At temperatures below 0.1 GK, the $^{19}\mathrm{F}(p,\ensuremath{\gamma})^{20}\mathrm{Ne}$ reaction is only breakout path out of CNO cycle. Experimental studies this are challenging from a technical perspective due to copious $\ensuremath{\gamma}$-ray background far stronger $^{19}\mathrm{F}(p,\ensuremath{\alpha})^{16}\mathrm{O}$ channel. Here, we present first inverse kinematics study reaction...

In dense stars the nuclear reaction rates are influenced by screening effects arising from both ions and electrons. In this paper we calculate the enhancement factors due to electron polarization in the high-density, degenerate and relativistic regime, for non-resonant nuclear reaction rates. In an earlier analysis, Sahrling had proposed the possibility that the polarized electrons would lower ...

A new thermonuclear $^{17}$O($n$,$\gamma$)$^{18}$O rate is derived based on a complete calculation of the direct-capture (DC) and resonant-capture contributions, for temperature region up to 2 GK astrophysical interest. We have firstly calculated DC subthreshold contributions in energy 1 MeV, estimated associated uncertainties by Monte-Carlo approach. It shows that present remarkably larger tha...

Large-scale, three-dimensional numerical simulations of the deflagration stage of a thermonuclear supernova explosion show the formation and evolution of a highly convoluted turbulent flame in the gravitational field of an expanding carbon-oxygen white dwarf. The flame dynamics are dominated by the gravity-induced Rayleigh-Taylor instability that controls the burning rate. The thermonuclear def...

The outlook for controlled nuclear fusion has become much more complex than it appeared to be at least to the general public when the possibility of taming thermonuclear reactions for the production of useful power was optimistically mentioned at the 1955 Geneva conference on the peaceful uses of atomic energy. Indeed, it may now be impossible to r e capture the widespread excitement that follo...

Thermonuclear (type Ia) supernovae are explosions in accreting white dwarfs, but the exact scenario leading to these explosions is still unclear. An important step to clarify this point is to understand the behaviour of accreting white dwarfs in close binary systems. The characteristics of the white dwarf (mass, chemical composition, luminosity), the accreted material (chemical composition) and...

It has recently been argued that there are no dynamic screening corrections to Salpeter’s enhancement factor in thermonuclear reactions, in the weak-screening limit. The arguments used were: 1) The Gibbs probability distribution is factorable into two parts, one of which, exp(−β∑ eiej/rij) (β = 1/kBT ), is independent of velocity space; and 2) The enhancement factor is w = 1 + βeZ1Z2〈φ〉 with 〈φ...