Physics 12c Notes
نویسنده
چکیده
6 Thursday, April 15, 2010 15 6.1 Theory of Phonons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 6.1.1 Low-Temperature Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 6.1.2 High-Temperature Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 6.2 Chemical Potential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
منابع مشابه
Evaluation of dose distribution of 12C ion beam in radiotherapy by FLUKA as a Monte Carlo simulation Code
Introduction: Nowadays, the use of heavy ion beams in cancer therapy have been developed worldwide. Materials and Methods: It requires accurate understanding of the complex processes of ion interaction with matter, as it is the calculation the relative dose & range of these ions in matter. In the present study we used FLUKA as a numerical Monte Carlo simula...
متن کاملRole of the Hoyle state in the 12C+12C fusion at low energies
The 12C+12C fusion reaction is investigated in a multichannel folding model, using the density-dependent DDM3Y nucleon-nucleon interaction. The C(01 , 2 , 0+2 , 3 −) states are included, and their densities are taken from a microscopic cluster calculation. Absorption to fusion channels is simulated by a short-range imaginary potential and the model does not contain any fitting parameter. We com...
متن کاملRecent measurements of the 12 C + 12 C fusion cross section near the Gamow energy by γ - ray spectroscopy
Recently, the fusion cross sections of the reactions 12C(12C,α)20Ne and 12C(12C,p)23Na have been measured by γ-ray spectroscopy at energies as low as 2.10 MeV in the center of mass [10]. These measurements employed targets of ultra-low hydrogen contamination to suppress background which had hindered previous studies of the reactions. In this report the results are discussed relative to several ...
متن کاملCoupling and higher - order effects in the 12 C ( d , p ) 13 C and 13 C ( p , d ) 12 C reactions
Coupled-channel calculations are performed for the 12C(d,p)13C and 13C(p,d)12C reactions between 7 and 60 MeV to study the effect of inelastic couplings in transfer reactions. The effect of treating transfer beyond Born approximation is also addressed. The coupling to the 12C 2+ state is found to change the peak cross section by up to 15%. Effects beyond Born approximation lead to a significant...
متن کاملFusion Rate and Superburst Ignition
Observationally inferred superburst ignition depths are shallower than models predict. We address this discrepancy by reexamining the superburst trigger mechanism. We first explore the hypothesis of Kuulkers et al. that exothermic electron captures trigger superbursts. We find that all electron capture reactions are thermally stable in accreting neutron star oceans and thus are not a viable tri...
متن کامل