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Browsing by Author "Merlitz, H"

Browsing by Author "Merlitz, H"

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  • Core effects on ionization potentials in thallium 
    Merlitz, H; Gopakumar, G; Chaudhuri, R. K; Das, B. P; Mahapatra, U. S; Mukherjee, D (The American Physical Society, 2001-02)
    Ionization potentials (IP's) are evaluated for various excited states of Tl using the relativistic coupled cluster (CCCD) theory in the even-parity pair channel approximation (CCSD-EPC). An average accuracy below half 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 ...
  • 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. ...
  • 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 ...
  • 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 ...
  • Relativistic coupled cluster calculations of the energies for rubidium and cesium atoms 
    Chaudhuri, R. K; Sahoo, B. K; Das, B. P; Merlitz, H; Mahapatra, U. S; Mukherjee, D (American Institute of Physics, 2003-11)
    Ionization potentials and excitation energies of rubidium and cesium atoms are computed using the relativistic coupled cluster (CC) method. The effect of electron correlations on the ground and excited state properties is ...
  • Relativistic coupled cluster calculations using hybrid basis functions 
    Majumder, S; Gopakumar, G; Merlitz, H; Das, B. P (Institute of Physics, 2001-12)
    In this paper we present a new method of generating a relativistic basis set for atomic Dirac-Fock (DF) orbitals. Here, all the occupied and a few low-lying unoccupied DF orbital wavefunctions of atoms obtained from the ...
  • Theoretical studies of electric quadrupole transition probabilities in Mg II 
    Majumder, S; Gopakumar, G; Chaudhuri, R. K; Das, B. P; Merlitz, H; Mahapatra, U. S; Mukherjee, D (Springer-Verlag, 2004-01)
    The relativistic coupled cluster theory is employed to calculate electric quadrupole (E2) transition probabilities among the doublet states of Mg II which are of interest in astrophysical problems. This is the first time ...

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