Search Results - (Author, Cooperation:S. Bhattacharyya)

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  1. 1
  2. 2
    Saurabh K. Maurya, Partha P. Gopmandal, S. Bhattacharyya, and H. Ohshima
    American Physical Society (APS)
    Published 2018
    Staff View
    Publication Date:
    2018-08-07
    Publisher:
    American Physical Society (APS)
    Print ISSN:
    1539-3755
    Electronic ISSN:
    1550-2376
    Topics:
    Physics
    Keywords:
    Fluid Dynamics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  3. 3
    C. Long ; L. Amoasii ; A. A. Mireault ; J. R. McAnally ; H. Li ; E. Sanchez-Ortiz ; S. Bhattacharyya ; J. M. Shelton ; R. Bassel-Duby ; E. N. Olson
    American Association for the Advancement of Science (AAAS)
    Published 2016
    Staff View
    Publication Date:
    2016-01-02
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Animals ; *CRISPR-Cas Systems ; Dependovirus ; Disease Models, Animal ; Dystrophin/*genetics ; Exons/genetics ; Female ; Forelimb/physiopathology ; Genetic Therapy/*methods ; Genome/genetics ; Hand Strength ; Male ; Mice ; Mice, Inbred mdx ; Muscle, Skeletal/metabolism ; Muscular Dystrophy, Duchenne/genetics/*therapy ; Myocardium/metabolism
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  4. 4
  5. 5
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  7. 7
    Bhattacharyya, S., Hatua, K.
    Royal Society
    Published 2018
    Staff View
    Publication Date:
    2018-04-05
    Publisher:
    Royal Society
    Electronic ISSN:
    2054-5703
    Topics:
    Natural Sciences in General
    Keywords:
    physical chemistry, computational chemistry
    Published by:
    Latest Papers from Table of Contents or Articles in Press
  8. 8
    Latest Papers from Table of Contents or Articles in Press
  9. 9
    Banerjee, Sima ; Chakrabarti, M. K. ; Bhattacharyya, S. S. ; Saha, Samir

    College Park, Md. : American Institute of Physics (AIP)
    Published 1992
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    The generalized resonance enhanced two-photon dissociation (RETPD) cross sections of H2 are calculated for crossed and circular (same- and opposite-sense) polarizations of the two-photon fields using the reduced density operator formalism for the transitions X 1Σ+g(vg=0, Jg=0–4) →(ω1,εˆ1)VUVB 1Σ+u (C 1Πu)[vi=0, 3, Ji =0(1)–3]→(ω2,εˆ2)UV/visible [(EF+GK)1Σ+g+I 1Πg), Ef,Jf]. The wavelength (λ2) of the second photon is so chosen that ionization from the resonant B(C) state is energetically forbidden. The effects of polarizations on the wavelength and quantum number dependences of RETPD profiles have been studied. For vi=3 of both B and C states, a strong polarization dependence of RETPD cross sections is observed. The same- and opposite-sense circular polarizations have about the same RETPD profiles for the B state except at the shape resonance positions due to the final I state quasibound level, while the profiles are quite different for the C state.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  10. 10
    Datta, Banani ; Bhattacharyya, S. S.

    College Park, Md. : American Institute of Physics (AIP)
    Published 1991
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    The intensity dependent line shapes of resonant two photon dissociation process in HD+ from the 1sσg (v=6, J=0) are obtained at three different intensities (1.53×1010, 1.53×1012, and 6.12×1012 W/cm2 ) in the wavelength range 16 000–17 200 A(ring) using the resolvent operator formalism. The discrete state v=11, J=1 (1sσg) is the intermediate resonant state. The position of the resonance on the wavelength scale depends strongly on intensity. It is shown that for sufficiently strong fields the earlier semiperturbative theory formulated in analogy with Fano's theory of atomic autoionization breaks down near resonance due to saturation of the strongly coupled resonant transition. Also, when the dissociative transitions to both the electronic states 1sσg and 2pσu are considered simultaneously, the line shape is altered from that obtained by the superposition of the line shapes of these two transitions separately. The conditions under which a unique time independent transition rate is ill defined are discussed. For such situations the time dependent transition probabilities can be obtained from the effective Fano asymmetry parameters, and line shifts and widths of the ground and resonant states. The limiting transition rates for such cases for short and long pulse times are also shown.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  11. 11
    Banerjee, Sima ; Chakrabarti, M. K. ; Bhattacharyya, S. S. ; Saha, Samir

