCE BV, 2010-07-01)
    Superheated emulsion detector consists of droplets of two metastable states, one with a much shorter life-time (second metastable state) than the other (normal metastable state). The SED made from R-12 (CCl(2)F(2)) is ...

  • Characteristics of acoustic emissions during nucleation of superheated droplets 

    Mondal, P.K.; Chatterjee, Barun Kumar (ELSEVIER SCIENCE BV, 2011-01-17)
    Superheated droplet nucleation and subsequent bubble oscillation produces an acoustic pressure pulse that contains valuable information about the nucleation process. Spectral analysis of the pressure pulse indicates ...

  • Nucleation Efficiency of R134a as a Sensitive Liquid for Superheated Drop Emulsion Detector 

    Das, Mala; Sarkar, R.; Mondal, P.K.; Saha, S.; Chatterjee, Barun Kumar; Roy, S.C. (Springer, 2010-10-01)
    Superheated emulsion detector is known to detect neutrons, γ-rays and other charged particles. The present work includes the study of nucleation efficiency of superheated drops of one of the CFC-free liquids, R134a (C 2H ...