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Rizal Kurniadi
Department of Physics, Institut Teknologi Bandung, Jl. Ganesa 10 Bandung, 40132 Indonesia
Astronomy Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering

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Alpha-cluster Model for 6Li, 8Be and 12C Nuclei within the Framework of the Generator Coordinate Approach Rizal Kurniadi; Marsongkohadi Marsongkohadi; Zaki Su’ud; Triyanta Triyanta
Indonesian Journal of Physics Vol 16 No 3 (2005): Vol. 16 No. 3, July 2005
Publisher : Institut Teknologi Bandung

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Abstract

The ground and excited states of 6Li, 8Be and 12C nuclei are investigated using the generator- coordinate method (GCM) involving (αd), (αα) and (3α) – clusters structures, respectively. It is assumed that the α and d particles are not structureless point particles, rather are represented by a certain four-nucleon and two-nucleon wave functions, respectively, so that the generating function depends on the possible nucleon configurations. The nucleonic wave functions are defined through the harmonic oscillator shell model (HOSM), whereas the nucleon-nucleon interaction is represented by a Gaussian-shape potential. The GCM kernels are projected out on nonorthonormal functions, instead of performing the standard Gram-Schmidt orthonormalization procedure. The total wave function is expanded in terms of these functions to obtain standard eigenvalue equation in nonorthonormal basis. Calculated spectroscopic properties are presented to be in excellent agreement with the experimental values and better than other calculation methods, such as the variational Monte Carlo (VMC), and the Green’s function Monte Carlo (GFMC).
Co-Authors Marsongkohadi Marsongkohadi Triyanta Triyanta Zaki Suud