Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 42, Issue 17, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/42/17/175006
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- National Science Council of Taiwan, Republic of China
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We have made an investigation on the ground states and the 2s(2) S-1(e) resonance states of H- in dense quantum plasmas. Exponential-cosine-screened Coulomb potentials (ECSCP) are used to represent the effective potential for a test charge in dense quantum plasmas. Ground-state energies and wavefunctions are determined within the framework of Ritz's variational principle by employing highly correlated wavefunctions to take into account the correlation effect of the charged particles. Ground-state energies are shown to converge with the increase of terms in the wavefunctions. We also report various expectation values of the coordinates of electrons in H-. Resonance energies and widths for the doubly excited H- for various values of the screening parameter are determined using the stabilization method by calculating the density of the resonance states. Results for resonance energies and widths are reported for the screening parameter in the range 0.0-0.15. Such a calculation for H- is reported for the first time in the literature.
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