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Browsing by Author "Sahoo, B. K"

Browsing by Author "Sahoo, B. K"

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  • Correlation Trends in the Ground-State Static Electric Dipole Polarizabilities of Closed-Shell Atoms and Ions 
    Singh, Y; Sahoo, B. K; Das, B. P (American Physical Society, 2013-12-03)
    We employ the closed-shell perturbed relativistic coupled-cluster (RCC) theory developed by us earlier [Phys. Rev. A 77, 062516 (2008)] to evaluate the ground-state static electric dipole polarizabilities (αs) of several ...
  • Correlation trends in the hyperfine structures of 210, 212Fr 
    Sahoo, B. K; Nandy, D. K; Das, B. P; Sakemi, Y (The American Physical Society, 2015-04)
    We demonstrate the importance of electron correlation effects in the hyperfine structure constants of many low-lying states in 210Fr and 212Fr. This is achieved by calculating the magnetic dipole and electric quadrupole ...
  • 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 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 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 ...
  • 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 ...
  • An overview of some experimental and theoretical aspects of fundamental symmetry violations in atoms 
    Budker, D; Sahoo, B. K; Angom, D; Das, B. P (Indian Academy of Sciences, 2010-12)
    We present some of the advances in our experimental and theoretical studies of violations in fundamental symmetries in atoms. A part of this work was performed under the auspices of a NSF{DST project. During this period, ...
  • Parity nonconservation in ytterbium ion 
    Sahoo, B. K; Das, B. P (American Physical Society, 2011-07)
    We consider parity nonconservation (PNC) in singly ionized ytterbium (Yb+) arising from the neutral current weak interaction. We calculate the PNC electric dipole transition amplitude (E1PNC) and the properties associated ...
  • Phase-separated charge-density-wave phase in the two-species extended Bose-Hubbard model 
    Mishra, T; Sahoo, B. K; Pai, R. V (The American Physical Society, 2008-07)
    We study the quantum phase transitions in a two component Bose mixture in a one-dimensional optical lattice. The calculations have been performed in the framework of the extended Bose-Hubbard model using the finite size ...
  • Reappraisal of the Electric Dipole Moment Enhancement Factor for Thallium 
    Nataraj, H. S; Sahoo, B. K; Das, B. P; Mukherjee, D (American Physical Society, 2011-05-20)
    The electric dipole moment (EDM) enhancement factor of atomic Tl is of considerable interest as it has been used in determining the most accurate limit on the electron EDM to date. However, its value varies from -179 to ...
  • Relativistic ab initio spectroscopy study of forbidden lines of singly ionized zinc 
    Dixit, G; Sahoo, B. K; Chaudhuri, R. K; Majumdar, S (Institute of Physics, 2009-08-28)
    The ab initio calculation has been carried out to study the astrophysically important forbidden electromagnetic transition rates of singly ionized zinc (Zn II). Electron correlations are considered to all orders using ...
  • Relativistic ab initio study of forbidden transitions of singly ionized Zinc using CCSD(T) 
    Dixit, G; Sahoo, B. K; Chaudhuri, R. K; Majumder, S (2007-08)
    In this work, the {\it ab initio} calculations have been carried out to study the oscillator strengths corresponding to `forbidden transitions' of astrophysically important electromagnetic transitions of singly ionized ...

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