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Browsing by Author "Majumder, S"

Browsing by Author "Majumder, S"

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  • Photometry of Solar Corona to Study the Coronal Structures 
    Chakraborty, P; Sankarasubramanian, K; Majumder, S; Rajesh Nayak, K; Sridharan, R; Jana, A. D; Rajalakshmi, G; Suresh, D; Asgekar, A; Geetha, K. P; Rajesh, C. K (Indian Institute of Astrophysics, Bangalore, 1997)
    White light images of the solar corona were taken on KODAK 2415 films using 3-inch (f/11.5) telescopes fitted with SLR cameras. Observations were made from 4 different sites spread over the totality belt by four different ...
  • 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 ...
  • Relativistic calculations of the lifetimes and hyperfine structure constants in 67Zn+ 
    Dixit, G; Nataraj, H. S; Sahoo, B. K; Chaudhuri, R. K; Majumder, S (Institute of Physics, 2008-01)
    This work presents accurate ab initio determination of the magnetic dipole (M1) and electric quadrupole (E2) hyperfine structure constants for the ground and a few low-lying excited states in 67Zn+, which is one of the ...
  • 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 ...
  • Relativistic magnetic quadrupole transitions in Be-like ions 
    Majumder, S; Das, B. P (The American Physical Society, 2000-10)
    The multiconfiguration Dirac-Fock method, based on the extended optimal level approximation, is used to calculate magnetic quadrupole transitions (M2) from 2s2p(3/SupP/Sub2) to 2s/Sup2(1/SupS/Sub0) states in berylliumlike ...
  • Relativistic {it Ab initio} calculations of forbidden transition probabilities and lifetimes of low-lying states in Ti IV 
    Subhasish, M; Dixit, G; Sahoo, B. K; Chaudhuri, R. K; Majumder, S (Institute of Physics, 2007-08)
    The astrophysically important electric quadrupole (E2) and magnetic dipole (M1) transitions for the low-lying states of triply ionized titanium (Ti IV) are calculated very accurately using a state-of-art all-order many-body ...
  • Theoretical spectroscopic studies of the atomic transitions and lifetimes of low-lying states in Ti IV 
    Mandal, S; Dixit, G; Sahoo, B. K; Chaudhuri, R. K; Majumder, S (Institute of Physics, 2008-03)
    The astrophysically important electric quadrupole (E2) and magnetic dipole (M1) transitions for the low-lying states of triply ionized titanium (Ti IV) are calculated very accurately using a state-of-the-art all-order ...
  • 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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