Low energy cross sections for 11B(p, 3α)

Effects of electron screening on low-energy fusion cross sections

“…The measured S(E) factor for the liB(p, 3e) reaction [5,6] shows an increase at energies E <40 keV (Fig. 3b), which is in agreement with our predicted enhancements ( Table 2 and dotted curve in Fig.…”

The effects of electron screening and resonances in (p, ?) reactions on10B and11B at thermal energies

“…Recent lowenergy studies of the reactions 3He(d,p)4He [4] and 6Li(p,~)3He, 6Li(d,e)gHe, and 7Li(p,~)4He [5] have shown clearly such screening effects, as well as their dependence on the aggregate state of the target. It was also [14][15] are shown in form of the astrophysical S(E) factor. The UB (p, e) 8Be data near the top of the E R = 148 keV resonance have been omitted, and the absolute cross sections reported by Davidson et al [14] have been increased by a factor 3/2 (see [ 15]).…”

“…It was also [14][15] are shown in form of the astrophysical S(E) factor. The UB (p, e) 8Be data near the top of the E R = 148 keV resonance have been omitted, and the absolute cross sections reported by Davidson et al [14] have been increased by a factor 3/2 (see [ 15]). Further, the thick target yields reported by Roughton et al [12] have been converted to thin target yields by subtracting yields from adjacent energies; the resulting yields together with stopping power data [ 19] provided then the absolute cross sections (or S(E) factors) for '~ (p, cQ 7Be as shown in a (see also Sect.…”

“…The published total cross sections for the l~ [9][10][11][12][13] and 11B(.p,~)SBe [14,15] reactions are shown in Fig. 1 in form of the S (E) factor (here: 2nn(mB+p)=149.7E -d2 and 2rift(liB+p) = 150.3 E -1/2).…”

Astrophysical reaction rates forB10(p,α)7Rauscher1, Raimann2 1996Phys. Rev. C321250View full textAdd to dashboardCite

“…The reaction 11 B(p,α) 8 Be has been measured below 1 MeV [16], [17], and most recently [14]. It should be noted that the effect of electron screening [14] increases the very low energy cross sections considerably and thus has a major impact on a reaction's significance as a terrestrial fusion fuel.…”