    College Park, Md. : American Institute of Physics (AIP)
    Published 1991
    Staff View
    ISSN:
    1089-7690
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Chemistry and Pharmacology
    Notes:
    The generalized resonance enhanced two-photon dissociation (RETPD) cross sections of H2 are calculated for linear parallel polarizations of the two photon fields. The reduced density operator formalism is used to study the wavelength and quantum number dependences for the transitions X 1Σ+g (vg=0, Jg=0–4) →vuv B 1Σ+u (C 1Πu) [vi=0,3, Ji=0(1)–3] →uv/visible [(EF+GK)1 Σ+g +I 1Πg, Ef, Jf]. By resonant absorption of the first photon an aligned population in the intermediate B(C) is created which is then dissociated by the second photon. The wavelength is so chosen that ionization from the resonant intermediate state is energetically forbidden. The contribution of the EF state to the total cross section is found to be negligible. The relative contribution of the GK and I states varies sharply with wavelength of the second photon and the resonant intermediate state. For both B and C states, dissociation through the I state is more prominent over a narrow range of wavelengths far from the dissociation threshold when the vibrational quantum number (vi) is large. For small vi the contribution of the I state is less. Due to the presence of a barrier above the dissociation threshold in the I state potential, narrow shape resonances occur. The cross sections at these shape resonances are a few orders of magnitude higher than the background. The detailed line shapes at these resonances have been presented for all the rotational quantum numbers considered for vi=0 and 3 of the B and C states.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  12. 12
    Goswami, Priyanka ; Bhattacharyya, S. N. ; Sen, A.

    [S.l.] : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The effect of viscosity on the stability of a non-neutral plasma is studied. Stability boundaries are obtained for two-dimensional electrostatic perturbations of long wavelengths. It is shown that a configuration with a monotone decreasing number density profile can be unstable when the plasma has viscosity. © 1999 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  13. 13
    Veeresha, B. M. ; Bhattacharyya, S. N. ; Avinash, K.

    [S.l.] : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The stability of a perfectly conducting fluid layer flowing along a magnetic field, parallel to a finitely conducting thin wall is examined. Finite layer width and compressibility of the fluid are shown to significantly lower the flow velocity required for instability to set in. The effect of axial flow on the stability of a cylindrical pinch surrounded by a resistive wall is examined. Flow is shown to have a destabilizing effect. © 1999 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  14. 14
    Urquijo, G. ; Bhattacharyya, S. N. ; Sen, A.

    [S.l.] : American Institute of Physics (AIP)
    Published 1997
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The stability of tearing modes in the presence of a rigid toroidal rotation of the plasma is examined. The effect of rotation is modeled by a centrifugal force, which in the cylindrical limit reduces to a uniform force transverse to the plasma column. The influence of this centrifugal force on the outer region matching data Δ, which provides a measure of the energy available for driving the tearing mode, is numerically investigated. It is found that the stability properties of the mode in the presence of the flow are sensitive to the equilibrium density profile. © 1997 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  15. 15
    Bhattacharyya, S. N.

    [S.l.] : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The equation governing the stability of a single species non-neutral plasma column to small amplitude electrostatic perturbations is shown to remain unchanged under a certain transformation. This transformation can be used to predict the stability of the fast rotational equilibrium using the results for the slow rotational equilibrium. For the fast rotational equilibrium the zero frequency modes, which can give rise to field error driven transport, are identified. © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  16. 16
    Bhattacharyya, S. N. ; Bhattacharjee, A.

    [S.l.] : American Institute of Physics (AIP)
    Published 1997
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The flow resonance is concealed when the linearized equation of motion in magnetohydrodynamics is written in terms of the Lagrangian displacement vector. Its contribution to the dispersion equation of a rotating cylindrical plasma column, surrounded by a thin resistive wall, is clarified by a simple model calculation, relevant for axisymmetric modes, in the Eulerian representation. Under certain assumptions the flow resonance is shown to damp the resistive wall mode, with the damping proportional to the square of the gradient of vorticity at the resonant surface. It is shown that a flow resonance can stabilize a slightly elliptical plasma, surrounded by a thin resistive wall, against axisymmetric modes. © 1997 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  17. 17
    Bhattacharyya, S. N.

    [S.l.] : American Institute of Physics (AIP)
    Published 1994
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The effect of a resistive wall on the stability of a magnetohydrodynamic equilibrium with flow is examined. Gyroscopically stabilized negative energy modes are shown to become unstable in the presence of a resistive wall. An estimate for the growth rate is obtained. The effect of this destabilization on the limits on the safety factor and the plasma beta for a rigidly rotating plasma column are studied.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  18. 18
    Bhattacharyya, S. N.

    [S.l.] : American Institute of Physics (AIP)
    Published 1995
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The system of equations governing the axisymmetric toroidal equilibrium of a non-neutral plasma is shown to become hyperbolic when the poloidal velocity of the plasma exceeds a sound speed. © 1995 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  19. 19
    Goswami, Priyanka ; Bhattacharyya, S. N. ; Sen, A.

    [S.l.] : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    A finite difference method is developed and used to compute the diocotron spectrum (discrete plus continuum) of a non-neutral plasma column with an arbitrary profile of the number density. For step function density profiles the results agree with the analytical dispersion relation. In contrast to earlier results, it is found that for a continuously varying hollow density profile the mode with azimuthal mode number l=2 has a growth rate comparable to that for a step function hollow density profile. The results obtained have been verified using an alternative numerical method in which the density is assumed to be constant over small intervals in the radius. © 1999 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  20. 20
    Bhattacharyya, S. N.

    [S.l.] : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1089-7674
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    In a toroidally confined non-neutral plasma, in certain parameter regimes it is shown that a fast rotational equilibrium can exist in addition to the slow rotational equilibrium. For a low density plasma, the fast rotational equilibrium is shown to have a much larger inward shift of the streamlines of flow compared to the slow rotational equilibrium. © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses