Astrophysical molecules of AlH and CaH: RKR potential and dissociation energies |
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| Authors: | B Narasimhamurthy N Rajamanickam |
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| Institution: | (1) Department of Post-graduate Studies and Research in Physics, University of Mysore, 570006 Mysore |
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| Abstract: | The true potential energy curves for the electronic ground states of astrophysically important AlH and CaH molecules are constructed by the Rydberg-Klein-Rees method. Empirical potential functions, of three-parameters by Lippincott, of five-parameters by Hulburt and Hirsch-felder and, of electronegativity by Szöke and Baitz, are examined for the adequacy to represent the true curve. From the best-fitting function, the dissociation energiesD 0 0 of AlH and CaH molecules are estimated to be 2.99 ± 0.08 and 2.72 ± 0.06 eV respectively. The force constants indicate that these values are of correct magnitude. |
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| Keywords: | AlH and CaH molecules dissociation energies curve-fitting method |
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