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Browsing by Author "Mukherjee, D"

Browsing by Author "Mukherjee, D"

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  • A coupled-cluster approach to polarizabilities: Computational aspects 
    Sahoo, B. K; Das, B. P; Chaudhuri, R. K; Mukherjee, D (IOS Press, 2007)
    We present ab initio calculations of both the dipole and quadrupole polarizabilities within the framework of the relativistic coupled-cluster theory. We directly solve the first order perturbed equation arising from a ...
  • Electric dipole and quadrupole transition amplitudes for Ba+ using the relativistic coupled-cluster method 
    Gopakumar, G; Merlitz, H; Chaudhuri, R. K; Das, B. P; Mahapatra, U. S; Mukherjee, D (The American Physical Society, 2002-09)
    We present our calculations of the electric dipole and quadrupole matrix elements for transitions between low-lying bound states of Ba1 that are relevant for parity nonconservation studies using the relativistic coupled-cluster ...
  • Electric dipole transition amplitudes for 207 Pb+ 
    Sahoo, B. K; Majumder, S; Merlitz, H; Chaudhuri, R. K; Das, B. P; Mukherjee, D (Institute of Physics, 2006-01)
    Electric dipole transition amplitudes of certain low-lying states of Pb+ have been calculated using the relativistic coupled-cluster theory and compared with previous calculations. The role of electron correlation is found ...
  • Electric quadrupole moment of the 5d/sup2/ D/sub3∕2/ state in /sup171/Yb/sup+/: A relativistic coupled-cluster analysis 
    Latha, K. V. P; Sur, C; Chaudhuri, R. K; Das, B. P; Mukherjee, D (The American Physical Society, 2007-12)
    The electric quadrupole moment for the 5d 2D3/2 state of 171Yb+, has been calculated using the relativistic coupled-cluster method. Earlier a similar calculation was performed for the 4d 2D5/2 state of 88Sr+ which is the ...
  • Electric Quadrupole Moments of the D States of Alkaline-Earth-Metal Ions 
    Sur, C; Latha, K. V. P; Sahoo, B. K; Chaudhuri, R. K; Das, B. P; Mukherjee, D (The American Physical Society, 2006-05)
    The electric quadrupole moment for the 4dD5/22 state of Sr+88; one of the most important candidates for an optical clock, has been calculated using the relativistic coupled-cluster theory. This is the first application of ...
  • Electron correlation effects in hyperfine interactions in 45/SupSc and 89/SupY 
    Sahoo, B. K; Beier, T; Das, B. P; Chaudhuri, R. K; Mukherjee, D (Institute of Physics, 2005-12)
    Relativistic coupled-cluster theory has been employed to calculate the magnetic dipole and electric quadrupole hyperfine structure constants for the stable isotopes 45/supSc and 89/supY. The results are in good agreement ...
  • The electron electric dipole moment enhancement factors of Rubidium and Cesium atoms 
    Nataraj, H. S; Sahoo, B. K; Das, B. P; Chaudhuri, R. K; Mukherjee, D (2007-07-27)
    The enhancement factors of the electric dipole moment (EDM) of the ground states of two paramagnetic atoms; rubidium (Rb) and caesium (Cs) which are sensitive to the electron EDM are computed using the relativistic ...
  • Enhanced role of electron correlation in the hyperfine interactions in D5/22 states in alkaline-earth-metal ions 
    Sahoo, B. K; Sur, C; Beier, T; Das, B. P; Chaudhuri, R. K; Mukherjee, D (The American Physical Society, 2007-04)
    The low-lying n(=3,4,5)d 2D5/2 states of alkaline-earth-metal ions are of vital importance in a number of different physical applications. The hyperfine structure constants of these states are characterized by unusually ...
  • Influence of correlation effects on the magnetic dipole hyperfine interaction in the low-lying states of Ca+ 
    Sahoo, B. K; Chaudhuri, R. K; Das, B. P; Majumder, S; Merlitz, H; Mahapatra, U. S; Mukherjee, D (Institute of Physics Publishing Ltd., 2003-05-28)
    The relativistic coupled cluster theory is employed to calculate the hyperfine structure of the 2S 1/2, 2P 1/2, 2P 3/2, 2D 3/2 and 2D 5/2 states of singly ionized calcium. The importance of correlation effects is highlighted. ...
  • Intrinsic Electric Dipole Moments of Paramagnetic Atoms: Rubidium and Cesium 
    Nataraj, H. S; Sahoo, B. K; Das, B. P; Mukherjee, D (The American Physical Society., 2008-07)
    The electric dipole moment (EDM) of paramagnetic atoms is sensitive to the intrinsic EDM contribution from that of its constituent electrons and a scalar--pseudo-scalar (S-PS) electron-nucleus interactions. The electron ...
  • Investigations of Ra+ properties to test possibilities for new optical-frequency standards 
    Sahoo, B. K; Das, B. P; Chaudhuri, R. K; Mukherjee, D; Timmermans, R. G. E; Jungmann, K (The American Physical Society, 2007-10)
    The present work tests the suitability of the narrow transitions 7s 2S1/2-->6d 2D3/2 and 7s 2S1/2-->6d 2D5/2 in Ra+ for optical frequency standard studies. Our calculations of the lifetimes of the metastable 6d states ...
  • Ionization potential and excitation energy calculations for Ba+ using the relativistic coupled-cluster method 
    Gopakumar, G; Merlitz, H; Majumder, S; Chaudhuri, R. K; Das, B. P; Mahapatra, U. S; Mukherjee, D (The American Physical Society, 2001-09)
    We report the results of our relativistic coupled cluster singles, doubles, and partial triples calculations of the ionization potentials (IP) and excitation energies (EE) for different low-lying levels of Ba+. The accuracies ...
  • Ionization potentials of beryllium-like ions from the relativistic coupled-cluster-based linear response theory 
    Chaudhuri, R. K; Panda, P. K; Merlitz, H; Das, B. P; Mahapatra, U. S; Mukherjee, D (Institute of Physics, 2000-11)
    We first test our recently developed relativistic coupled-cluster-based linear response theory (RCCLRT) by computing the principal and the shake-up ionization potentials (IP) of highly stripped atoms. Comparison is made ...
  • Lifetimes of the metastable D3/2, 5/22 states in Ca+ , Sr+ , and Ba+ 
    Sahoo, B. K; Md. Islam, R; Das, B. P; Chaudhuri, R. K; Mukherjee, D (The American Physical Society, 2006-12)
    Atomic properties involving the low-lying excited D3/2,5/22 states in alkaline-earth-metal ions are of current interest in many different applications ranging from tests of physics beyond the standard model to astrophysics. ...
  • Magnetic dipole hyperfine interactions in 137Ba+ and the accuracies of the neutral weak interaction matrix elements 
    Sahoo, B. K; Gopakumar, G; Chaudhuri, R. K; Das, B. P; Merlitz, H; Mahapatra, U. S; Mukherjee, D (The American Physical Society, 2003-10)
    The relativistic coupled-cluster method is applied to calculate the magnetic dipole hyperfine constant “A” of the 6s1/2, 6p1/2, 6p3/2, and 5d3/2 states of singly ionized barium. After the inclusion of two-body correlation ...
  • Many-body effects in hyperfine interactions in 205Pb+ 
    Sonjoy, M; Sahoo, B. K; Chaudhuri, R. K; Das, B. P; Mukherjee, D (EDP Sciences, 2007-03)
    Ab initio calculations have been carried out to study the magnetic dipole and electric quadrupole hyperfine structure constants of 205Pb+. Many-body effects have been considered to all orders using the relativistic ...
  • Neutron star physics in the square kilometre array era: an Indian perspective 
    Konar, S; Bagchi, Manjari; Bandyopadhyay, Debades; Banik, Sarmistha; Bhattacharya, D; Bhattacharyya, S; Gangadhara, R. T; Gopakumar, A; Gupta, Y; Joshi, B. C; Maan, Yogesh; Maitra, Chandreyee; Mukherjee, D; Pai, Archana; Paul, B; Ray, A; Sutaria, F. K (Indian Academy of Sciences, 2016-12)
    It is an exceptionally opportune time for astrophysics when a number of next-generation mega-instruments are poised to observe the Universe across the entire electromagnetic spectrum with unprecedented data quality. The ...
  • A new formulation of the relativistic many-body theory of electric dipole moments of closed shell atoms 
    Latha, K. V. P; Angom, D; Chaudhuri, R. K; Das, B. P; Mukherjee, D (Institute of Physics, 2007-09)
    The electric dipole moments of closed-shell atoms are sensitive to the parity and time-reversal violating phenomena in the nucleus. The nuclear Schiff moment is one such property, it arises from the parity and time reversal ...
  • Optical frequency standard with Sr+: a theoretical many-body approach 
    Sur, S; Latha, K. V. P; Chaudhuri, R. K; Das, B. P; Mukherjee, D (World Scientific Publishing Co, 2007)
    Demands from several areas of science and technology have lead to a worldwide search for accurate optical clocks with an uncertainty of 1 part in $10^{18}$, which is $10^{3}$ times more accurate than the present day cesium ...
  • Probing CP violation with the electric dipole moment of atomic mercury 
    Latha, K. V. P; Angom, D; Das, B. P; Mukherjee, D (The American Physical Society, 2009-08-21)
    The electric dipole moment of atomic Hg-199 induced by the nuclear Schiff moment and the tensor-pseudotensor electron-nucleus interactions are calculated. For this, we develop and employ a novel method based on the ...

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